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| | | | | | | | | | | | | ELECTRC9 | | Copyright 1992, by Robert J. La Capra | All Rights Reserved | | Shareware Version 9.2 | | | | | | | | | | USER'S MANUAL | | | | | | | | | | Robert J. La Capra | 50 Hillside Terrace | Andover, NJ 07821 | | | | | | | | | | | | | | TABLE OF CONTENTS Introduction .............................................. I Shareware ................................................ II Benefits Of Registration ................................. II How To Register .......................................... II Functions Supported By Registered User Version .......... III Product Support Policy ................................... VI ELECTRC9 Registration Form .............................. VII Disclaimer ............................................. VIII Files Included On ELECTRC9 Disk ........................ VIII SETTING UP ELECTRC9 Making A Backup Copy Of The ELECTRC9 Disk ........... IX Setting Up ELECTRC9 On A Floppy Disk ................ IX Setting Up ELECTRC9 On A Hard Drive ................. IX RUNNING ELECTRC9 From A Floppy Disk ................................... 1 From A Hard Drive .................................... 1 Menu Selection ....................................... 1 Data Input ........................................... 1 Selecting Conductors ................................. 2 Setup Color Defaults ................................. 2 BOX FILL & SIZING CALCULATIONS Device Box Fill & Sizing ............................. 2 Junction, Pull Box Sizing - Straight Pull ............ 4 Junction, Pull Box Sizing - Angle or U Pull .......... 4 CONDUIT SELECTOR .......................................... 5 GENERAL CALCS: Cost To Operate ...................................... 6 Motor Amps When Hp, Pf, And Efficiency Are Known ..... 6 Motor Hp When Volts, Amps, Pf And Efficiency Are Known 7 Amps When Va And Pf Are Known ........................ 7 Va When Volts, Amps, And Pf Are Known ................ 7 LIGHTING CALCULATIONS (Zonal Cavity Method) ............... 8 MOTOR CALCULATIONS Branch Conductor Sizing ............................. 11 Fuse or Breaker Sizing .............................. 11 Overload Protection Sizing .......................... 12 PIPE & WIRE SELECTOR ..................................... 13 POWER FACTOR CORRECTION .................................. 14 PRINTING REPORTS ......................................... 16 QUICK REFERENCE TABLES Equipment Grounding Conductors ...................... 16 Grounding Electrode Conductors ...................... 16 Killowatt - Ampere Tables ........................... 17 Underground Cover Requirements ...................... 17 Metal Device Boxes .................................. 17 Standard Pull & Junction Boxes ...................... 17 Standard Fuses & Breakers ........................... 17 Transformer Kva - Amperes ........................... 17 Terminal/Conductor Temperature Limitations .......... 17 Conductor Ampacity .................................. 18 SHORT CIRCUIT CALCS ...................................... 18 TERMINAL/CONDUCTOR TEMPERATURE LIMITATIONS ............... 22 VOLTAGE DROP CALCULATOR .................................. 23 OTHER ELECTRICAL SOFTWARE AVAILABLE LOADCALC Service/Feeder Calcs Version 1.1 ........... 24 NOTE !! Pages 1 thru 23 of this file includes all documentation text from the Registered User Version of ELECTRC9. However, not all referenced features are available in this Shareware Version of the program. The full text is included here to give you a better idea of what the Registered User Version supports. __________________________ Page I _________________________ INTRODUCTION This Shareware evaluation Version Of ELECTRC9 is designed to perform most common electrical contracting and engineering calculations : * Device, junction and pull box calcs. * Conduit fill calculations. * Cost to operate various loads at different kwh charges. * Lighting calculations based on the Zonal Cavity Method. * Motor conductor, overcurrent and overload calculations. * Wire and conduit sizing based on allowable voltage drop. * General Calculations: Amps when hp, pf, and efficiency are known Amps when va and pf are known Va when volts, amps, and pf are known Hp when volts, amps, pf and efficiency are known * Quick Reference Tables for: Grounding electrode & equipment ground conductor sizes Underground cover requirements KW to ampere tables Transformer Kva to ampere tables Device, pull & junction box size and capacity Standard fuse & breaker ratings Wire ampacity table New terminal temp rating requirements - NEC 110-14(c) * Voltage drop calcs. * Power factor correction. * All functions operate with 'what-if' capability. You can quickly and easily change only the data you wish to, without having to start a new calculation and re-enter all the required data. Results are calculated and displayed as you make each change. ** All functions conform to the 1993 National Electrical Code. The National Electrical Code is a copyrighted document of the National Fire Protection Association, Batterymarch Park, Quincy, MA. 02269. __________________________ Page II ________________________ SHAREWARE ELECTRC9 is copyrighted (c) 1992, By Robert J. La Capra. ELECTRC9 is not free software. This shareware version is made publicly available only to allow users to preview ELECTRC9 on a trial basis. Any use of this shareware version beyond this limited evaluation period requires registration with the author, as described below. Use of unregistered copies past the evaluation period is prohibited. BENEFITS OF REGISTRATION Registration of ELECTRC9 brings you the following benefits: You receive the latest, expanded 'Registered User' version of ELECTRC9, which supports functions and capabilities in addition to those supported in this shareware version. The Registered User Version will not have the opening or closing shareware screens. You support the 'Shareware' concept of marketing which allows you to try the software before making a purchase. You receive unlimited priority support by US Mail, CompuServe Mail, and optional fax support. You receive automatic notification of future upgrades and new programs as soon as they become available. These are also offered to you at substantial discounts. Read the 'Product Support Policy' in this file for the major benefits of becoming a Registered User, and the 'Functions Supported By Registered User Version', in this file. HOW TO REGISTER A single registration of ELECTRC9 may be used by only one user at a time - it may not be installed on a server, network, etc..., nor may it be copied for use on multiple machines at one time, or be potentially available for use by more than one person at a time. A Single User Licensing Agreement will be supplied for each user that you register. To encourage ethical use of ELECTRC9, discounts are available for multiple registrations. Available licensing agreements range from six or more users to unlimited site licenses, in several increments. Write for current availability & fees. To register, fill out completely and mail the ELECTRC9 Registration Form included in this file, or the one supplied in the disk file "ELECTRC9.REG", with the appropriate fee. _________________________ Page III ________________________ FUNCTIONS SUPPORTED BY THE REGISTERED USER VERSION Conduit Fill & Sizing Selects raceway size for any combination of insulated conductors. Calculates individual & total conductor areas, total area of raceway selected, and percent conduit fill. #18 thru 2000 kcmil copper & aluminum conductors. Types tw, thw, thwn, thhn, rhw, rhh, use, xhhw. Power Factor Determines existing PF based on measured line volts, line amperes and true power you supply. Calculates Kvars needed to raise existing PF to any new PF. Specifies phase angle, Kva & Kvar of existing and proposed PF. Specifies recovered distribution system losses at the proposed PF. Single phase and balanced three phase. Box Fill & Sizing Calculates minimum cubic inch capacity of device boxes based on intended conductor/device/fitting fill. Selects minimum box dimensions for straight and angle pull and junction boxes Pop-up quick reference tables for standard dimensions and cubic capacities of device, junction & pull boxes are viewable with a single keypress. Lighting Design Performs interior lighting design based on the Illuminating Engineering Society's Zonal Cavity Method. Calculates required fixture quantity for any desired footcandle level. Supports cavity ratios, surface reflectances, and maintenance factors. Built-in support for generic recessed incandescent, fluorescent and hid fixtures as well as many lamp types. Also allows you to specify any fixture/lamp combination with data you can obtain from the manufacturer of the fixture/lamp that you choose to specify. Pipe & Wire Sizing Selects conductor size for any load amperage and picks correct raceway size for those conductors. Supports 6 circuit types, including harmonic. 21 supported conductor material/insulation/temperature rating combinations. Derating for ambient temperature & for the number of current carrying conductors contained in the raceway. Terminal temperature limitations. You can also choose to specify a maximum voltage drop percentage which cannot be exceeded, and supply the circuit run length, and the correct conductor will be selected Supports single & three phase. _________________________ Page IV ________________________ Motor Calcs Selects motor branch circuit conductors. Selects overcurrent protective device ratings. Selects motor overload protection ratings. Supports squirrel cage & wound rotor motors. Supports full voltage, resistor, reactor & autotransformer starting methods. Supports 21 conductor material/insulation/temperature rating combinations. Supports all code letters. Ambient temperature derating. Terminal temperature limitations. Time delay & non time-delay fuses. Instantaneous trip & inverse time circuit breakers. 110-240 volt, .17-10 HP Single Phase. 208-480 volt, .5-200 HP Three Phase. Voltage Drop Calculates voltage drop on existing or proposed resistive circuits (100% PF) at any voltage, amperage and run length. Supports circuit conductors from #18 awg thru 2000 kcmil, aluminum & copper. Displays volts dropped, volts at load terminals and the percentage of voltage dropped. Single & three phase. Short Circuit Calculates available fault currents from the source to a maximum of 10 downstream points on the distribution system. Calculations include the effect of voltage drop, impedance and the inductive effects of the conductor/raceway system. Supports single & parallel conductor runs, #12 awg thru 1000 kcmil, copper & aluminum. Supports magnetic & non-magnetic raceways. Single & three phase. General Calcs Calculates the cost to operate any load for any number of hours per day for any number of days at any utility Kwh rate. Calculate motor amps when hp, pf, & efficiency are known. Calculates motor hp when volts, amps, pf & efficiency are known. Calculates amps when va, volts & pf are known. Calculates va when volts, amps & pf are known. _________________________ Page V _________________________ Quick Reference Built in reference table screens that can be accessed from the main menu, and from within certain functions for which they are in context. They can be viewed on screen and can be printed to printer or disk file. Conductor ampacities, temperature ratings & ambient correction factors as per NEC Table 310-16. Terminal temperature limitations as per NEC 110-14(c). Kw to amperes. Transformer Kva to amperes. Underground cover requirements as per NEC 300-5. Standard pull & junction box dimensions and cubic capacities. Standard metal device box dimensions and cubic capacities as per NEC 370-16(a). Grounding electrode sizing as per NEC 250-94. Equipment grounding conductor sizing as per NEC 250-95. Standard fuse & circuit breaker ratings. Three phase tables, where appropriate. Printed Reports Professional, detailed reports for all program functions. Send reports out to a printer, or to an ASCII disk file where you can then import the report into your word processor and fine tune the appearance before printing. You can input up to four lines of data which will print at the top of your report. Printer output is generic, will work on any printer connected to parallel port LPT1. What-If Data Input Quickly and easily see what effect a change of one data item will have on the result of the design you are working on. Once you have entered all required data within a function and the function has calculated the result, you can then change one data item at a time and the function will automatically recalculate the results instantly. Great for quick comparisons of alternate design specs. NEC Compliance ELECTRC9 has been written to produce design specifications that comply with the 1993 National Electrical Code. System Requirements To run ELECTRC9, you will need to have the following minimum hardware configuration: An IBM or compatible computer. Any brand or version of DOS 2.11 or greater. 390 K of free memory available. One floppy disk drive. Monochrome or color monitor. _________________________ Page VI _________________________ PRODUCT SUPPORT POLICY Your registration of ELECTRC9 software will entitle you to extended product support services and other features which are intended to provide you with continuous satisfaction. The Registered User version of ELECTRC9 that you receive upon registration will support many enhancements and capabilities that are not available in this Shareware version. If any program bugs are discovered which affect the intended functionality or accuracy of the program, a revised program will be sent to you, as a Registered User, free of charge. As a Registered User, you will automatically be notified of any upgrades and new programs as they become available. Upgrades will be made available to you at reduced fees. You, as a Registered User, will have unlimited free support via US Mail. No phone support is presently available. If you have access to the CompuServe Information Service, you, as a Registered User, will also have unlimited priority support via CompuServe Mail, by leaving me a Mail Message. Your message will generally be answered within 24 hours or less. No messages will be accepted or returned through any gateways of other electronic mail services, or in any case where postage is due. If you select the optional fax support subscription for ELECTRC9 when you register, you will have one year of unlimited fax support for ELECTRC9. The fax number will be included with your disk shipment. Your feedback is the most important planning and development tool available to me. I look forward to hearing your thoughts about the present capabilities of the software, your wish list for additions and modifications of future versions, and any additional ideas for making the software more useful to yourself and other users. _________________________ Page VII _________________________ ELECTRC9 Ver. 9.2 REGISTRATION FORM S1234 Registration fee for 1 to 5 users is $59.00 for each user or machine. Site License & Multiple discounts available for 6 or more users. Write for info. Purchase orders without payment attached cannot be accepted. US funds drawn from a US bank. INCLUDED WITH YOUR REGISTRATION Latest program version and documentation file. Documentation is supplied on disk file. No printed manuals. One License To Use Software for each user registered. Unlimited support by US Mail and by CompuServe Mail. No phone support available. Shipping via US Postal Service. Orders shipped same day registration received. OPTIONAL ITEMS * UPS Ground Delivery - $10.00 additional per order. Multiple registrations or registration of ELECTRC9 and LOADCALC together qualify as 1 order, and shipping is $10.00 total. Supply street address. NO P.O. BOXES. * 1 Year Of Fax Support for ELECTRC9 - $10.00 additional per year. For multiple registrations of ELECTRC9, fee is still $10.00 total. Fax # supplied with shipment. Return This Form And Registration Fee PAYABLE TO: ROBERT J. LA CAPRA 50 Hillside Terrace Andover, NJ 07821 S.S.# 137-44-7561 SHIP TO: Name: _______________________________________________________ Company: ____________________________________________________ Address: ____________________________________________________ City,State,Zip: _____________________________________________ Phone : ______-______-________ Fax : ______-______-_______ Number Of Users: ______ x $59.00 Each = Reg. Fee . : $_______ UPS Ground Shipping - $10.00 Per Order [Optional] : $_______ 1 Year Of ELECTRC9 Fax Support - $10.00 [Optional] : $_______ _____________________________________________________________ TOTAL FEE ENCLOSED .... : $_______ DISK SIZE PREFERRED: [ ] 5 1/4" [ ] 3 1/2" _________________________ Page VIII ______________________ DISCLAIMER OF WARRANTY THIS SOFTWARE AND DOCUMENT ARE OFFERED "AS IS" AND WITHOUT WARRANTIES AS TO PERFORMANCE OF MERCHANTABILITY OR ANY OTHER WARRANTIES WHETHER EXPRESSED OR IMPLIED. BECAUSE OF THE VARIOUS HARDWARE AND SOFTWARE ENVIRONMENTS INTO WHICH THIS PROGRAM MAY BE PUT, NO WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE IS OFFERED. GOOD DATA PROCESSING PROCEDURE DICTATES THAT ANY PROGRAM BE THOROUGHLY TESTED BEFORE RELYING ON IT. THE USER MUST ASSUME THE ENTIRE RISK OF USING THIS PROGRAM. THE AUTHOR OF THIS PROGRAM ASSUMES NO LIABILITY FOR YOUR USE OF THIS PROGRAM. DUE TO THE NATURE OF THIS PROGRAM, THE USER MUST BE FAMILIAR WITH THE SAFETY CONSIDERATIONS OF DESIGNING AND SAFELY INSTALLING ELECTRICAL WIRING SYSTEMS, IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE. THIS PROGRAM IS NOT INTENDED TO REPLACE THE NEED FOR A QUALIFIED PERSON WHO IS EXPERIENCED IN THE ELECTRICAL DESIGN, CONSTRUCTION AND MAINTENANCE OF SAID ELECTRICAL SYSTEMS IN THEIR ENTIRETY. FILES INCLUDED ON ELECTRC9 DISK Electrc9.Doc ... This documentation file Electrc9.Exe ... Electrc9 program file Electrc9.Reg ... ELECTRC9 Registration Form Descrip.Doc .... Shareware Version Description _________________________ Page IX ________________________ SETTING UP ELECTRC9 Making A Backup Copy Of The Electrc9 Disk The importance of making a backup copy of this program disk cannot be too strongly stressed ! Please STOP NOW and copy all the files included on the ELECTRC9 disk to a blank formatted disk, and place the original in a secure place. Setting Up ELECTRC9 On A Floppy Disk You can use the backup disk created above to run ELECTRC9. Setting Up ELECTRC9 On A Hard Drive 1. Create a subdirectory on the hard drive to hold all the ELECTRC9 files as follows: A. Log onto the root directory of the hard drive - If drive is C:, type "C:" then press ENTER. Then type "CD\" and press ENTER. (do not type the quotes). B. Type "MD ELECTRC9" then press ENTER (you can substitute any name for ELECTRC9 - do not type quotes). 2. Install the backup ELECTRC9 disk in floppy drive A: or B: 3. Log onto the floppy drive containing the backup disk - (type "A:" or "B:" then press ENTER (do not type quotes). 4. Type "COPY *.* C:\ELECTRC9" then press ENTER (don't type the quotes). The installation is complete. To verify the setup went OK, type "DIR C:\ELECTRC9\*.*" then press ENTER (no quotes). you should see a directory listing showing the names of all the files included on the ELECTRC9 disk. _________________________ Page 1 __________________________ RUNNING ELECTRC9 From Floppy Disk Insert the backup program disk into the disk drive and at the DOS prompt type "ELECTRC9" then press ENTER. From Hard Drive Enter the directory where the ELECTRC9 files are located, and at the DOS prompt type "ELECTRC9" then press ENTER. SHAREWARE VERSION ONLY - In the shareware version of ELECTRC9, you will first be asked to input a random number before you are given control of the main menu. Menu Selection The main menu is a pull down type, structured as a horizontal bar at the top of the screen with main titles displayed. Each of these main titles represents a sub menu with one or more related program functions. To select specific program functions : 1. Press the hilighted letter of the menu item (main or sub). OR, 2. Press the DOWN ARROW key to open the first sub menu, then use LEFT or RIGHT ARROW keys to move between sub menus. OR, 3. Position the hilighted block over a menu selection (main or sub), then press ENTER. Data Input All functions operate with 'What-If' data entry routines. This allows you to instantly see the results of changing one data item at a time. Data input routines are similar in all functions. Use the UP, DOWN, or ENTER keys to move between input fields, entering data as you go. Some fields limit your input to certain values, and if you input data that is unacceptable, you will hear a beep and will not be able to move from that field until the correct data has been entered (or leave the field empty). Some functions require that you select one data item from a list. This is done by pressing a function key which pops up a menu where you will select one item from a list of choices. Use the UP or DOWN ARROW keys to position the hilighted bar over your choice and press ENTER. _________________________ Page 2 __________________________ After you have entered all required data, the calculation will be performed and displayed. You can then change individual data items and instantly see the results. CAUTION: When entering the last data item, or changing one data item which was previously entered: Be sure to record that change by moving from that field to another field, or by pressing ENTER while still on that field. Selecting Conductors ELECTRC9 supports the new NEC 110-14(c) temperature limitation requirements. Now when you press the function key which pops up a list of available conductor types, there is also a temperature rating associated with each conductor and a location reference to help you choose. When you select a conductor from the list, you are also choosing which temperature rating that conductor will be 'USED AT' (which column of 310-16 will be searched for ampacity). When selecting a conductor, remember that the temperature rating of the terminal or equipment must not be exceeded. If the equipment is listed for use at 75 degrees C maximum, then you must choose a conductor from the list with a rating that doesn't exceed 75 degrees. Setup Color Defaults Initially the program starts up in black and white. Select 'Setup' from the main menu. Then select either Color Display or Mono Display. Your choice will be saved to a disk file, which will automatically be used for future program use. BOX FILL & SIZING Device Box Fill & Sizing Determines cubic inch volume required for boxes, as per 1993 NEC section 370-16. Conductor size range is from #18 thru #6. Free space (cu.in.) required for each conductor: ------------------------------------------------ # 18 .. 1.5 | # 12 .. 2.25 | # 6 .. 5 # 16 .. 1.75 | # 10 .. 2.5 | # 14 .. 2 | # 8 .. 3 | _________________________ Page 3 __________________________ Deductions are as follows: * 1 or more fixture studs, cable clamps, or hickeys: 1 deduction for each type of fitting, based on the largest conductor contained in the box. * Each Strap containing 1 or more devices: 2 deductions, based on the largest conductor connected to each device strap. * Grounding conductors: 1 deduction, based on largest grounding conductor in box. * Isolated Ground conductors: 1 deduction based on largest isolated ground conductor in box. Enter The Quantity Of Each Size Conductor Within The Box: A conductor running thru the box with no splices or connections within the box should be counted as 1 conductor. A conductor originating outside the box and terminating within the box should be counted as 1 conductor. Conductors, no part of which leaves the box (example ... a jumper or pigtail from a splice within the box to a switch, outlet or fixture mounted on the box), should not be counted. Answer the prompts for devices, clamps, fittings, ground conductors, add'l ground conductors: Count each mounting yoke or strap containing one or more devices as 1. Example... one duplex outlet - count as 1. two duplex outlets - count as 2. The remaining prompts are self explanatory. Answer Y for yes. There is no need to answer N for any prompts which would be answered as 'no'. A blank field is interpreted as 'no'. A quick reference table of standard metal boxes and their cubic inch capacity is available for viewing at any time, by pressing F2. The current screen will be saved, and the table will be shown. When you wish to return to the previous screen, press any key. A printout is available by pressing F10. See the documentation for printing for details. _________________________ Page 4 __________________________ Junction & Pull Box Sizing - Straight Pull Calculates the minimum length, in inches, of pull and junction boxes where raceways enter and leave the box at opposite ends. If the wiring method is cable assemblies instead of raceways, first determine the trade size conduit which would be appropriate for the size and quantity of conductors in the cable assembly, then use that conduit size. If more than one raceway or cable enters and/or leaves either end of the box, always use the largest size. The method used to determine minimum box length for straight pull: Eight times the trade diameter of the largest raceway. The operation of this function is straightforward. Position the hilighted bar over the largest raceway size for this calculation, then press ENTER. The results will be displayed. A printout is available by pressing F10. See the documentation for printing for details. Junction & Pull Box Sizing - Angle or U Pull Calculates the minimum distance, in inches, between each raceway entry inside a junction or pull box and the opposite wall of the box, where raceways enter and leave the box at angles. If the wiring method is cable assemblies, see the explanation above, under 'Straight Pull'. The method used to determine minimum distance for angle or U Pull: Six times the trade diameter of the largest raceway, PLUS, the sum of the diameters of all other raceway entries in any one row on the same wall of the box. Use the row with the largest total diameter of raceways. A quick reference table of standard boxes and their cubic inch capacity is available for viewing at any time, by pressing F2. When you wish to return to the previous screen, press any key. A printout is available by pressing F10. _________________________ Page 5 __________________________ CONDUIT SELECTOR The Conduit Selector allows you to quickly and accurately determine the conduit size required for 1 or more conductors. Calculations are based on the Dimensions and Percent Area of Conduit and Tubing from table 4, and from Conductor Dimensions as per Table 5 of the NEC. Maximum allowable percent conduit fill is 53% for 1 conductor, 31% for 2 conductors and 40% for more than 2 conductors, as per table 4. Use the UP, DOWN, TAB or SHIFT+TAB keys to move the cursor to the desired wire size/type position, then enter the quantity of that size/type conductor to include in the conduit. If you want to include other size/types of conductors into the same conduit, then repeat the above procedure. You can enter any combination of conductors in the same conduit. NOTE: Several fields will show an asterisk ( * ). This represents the unavailability of those sizes/types of conductors. Do not alter those fields. Pressing F2 at any time will show the results of the calculation. The program will list all the sizes and types of conductors you chose for the calculation, their individual areas, the total area extensions, the grand total area for all conductors, the minimum trade size conduit required, the total area for the calculated conduit, and the percent conduit fill for the calculation. If more data is available than will fit on the screen, you will be able to use the UP and DOWN ARROW keys to scroll through the data. Pressing any key will return you to the conduit selector input screen with all previous data intact. A printout is available by pressing F10. See the documentation for printing for details. _________________________ Page 6 __________________________ GENERAL CALCULATIONS Cost To Operate Calculates the cost to operate a certain load a number of hours daily for some number of days at a certain KWH utility charge. POWER OF LOAD is the number of watts the load draws. DAILY USE is the number of HOURS the load is operated per day. NUMBER OF DAYS is the number of days the load is operated. PRICE / KWH is the utility charge per killowatt hour. (Example.. 10 cents/kwh, enter .10) NOTE: A value of ten cents/Kwk initially appears in the 'Price/Kwh' field, as an example only. You should change this value to reflect your own price/Kwh charge. After entering the above information, the program calculates and displays the cost to operate the load for the number of hours daily for the number of days at the chosen utility charge. A printout is available by pressing F10. See the documentation for printing for details. Motor Amperes A generic procedure to calculate motor amperage when hp, pf and efficiency are known. The calculation formula is: 1 phase: (hp x 746) / (volts x pf x efficiency) 3 phase: (hp x 746) / (1.73 x volts x pf x efficiency) Simply enter appropriate values at the prompts for hp, pf and eff. If pf and/or eff. is 100% or unity, enter 100 at those prompts. Note that this procedure is not to be used in determining motor full load amperage for the purpose of calculating conductor, overcurrent or overload sizes. Use the 'Motor Calcs' function. _________________________ Page 7 __________________________ Motor HP A generic procedure to calculate motor horsepower when voltage, amperage, pf and efficiency are known. The calculation formula is: 1 phase: (volts x amps x pf x efficiency) / 746 3 phase: (1.73 x volts x amps x pf x efficiency) / 746 Simply enter appropriate values at the prompts for volts, amps, pf and eff. If pf and/or eff. is 100% or unity, enter 100 at those prompts. Amperes Used to calculate amperes when va and volts, and pf are known. The formula is: 1 phase: va / (volts x pf) 3 phase: va / (1.73 x volts x pf) Simply enter appropriate values at the prompts for va, volts and pf. If pf is 100% or unity, enter 100 at that prompt. Va Used to calculate va when volts, amps and pf are known. The formula is: 1 phase: volts x amps x pf 3 phase: 1.73 x volts x pf Simply enter appropriate values at the prompts for volts, amps and pf. If pf is 100% or unity, enter 100 at that prompt. _________________________ Page 8 __________________________ LIGHTING CALCULATION ( Zonal Cavity Method ) Calculates the quantity of lighting fixtures required to light any room or area to any desired footcandle level. The Illuminating Engineering Society (IES) has devised a flexible and accurate method for calculating lighting requirements, called the ZONAL CAVITY METHOD. This method assumes that any room or area to be lighted is made up of three cavities, the CEILING CAVITY, the ROOM CAVITY, and the FLOOR CAVITY. The CEILING CAVITY extends from the ceiling surface down to the lighting fixture mounting level. If the lighting fixtures are recessed or surface mounted then the value of the Ceiling Cavity will be zero. If they are suspended some distance below the ceiling then the value of the Ceiling Cavity is the volume of space between the ceiling surface and the fixture mounting level. The ROOM CAVITY extends from the fixture mounting level down to the work height level. The work height level is the distance above the floor where the required quantity of footcandles is to be maintained (usually desktop or work bench level). The FLOOR CAVITY extends from the work height level down to the floor. If the required footcandles is to be maintained all the way to the floor, then the Floor Cavity value will be zero. Every surface exibits a certain ability to reflect light. Light colored surfaces reflect more light than dark surfaces, so more light will need to be provided in a dark environment. The degree of a surface's reflectivity is referred to as it's Percent Reflection value. Percent Reflection can be accurately measured with a reflectometer, or standard reflectance tables can be referred to, such as the following: TABLE FOR INTERIOR ILLUMINATION DESIGN ---------------------------------------- COLOR % REFLECTION ---------------------------------------- Flat white 75 - 85 Ivory 70 - 75 Buff 60 - 70 Yellow 55 - 65 Light tan 45 - 55 Light green 40 - 50 Gray 30 - 50 Blue 25 - 35 Red 15 - 20 Dark brown 10 - 15 ------------------------------------------ _________________________ Page 9 __________________________ The MAINTENANCE FACTOR is a value determined from the anticipated maintenance of the fixtures and reflective surfaces in the room or area. The intensity of illumination produced by a lighting installation will depreciate after some time due to lamp aging, and dust and dirt buildup. The MAINTENANCE FACTOR is designed to adjust for this. Typical values are from .5 to .8. (.5 for a poorly maintained environment, .8 for well maintained). Each lighting equipment manufacturer publishes data for the COEFFICIENT OF UTILIZATION (CU) for each fixture type and size in it's line. The CU of a fixture is a measure of it's efficiency under specific conditions of room cavity values and effective reflectance values. The formulas used in the ZONAL CAVITY METHOD : CEILING CAVITY RATIO = (5 * Hc (L + W)) / (L * W) ROOM CAVITY RATIO = (5 * Hr (L + W)) / (L * W) FLOOR CAVITY RATIO = (5 * Hf (L + W) / (L * W) WHERE: Hc = distance from ceiling to fixture level (in feet). Hr = distance from fixture level to work height (in feet). Hf = distance from work height to floor (in feet). L = length of room in feet. W = width of room in feet. ROOM LENGTH and ROOM WIDTH values must be entered in FEET. Decimal points are accepted (Ex. 125, 50.5, etc...). CEILING HEIGHT and FIXTURE HEIGHT must also be entered in FEET. Decimal points are acceptable. WORK HEIGHT must also be entered in FEET. Decimal points are acceptable. If you want the WORK HEIGHT to be equal to the floor, simply enter zero. FOOTCANDLE LEVEL is a measure of the intensity of light falling upon a specific surface. Values for Percent CEILING, WALL, and FLOOR Reflectances must be entered as whole numbers (50, 80, etc...) Exact values can be obtained by use of a reflectometer, or a standard table for interior illumination design can be referred to, such as the table for interior illumination design on the previous page. _________________________ Page 10 _________________________ The value entered for MAINTENANCE FACTOR must be less than or equal to 1. The value of between .5 and .8 will be accurate for nearly all calculations. A value of 1 will exclude the MAINTENANCE FACTOR from the lighting calculation. NOTE: A value of .8 initially appears in the 'Maintenance Factor' field, as an example only. You can change this value to reflect your own conditions. To select fixture type, press F2. The menu will ask you to select either 'built-in fixture type' or 'specify fixture type'. Built-In: Fixture types stored internally include Recessed Incandescent, Fluorescent, and High Intensity Discharge. COEFFICIENT of UTILIZATION (CU) values which have been compiled by IES are stored internally for these fixtures. The internally stored fixtures are representitive of their types, as are the internally stored lamp types. You will get accurate results using them, but if you wish to use a type of fixture not available internally, you can choose to specify your own type. Specify: If you choose to specify your own fixture type, you will be prompted for the number of lamps per fixture, the quantity of lumens per lamp, and, the coefficient of utilization (CU) of the fixture. You will need to have the fixture manufacturer's CU specs. LUMEN specs are available from various sources. Lamp manufacturers will have lamp catalogs which will list LUMEN values for their line of lamps. After all data has been entered, the number of fixtures required will be calculated and displayed. A printout is available by pressing F10. See the documentation for printing for details. _________________________ Page 11 _________________________ MOTOR CALCULATIONS Branch Conductor Sizing Calculates motor branch circuit conductor size as per NEC Article 430, Part B, and 430-6. Conductor ampacity is based on 125 percent of motor full load amperage (as determined from table 430-148 or 430-150), multiplied by appropriate power factor multiplying factor, multilpied by appropriate ambient temperature multiplier. This product yields the 'Wire Ampacity Required' of the conductor to be used to supply the motor. The program then selects the conductor size of the type/temperature rating that you specified that meets the required ampacity. This selected wire size is verified by listing the ampacity (NEC Table 310-16) of the calculated wire, and multiplies it by the ambient temperature derating factor. This product yields the maximum allowable ampacity of the selected wire. This value must equal or exceed the 'Wire Ampacity Required' value calculated previously. 21 conductor types/temperature ratings are supported. See the section 'Temperature Limitations' in this file for more info. Ambient temperature derating of conductors is also supported. Fuse or Breaker Sizing Calculates rating or setting of motor branch circuit overcurrent protective device (Nontime-delay fuse, Time delay fuse, Instantaneous trip circuit breaker & Inverse time circuit breaker). NEC Article 430-Part D, and, 430-52. Rating or setting is based on Full load amperage (from table 430-148 & 430-150) of motor, multiplied by appropriate power factor multiplying factor, multiplied by appropriate percentage factor from table 430-152 for the selected device type. Article 430-52(a). If this results in a value other than a standard size or rating of overcurrent protection device, the next higher standard rating is selected. Article 430-52(a), Exception 1. _________________________ Page 12 _________________________ Overload Protection Sizing Calculates motor overload protective device rating. Article 430, Part C. Rating is based on motor full load amperage (from motor nameplate) multiplied by: 125% if nameplate service factor is not less than 1.15, or 125% if nameplate temperature rise is not over 40 degrees C., or 115 % for all others. Access Keys Used To Select Motor Parameters: Press: To Select: Press: To Select: -------------------- -------------------- F1 Help F6 Code Letter F2 Motor Type F7 Wire Type F3 Start Method F8 Ambient Temperature F4 Phase/Volts F9 Overcurrent Type F5 Horsepower F10 Print Report NOTE: The 'Percent Motor Power Factor', parameter is not an accurate representation of true power factor. It is a VERY ROUGH item that should be used with caution. At the 'Percent Motor Power Factor' field, entering 100 will exclude the motor's Power Factor from the calculation. _________________________ Page 13 _________________________ PIPE & WIRE SELECTOR Calculates the conductor size required to carry a certain load for some distance while not exceeding a specific voltage drop percentage, and the trade size conduit required to contain those conductors. 21 conductor types/temperature ratings are supported. See the section 'Temperature Limitations' in this file for more info. Ambient temperature derating of conductors is also supported. Conductor ampacity derating due to the number of current carrying conductors in the raceway is supported as per NEC 310-Note 8(a). Six circuit types are supported: -------------------------------- 1 Phase 2 Wire(Phase & neutral, or 2 Phase conductors) 1 Phase 3 Wire(2 Phase conductors & neutral) 1 Phase 3 Wire(Above circuit from a 4 wire wye system) 3 Phase 3 Wire(3 phase conductors) 3 Phase 4 Wire Wye(3 phase conductors & neutral) 3 Phase 4 Wire Wye circuit with the majority of load harmonic In the third circuit type above, the neutral will carry substantial current, and will be considered as a current carrying conductor in the pipe size selection. NEC 310-Note 10(b). In the last circuit type above, the neutral will carry harmonic currents, and will be considered as a current carrying conductor in the pipe size selection. NEC 310-Note 10(c). Data Input The 'Maximum Percent Of Voltage Drop' field will only accept whole numbers in the range of 0 to 9. This will be the maximum percentage of the supply voltage which can be dropped by the circuit conductors. If you enter 0 in this field, voltage drop will not be considered in the selection of the wire size. 'Full Load Amperage Of Load' is the rated or maximum amperage. 'Source Voltage' is the supply voltage for the circuit. 'Length of Run In Feet' is one way length from supply to load. Access Keys Used To Select Circuit/Conductor Parameters: Press: To Select: Press: To Select: ----------------------- ----------------------------- F1 Help F4 Ambient Temperature F2 Circuit Type. F10 Print Report F3 Wire Type. _________________________ Page 14 _________________________ POWER FACTOR CORRECTION Calculates the existing power factor and the capacitance required to achieve a new power factor. The calculations are accurate for single phase and balanced three phase conditions. Do not rely on these calculations for situations where several loads operate independently on the same feeder or branch circuit, because the total power factor on the feeder or shared branch circuit will vary, depending on which loads are operating. Instead, run a calculation for each load independently. Then, the calculated Kvars of capacitance required should be installed as close as possible to the individual load for which the calculation is performed. Also note that if you improve the power factor of an existing motor, the overload heaters should be changed to protect the motor at the reduced amperage which will result. Before considering the use of capacitance to improve power factor, determine if the low power factor condition is caused by the use of a motor that is oversized for the driven load. Replacing the motor with a more efficient, properly sized unit may be more practical and cost effective. Power factor is the ratio of the true power (in watts) to the apparent power (in voltamps). True power is measured with a wattmeter. Apparent power is the product of volts and amps. The result is the power factor of the load. For example, a load is measured with a wattmeter and indicates 1880 watts. The measured voltage is 240 volts. The measured current is 10 amps: True Power 1800 1800 Power Factor = --------------- = ---------- = ------ = .75 Apparent Power 240 x 10 2400 The power factor of this load is calculated to be .75 (75%). The apparent power (delivered power) of this load is 2400 VA but the true power (useful power) is only 1800 watts. The remaining 600 va are wasted in the form of heat losses. Increasing the power factor would reduce the heat loss and reduce the current requirements of the circuit supplying this load. To increase the power factor of an inductive load, capacitance can be connected to the load. The required amount of capacitance (in Kvars) must be calculated. _________________________ Page 15 _________________________ The formula for determining existing PF and capacitance required: Single Phase - Existing: Kva = (volts x amps) / 1000 PF = Kw / Kva Phase Angle = The angle that has a cosine equal to the PF Kvars = Kva x SIN of the phase angle Single Phase - Proposed: Kva = Kw / Proposed PF Line Amps = (Watts x 1000) / (Proposed PF x Volts) Phase Angle = Angle with a COSINE equal to the proposed PF Kvars = Proposed Kva x SIN of the proposed phase angle Three Phase - Existing: Kva = (volts x 1.73 x amps) / 1000 PF = Kw / Kva Phase Angle = Angle with a COSINE equal to the PF Kvars = Kva x SIN of the phase angle Three Phase - Proposed: Kva = Kw / proposed PF Line Amps = (Kw x 1000) / (Proposed PF x volts x 1.73) Phase Angle = Angle with a COSINE equal to the proposed PF Kvars = Proposed kva x SIN of the phase angle Single and Three Phase: Capacitive Kvars Required = Existing Kvars - Proposed Kvars Recovered Distribution Losses = Existing Kva - Proposed Kva NOTE: Depending on computer processor speed, there will be some delay in calculating the phase angles and the kvars. On a 486/33, it will be unnoticeable, while on an 8087 at 4.77 Mhz it can take 15 seconds or so. _________________________ Page 16 _________________________ PRINTING REPORTS You can print reports either to a printer or to a disk file for all functions except for the general calcs, and for all Quick Reference Tables. Printer support is generic (Printer Port LPT1 only), offering no special print types, although you can set the desired print type, size, etc, on your printer before printing the report. Also supported is the printing of reports to an ASCII disk file, for importing into your word processing program. For the general calcs, you con do a 'Print Screen' to send output to the printer. This can be done on most computers by pressing the SHIFT key and the PRINT key simultaneously. To print a report, press the F10 function key. You will be prompted for a Job Name, Address, City & State, and Description. These are optional and they may contain any data. The data entered at these prompts will be printed at the top of the report*. Next, enter P to print to a printer, or, D to print to disk. When you are ready to print the report, press F10. NOTE: To print any of the Quick Reference Tables, press F10 while viewing the table. The 'Print' input screen allows input of job name, address and description, however, this information will not be printed to any of the Quick Reference reports. Simply leave those fields blank. NOTE: When printing reports or Quick Reference Tables that are longer than one page to printer, the program does NOT check for page breaks. If you prefer, you can set your printer to 'Skip Perforation'. This will leave a margin at the bottom of each page, and continue at the top of the next page. QUICK REFERENCE TABLES Equipment Ground Conductors To determine the required size equipment ground conductor, as per NEC Table 250-95. Grounding Electrode Conductors To determine the proper grounding electrode conductor size, as per NEC Table 250-94. _________________________ Page 17 _________________________ Kw To Amperes To quickly convert single and three phase KW values to ampere values and vice versa. Pressing PG UP & PG DN scrolls between the single phase and three phase tables. Underground Cover Requirements To determine the minimum cover requirements of conduit, underground cable, and other raceways, as per NEC Table 300-5. Metal Device Boxes Table of metal device boxes and their cubic inch capacities. Standard Pull & Junction Boxes Table of standard pull & junction boxes and their cubic inch capacities. Standard Fuses & Breakers Table of standard ratings of overcurrent devices. Transformer Kva To Amperes To quickly convert single and three phase transformer Kva values to ampere values and vice versa. Pressing PG UP & PG DN scrolls between the single phase and three phase tables. NOTE: The data for this table is located in the ELECTRC9.DAT file, and is read in by the program. This file must be located in the same drive\directory as the main program file, ELECTRC9.EXE. Terminal/Conductor Temperature Limitations The new requrements of the 1993 NEC Section 110-14(c). _________________________ Page 18 _________________________ Conductor Ampacity Allowable ampacities and ambient temperature derating factors of NEC Table 310-16. Pressing PG UP & PG DN scrolls the table. NOTE: The data for this table is located in the ELECTRC9.DAT file, and is read in by the program. This file must be located in the same drive\directory as the main program file, ELECTRC9.EXE. SHORT CIRCUIT CALCULATIONS - Point To Point Method The point to point method is a method of calculating available fault currents. To calculate the available fault current at various points throughout an electrical distribution system. You can start with the available short circuit current at a source point (secondary of a utility transformer for example), and determine the fault current available at any point beyond that based on the voltage drop due to wire impedance and the inductive effect of the circuit. Capacative reactance is negligible at 600 volts or less, and is ignored. Note that the values of effective impedance calculated by the program are valid at 75 degrees C, and at 85 percent power factor of the circuit. A maximum of ten points can be calculated, single and three phase. Motor contribution is not presently supportrd in this version of the software. _________________________ Page 19 _________________________ Method used to determine available short circuit current at any point: 1. Obtain the available short circuit current at your starting point: If your starting point is the secondary of a utility transformer, the utility company should be consulted for this information. If your starting point is a transformer and fault current is not known, determine the fault current available at the secondary terminals as follows: A. Calculate the Multiplier: Multiplier = 100 / Percent Transformer Impedance Example: 277/480v, 3 phase 500 Kva transformer Percent nameplate impedance = 2 percent Multiplier = 100 / 2 Multiplier = 50 B. Calculate short cct current at the secondary terminals: Isca = Short circuit current at secondary terminals. Isca = Transformer Full Load Amps x Multiplier Example: Isca = 500 amps x 50 'Multiplier from above' Isca = 25000 amps 2. Calculate the C Factor: C Factor = 1 / Wire Impedance Per Foot Example: 500 kcmil copper conductor in steel conduit From NEC Chapter 9, Table 9: Impedance per 1000 feet = 0.050 Impedance per foot = 0.050 / 1000 = .00005 C Factor = 1 / .00005 = 20000 3. Calculate the F Factor: L = One way conductor length from source point to the fault I = available short circuit current at your starting point C = C Factor E = Line to line voltage at your starting point NPC = Number of parallel conductors per phase For 3 Phase Faults: F Factor = (1.73 x L x I) / (NPC x C x E) For 1 Phase Line to line faults: F Factor = (2 x L x I) / (NPC x C x E) Example: 277/480v, 3 phase source, I = 25000 amps, 150 feet #500 kcmil copper conductors, 1 per phase, steel conduit, C = 20000 F Factor = (1.73 x 150 x 25000) / (1 x 20000 x 480) F Factor = 6487500 / 9600000 = .6757813 _________________________ Page 20 _________________________ 4. Calculate the M Factor: M Factor = 1 / (1 + F Factor) Example: M Factor = 1 / 1.6757813 = .5967366 5. Calculate available short circuit current at the fault: Short Circuit Current At The Fault = Isca x M Factor Isca = available short cct current at your starting point Ifsca = Short circuit current at the fault Example: Ifsca = Isca x M Factor Ifsca = 25000 x .5967366 = 14918 Amps Data Input And Calculation The data input areas are where you will enter parameters for the calculations. Use the UP ARROW and DOWN ARROW keys to move from prompt to prompt. Using the ENTER key moves you down through the prompts. Pressing the ESCAPE key aborts the calculation and returns you to the main menu. An exception is when you are selecting a choice from a group of options by pressing one of the function keys. Pressing ESCAPE here only backs you out of that selection area, and you do not lose any data from the data input areas. The first step in using the function is to input data at an initialization area. Enter the number of points that you wish to calculate fault currents for (maximum of 10). Then press the PG DN key to access the data entry area for point number 1 and proceed to enter data as follows: Available Fault Current At Source - This will be the short circuit amps available at the secondary of your utility or distribution transformer, load side of main service disconnect, etc, or wherever you choose to start the fault calcs from. Note that if you are entering data for point number 2, etc., The source would be the place where that point is fed from. One Way Conductor Length In Feet - The end to end length of the wire run from the source to the location where the available fault current will be calculated. Could be the mains of the service equipment, line terminals of a panelboard, etc. Use the one way length of one wire. Number Of Parallel Conductors Per Phase - the number of multiple conductors in parallel for each phase. _________________________ Page 21 _________________________ Conductor Size - The Awg or Kcmil size of the wire. If the wire size is # 4/0, input 4/0 at the prompt. For 750 Kcmil, input 750. Acceptable wire range is from #12 to 1000 Kcmil. Line To Line Volts Of This Point - The voltage available at the location where the fault current will be calculated. 600 maximum. Do not include any voltage drop in this value. Single Or Three Phase - Phase of this point. Description - Optional field for whatever you wish to enter. F2 - Press the F2 function key to select the wire material (copper or aluminum) and raceway type (steel, aluminum, pvc) used to supply this point. Note that raceway type also applies to cable armor. Also, the calculations are based on three circuit conductors in the raceway. If the circuit conductors for the point being calculated are contained within a raceway where other circuit conductors are present, the accuracy of the calculation could not be assured. Once all the above data has been entered, the results are automatically calculated and the fault current amps is displayed. Pressing the F3 function key will show the details of the calculation. The source current, the C Factor, F Factor, M Factor, and the calculated fault current are displayed. Pressing any key from the detail screen will return you to the data entry area with all previously entered data intact. Note that if you have not completely entered all required data for at least one point, the F3 key will not work. Note that the Description field need not be used, and leaving it blank will not have any effect. You can press PG UP or PG DN to scroll through the data entry areas for each of the number of points that you inputted into the initialization area. You can also PG UP until you are back in the initialization area, change the number of points to calculate, and PG DN through the areas without losing data. However, if you change to a lesser number of points, you will lose the data for the number of points greater than the newly selected number of points. A printout is available by pressing F10. See the documentation for printing for details. _________________________ Page 22 _________________________ TERMINAL/CONDUCTOR TEMPERATURE LIMITATIONS NEC Section 110-14(c): This new requirement of the 1993 NEC specifies the temperature rules for termination of conductors. This requirement affects every termination of conductors to electrical equipment. It also includes separately installed pressure connectors such as lugs. The intent is to protect connected equipment from overheating due to the heat transfer that could result from the connection of, for example, a 90 degree C conductor to a terminal or device that has been tested and approved for use at 75 degrees C. If the conductor were loaded so as to operate at 80 degrees C, as long as it's ampacity was not exceeded, it would not be damaged. However, if that same conductor was connected to the terminal of equipment that was approved at 75 degrees C, the 80 degree heat transfer could damage the equipment or not allow the equipment to function as designed and listed. The basic rule is to provide two termination provisions for conductors and connected equipment, and a third provision for separately installed pressure connectors: 110-14(c)(1) - This first provision groups equipment for circuits rated 100 amps or less, or equipment intended for conductors from #14 to #1. This rule requires the use of the 60 degree C ampacity column of Table 310-16 for selecting the conductors used to connect to this equipment. Exception #1 permits the use of conductors with higher temperature ratings only if they are sized in accordance with their 60 degree C ampacity.* Exception #2 permits the use of higher temperature rated conductors at the ampacities of the higher rated conductors only if the connected equipment is listed for use with the higher rated conductors (such as a 100 amp breaker that is listed for use at 60 or 75 degrees C, AND, the panel or enclosure that the breaker is installed in is also listed for use at the higher temperature). 110-14(c)(2) - This second provision groups equipment for circuits rated over 100 amps, or equipment intended for conductors larger than #1. This rule requires the use of the 75 degree C ampacity column of Table 310-16 for selecting the conductors used to connect to this equipment. Exception #1 permits the use of conductors with higher temperature ratings only if they are sized in accordance with their 75 degree C ampacity.* _________________________ Page 23 _________________________ Exception #2 permits the use of higher temperature rated conductors at the ampacities of the higher rated conductors only if the connected equipment is listed for use with the higher rated conductors. 110-14(c)(3) - Separately installed pressure connectors shall be used with conductors at the ampacities not exceeding the ampacity at the listed temperature rating of the connector. Example: Select feeder conductors for the following sub-panel, where: The net computed feeder load is 60 amperes, the panel is listed for connection at 60 degrees C. maximum, Type THHN conductors are to be used, the ambient temp.is 30 degrees C., no derating required. NEC 310-16, 60 degree C col. - #4 has an ampacity of 70 amps. VOLTAGE DROP CALCULATOR Calculates the voltage drop on existing or proposed single or three phase resistive AC circuits (100% power factor). Copper and aluminum conductors from #14 to 2000 Kcmil are supported. The 'Single or Three Phase' is obvious. The 'Length Of Run' is the length in feet of one conductor from the source of power to the load terminals. The 'Source Voltage' is the voltage measured at the source. The 'Amperage Of Load' is the current required by the load. For example, if the load is a resistance heater requiring 10 amps to operate as designed, then the AMPERAGE would be entered as 10. The WIRE SIZE is in the range of #18 Awg to 2000 Kcmil. Do not include the # sign or the letters Awg or Kcmil. Enter the numeric size of the wire (ex. 14, 1/0, 250, 750). The COPPER or ALUMINUM prompt is self explanatory. After entering the above values, the program will calculate and display: 1. The VOLTAGE DROP of the circuit (the number of volts dropped). 2. The VOLTS AT LOAD (the voltage delivered to the load terminals) 3. The % DROP (the percentage of the source voltage dropped) _________________________ Page 24 _________________________ OTHER ELECTRICAL SOFTWARE AVAILABLE ----------------------------------- LOADCALC Copyright 1991 By Robert J. La Capra Version 1.1 LOADCALC is designed to perform service/feeder load calcs for single dwelling units. Full implementation of both the Standard and Optional Calculation Methods of the 1990 NEC. LOADCALC performs demand factoring, computes net computed load in volt-amps and amperes, determines minimum service entrance and feeder size. Complete, professional printed reports. Send report data to screen, printer, or to an ASCII disk file for import into your word processor. Also prints up to 4 header lines of your choice. Printer ports LPT1 and LPT2 supported. LOADCALC operates with 'what-if' capability. You can quickly and easily change only the data you wish to, without having to start a new calculation and re-enter all the required data. Results are calculated and displayed instantly. Context sensitive help, describing the expected input, any special definitions or requirements, and references to NEC Article/Section, where applicable. Quick reference tables for: Grounding Electrode Conductor Sizes (NEC Table 250-94) Service/Feeder Conductor Sizes (NEC 310, Note 3) * Standard Calculation Method: Demand Factoring For: General Lighting, Small Appliance and Laundry Loads. Cooktop, Range, Wall Oven. Fixed Appliances. Largest Motor Load. Additional User-Definable Loads: 2 add'l appliance loads, motor/nonmotor, fixed/nonfixed. 1 add'l lighting load, continuous/noncontinuous. Automatic selection of larger of heating or cooling loads. * Optional Calculation Method: Demand factoring of 'other loads' as per NEC 220-30. Allows input of heating system type per NEC Table 220-30, and automatically determines larger of heating or cooling loads. Additional User-Definable Loads: 2 additional appliance loads, 1 additional lighting load. _________________________ Page 25 _________________________ Actual Printed Report From LOADCALC Version 1.1 STANDARD SERVICE/FEEDER LOAD CALCULATION - One Family Dwelling Ralph Colbert 23 Maple Tree Lane Byram Twsp., NJ 18539 Block 55, Lot 10 ─────────────────────────────────────────────────────────────────────────────── General Lighting ... : 3200 Sq. Feet x 3 VA = 9600 VA Small Appliance .... : 2 Circuits x 1500 VA = 3000 VA Laundry ............ : 1 Circuits x 1500 VA = 1500 VA --------------------------------------------------------- Total General Light & Small Appliance ........ : 14100 VA The First 3000 VA @ 100% = 3000 VA Remaining 11100 VA @ 35% = 3885 VA --------------------------------------- GENERAL LIGHTING, SMALL APPLIANCE & LAUNDRY DEMAND LOAD ..... : 6885 VA Heating Demand ..... : 20000 VA @ 100% = 20000 VA Cooling Demand ..... : 9000 VA @ 100% = 9000 VA LARGER OF HEATING OR COOLING DEMAND LOADS (Heating) ......... : 20000 VA Cooktop ................. : 4000 VA Range ................... : 12000 VA Wall Oven ............... : 5000 VA COOKING EQUIPMENT DEMAND LOAD ............................... : 13850 VA Dryer ................... : 5000 VA DRYER DEMAND LOAD ........................................... : 5000 VA Water Heater ............ : 6000 VA Attic Fan ............... : 1000 VA Compactor ............... : 800 VA Dishwasher .............. : 1200 VA Disposal ................ : 650 VA Well Pump ............... : 1100 VA ------------------------------------ Fixed Appliance Total ... : 10750 VA 10750 VA @ 75% Demand: 8063 VA FIXED APPLIANCE DEMAND LOAD ................................. : 8063 VA Largest Motor: Well Pump ............... : @ 1100 VA 25% OF LARGEST MOTOR LOAD ................................... : 275 VA _______________________________________________________________________________ NET COMPUTED LOAD ........................................... : 54073 VA 120/240 VOLT SERVICE/FEEDER LOAD ............................ : 225 AMPERES _________________________ Page 26 _________________________ Actual Printed Report From LOADCALC Version 1.1 OPTIONAL SERVICE/FEEDER LOAD CALCULATION - One Family Dwelling Ralph Colbert 23 Maple Tree Lane Byram Twsp., NJ 18539 Block 55, Lot 10 ─────────────────────────────────────────────────────────────────────────────── General Lighting ... : 3200 Sq. Feet x 3 VA = 9600 VA Small Appliance .... : 2 Circuits x 1500 VA = 3000 VA Laundry ............ : 1 Circuits x 1500 VA = 1500 VA Cooktop ...................................... : 4000 VA Range ........................................ : 12000 VA Wall Oven .................................... : 5000 VA Dryer ........................................ : 5000 VA Water Heater ................................. : 6000 VA Attic Fan .................................... : 1000 VA Compactor .................................... : 800 VA Dishwasher ................................... : 1200 VA Disposal ..................................... : 650 VA Well Pump .................................... : 1100 VA ---------------------------------------------------------- Total Other Load ............................. : 50850 VA The First 10000 VA OF Other Load @ 100% = 10000 VA Remaining 40850 VA Of Other Load @ 40% = 16340 VA --------------------------------------------------- OTHER LOAD DEMAND LOAD ...................................... : 26340 VA Heating Type: One Central Space Heating Unit And/Or Supplimentary Unit In Heat Pump Heating Demand Load ... :20000 VA @ 65% = 13000 VA Cooling Demand Load ... : 9000 VA @ 100% = 9000 VA --------------------------------------------------- LARGER OF HEAT OR COOLING DEMAND LOADS [ Heating ] .......... : 13000 VA _______________________________________________________________________________ NET COMPUTED LOAD ........................................... : 39340 VA 120/240 VOLT SERVICE/FEEDER LOAD ............................ : 164 AMPERES LOADCALC REGISTRATION FORM S1234 NOTE: THIS FORM TO BE USED TO REGISTER FOR "LOADCALC" SOFTWARE ONLY. Do Not use to register for "ELECTRC9" software. Registration fee for 1 to 5 users is $45.00 for each user or machine. Site License & Multiple discounts available for 6 or more users. Write for info. Purchase orders without payment attached cannot be accepted. US funds drawn from a US bank only. INCLUDED WITH YOUR REGISTRATION Disk containing latest program version and documentation file. Documentation is supplied on disk file. No printed manuals available. One License To Use Software for each user registered. Unlimited support by US Mail and by CompuServe Mail. No phone support available. Shipping via US Postal Service. Orders shipped same day registration received. OPTIONAL ITEMS * UPS Ground Delivery - $10.00 additional per order. Multiple registrations or registration of LOADCALC and ELECTRC9 together qualify as 1 order, and shipping charge is $10.00 total. Supply street address. NO P.O. BOXES. * 1 Year Of Fax Support for LOADCALC - $10.00 additional per year. For multiple registrations of LOADCALC, fee is still $10.00 total. Fax # supplied with shipment. Return This Form And Registration Fee PAYABLE TO: ROBERT J. LA CAPRA 50 Hillside Terrace Andover, NJ 07821 S.S.# 137-44-7561 SHIP TO: Name: ____________________________________________________________________ Company: _________________________________________________________________ Address: _________________________________________________________________ City,State,Zip: __________________________________________________________ Phone Number: ______-______-________ Fax Number: ______-______-________ Number Of Users: ______ x $45.00 Each = Registration Fee .. : $___________ UPS Ground Shipping Charge - $10.00 Per Order [Optional] .. : $___________ One Year Of LOADCALC Fax Support - $10.00 [Optional] ...... : $___________ __________________________________________________________________________ TOTAL FEE ENCLOSED .... : $___________ DISK SIZE PREFERRED: [ ] 5 1/4" [ ] 3 1/2"