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1991-07-01
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| ELECTRC8
| --------
| Copyright 1991, by Robert J. La Capra
| All Rights Reserved
|
| Shareware Distribution Version
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| Robert J. La Capra
| 50 Hillside Terrace
| Andover, NJ 07821
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-- Table Of Contents --
Shareware ................................................ I
Disclaimer ............................................... II
Included Files ........................................... II
Introduction ............................................. 1
MENUS - Main And Function ................................ 2
DATA INPUT ............................................... 2
BOX FILL & SIZING CALCULATIONS
Device Box Fill Calculations ........................ 3
Junction, Pull Box Calculations:
Straight Pull .................................. 4
Angle or U Pull ................................ 4
CONDUIT SELECTOR ......................................... 5
COST TO OPERATE .......................................... 5
LIGHTING CALCULATIONS (Zonal Cavity Method) .............. 6
MOTOR CALCULATIONS
Branch Conductor Sizing ............................. 9
Fuse or Breaker Sizing .............................. 9
Overload Protection Sizing .......................... 9
PIPE & WIRE SELECTOR AND COSTCOMP ........................ 10
REFERENCE TABLES
Equipment Grounding Conductor ....................... 11
Grounding Electrode Conductor ....................... 11
Killowatt - Ampere Table ............................ 11
Underground Cover Requirements ...................... 11
Metal Device Box Table .............................. 11
Standard Pull & Junction Boxes ...................... 11
Standard Fuse & Breaker Table ....................... 11
Transformer Kva - Ampere Table ...................... 11
SETUP
Color Defaults ...................................... 11
VOLTAGE DROP CALCULATOR .................................. 12
Registration ............................................. 13
Registration form ........................................ 14
= Shareware =
Shareware is a term used to describe a software distribution or
marketing method. Under the shareware concept, software may be
freely copied and passed along to others, or distributed through
bulletin board systems, shareware distributors, etc...
As a recipient of a shareware program, you may use the software
for a short trial period to determine if it meets your needs. If
it does, you must pay the registration fee to the author of the
program. By paying the fee, you are granted the right to retain
the software for your own use. If the software is not suitable,
then you are not obligated to pay the fee, but you must not
continue to use the program.
The shareware system provides substantial benefits to you:
1. You get to try out the software before you buy it.
2. Shareware is much less expensive than comparable commercial
packages. You don't pay for marketing and packaging.
3. Many programs have been developed by expert programmers who
would never consider marketing their products commercially.
All they ask in return is a small fee to compensate them for
the considerable time and effort they have invested in the
development, testing and support of their products.
4. Shareware authors are much more responsive to the users'
requests for bug fixes, added features, special modifications,
etc...
The system is based entirely on the honor system, and usually
works well. Most people are honest and wouldn't violate the trust
placed in them by the author of the software.
Shareware is not free software. The author counts on your
integrity. If you intend to continue to use the program, please
register using the form at the end of this manual, or the form
included in the file "ELECTRC8.REG". Registration entitles you to
an expanded, 'Registered-User' version of this program. See the
end of this manual for details.
I
* 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.
|
| 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.
|
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| FILES INCLUDED ON ELECTRC8 DISK :
| -------------------------------------------------------
| Descrip.doc Description of program
| Update.new Changes in this version
| Electrc8.reg Registration Form
| Electrc8.doc This documentation file
| Electrc8.exe Electrc8 program
| Electrc8.bug Problem report form
|
|
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|
| The importance of making a working copy of this or any other
| program disk cannot be too strongly stressed ! Please STOP NOW
| and copy all the files included on the ELECTRC8 disk to a
| blank formatted disk, and place the original in a secure place.
II
Introduction:
-------------
ELECTRC8 is designed to perform most common electrical contracting
and engineering calculations :
* Device, junction and pull box calcs.
* Conduit size selection for many combinations of different wire
sizes & types.
* Determine the cost to operate various loads at different
kwh charges.
* Lighting calculations based on zonal cavity method.
* Motor conductor, overcurrent and overload calculations.
* Calculate required wire and conduit size based on allowable
voltage drop.
* Quick reference tables for:
Grounding electrode conductor size
Equipment grounding conductor size
Underground cover requirements
KW to ampere tables
Transformer Kva to ampere tables
Metal device box size and capacity
Standard fuse & breaker ratings
Standard pull & junction box table
* Calculate voltage drop for various loads, voltages, wire size
and run lengths.
* 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 1990 National Electrical Code.
The National Electrical Code is a copyrighted document of the
National Fire Protection Association, Batterymarch Park, Quincy,
MA. 02269.
Page 1
MAIN MENU:
---------
To run ELECTRC8, insert the program disk into the disk drive and
type ELECTRC8 then press ENTER or RETURN.
The program starts up with an opening screen with a prompt for you
to input a random number as displayed. Enter the number exactly as
it is displayed. The main menu will follow.
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 now have 'What-If' data entry routines. This method
of data input and calculation allows you to instantly see the
results of changing one data item at a time. You will not need to
restart the function from the beginning and re-enter all data just
to see the effect of changing one parameter.
The data input routines are similar in all functions. Use the UP
and DOWN ARROW keys, or ENTER, 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 you 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.
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.
Page 2
DEVICE BOX FILL CALCULATIONS:
----------------------------
Determines cubic inch volume required for boxes, as per NEC
section 370-6. Conductor size range is from #18 thru #6.
Free space (cubic in.) required for each conductor is as follows:
----------------------------------------
# 18 .. 1.5 # 10 .. 2.5
# 16 .. 1.75 # 8 .. 3
# 14 .. 2 # 6 .. 5
# 12 .. 2.25
Deductions are as follows:
-------------------------
1 or more Fixture studs, cable clamps, hickeys 1 deduction
Each Strap containing 1 or more devices ....... 2 deductions
1 or more grounding conductors entering box ... 1 deduction
1 or more Isolated Ground conductors .......... 1 deduction
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.
** One or more grounding conductors, or, a second set of grounding
conductors (isolated ground ), should not be included in this
conductor count. They will be asked for later.
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.
Page 3
JUNCTION, PULL BOX CALCULATIONS:
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.
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. The
current screen will be saved, and the table will be shown. When
you wish to return to the previous screen, press any key.
Page 4
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.
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.
Page 5
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 6
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.
Page 7
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.
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.
Page 8
MOTOR CALCULATIONS:
-------------------
Branch Conductor Sizing:
-----------------------
Calculates motor branch circuit conductor size. 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.
Conductor types supported include THW, THWN, THHN, XHHW Copper,
THHN, XHHW Aluminum.
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) of motor, 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.
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 marked service factor is not less than 1.15, or
125 % if nameplate marked temp. rise is not over 40 degrees C., or
115 % for all others.
Access Keys Used To Select Motor, Wire & Overcurrent Parameters:
-----------------------------------------------------------------
Press: To Select: Press: To Select:
-------------------- --------------------
F4 Volts F6 Code Letter
F5 Horsepower F7 Wire Type
F8 Overcurrent Type
At the 'Percent Motor Power Factor' field, entering 100 will
assume 100% power factor and exclude the motor's Power Factor from
the calculation.
After all data has been entered, the calculation will be performed
and the results will be displayed.
Page 9
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.
Conductor types supported include THW, THWN, THHN, XHHW Copper,
THHN, XHHW Aluminum.
Conductor ambient temperature derating is supported, according to
the ampacity correction factors at the bottom of NEC Table 310-16.
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 consisting of
electric discharge lighting, computers, or similar equipment.
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.
The 'Full Load Amperage Of Load' is the rated or maximum amperage.
The 'Source Voltage' is the supply voltage for the circuit.
The 'Length of Run In Feet' is one way length from supply to load.
Press F2 to select the circuit type.
Press F3 to select the wire type.
Press F4 to select ambient temperature of the circuit conductors.
After you have entered the data, the program will calculate and
display the required conductor and pipe size.
Page 10
EQUIPMENT GROUND CONDUCTOR TABLE:
--------------------------------
To determine the required size equipment ground conductor,
as per NEC Table 250-95.
GROUNDING ELECTRODE CONDUCTOR TABLE:
-----------------------------------
To determine the proper grounding electrode conductor size,
as per NEC Table 250-94.
KW TO AMPERE TABLES:
-------------------
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 TABLE:
-----------------------
To determine the minimum cover requirements of conduit,
underground cable, and other raceways, as per NEC Table 300-5.
METAL DEVICE BOX TABLE:
----------------------
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 FUSE & BREAKER TABLE:
-----------------------------
Table of standard ratings of overcurrent devices.
TRANSFORMER KVA TO AMPERE TABLE:
-------------------------------
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.
SETUP:
Color Defaults:
--------------
As supplied, 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 executed, and saved to a disk
file, which will automatically be used for future program use.
Page 11
VOLTAGE DROP CALCULATOR:
-----------------------
Calculates the voltage drop on existing or proposed single phase
resistive AC circuits (100% power factor). Copper and aluminum
conductors from #14 to 2000 Kcmil are supported. The registered
user version supports 3 phase circuits.
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 of
power.
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 12
================================================================
REGISTRATION
----------------------------------------------------------------
When you register your copy of ELECTRC8, an expanded 'Registered
User' version of the software will be shipped to you immediately.
That version will support these additional functions:
* Three phase motor calculations:
Branch conductor sizing,
Overcurrent protection sizing, and
Overload protection sizing.
* Horsepower ratings not available in this version.
* Motor types not available in this version.
* Motor starting methods not available in this version.
* Additional general calculations - Single & 3 Phase:
Amperes when motor HP, PF and EFF. is known,
Amperes when watts or VA and PF is known,
Watts or VA when voltage, current and PF is known,
Motor HP when voltage, current, efficiency and PF are known.
* Short circuit calculations:
Start at a utility transformer or service entrance and
perform fault current calculations at various points along
the distribution system using BUSSMANN's Point-To-Point
method. Single and three phase calcs. Wire size & length,
single or parallel conductors - cu/al, magnetic/non-magnetic
raceways.
* Support of 3 phase circuits in the Voltage Drop Calculations.
* Print routines for all functions:
Print output to an ASCII disk file or to a printer.
* Elimination of the program's opening screen.
Page 13
ELECTRC8, Copyright 1991, By Robert J. La Capra
== REGISTRATION FORM ==
SHIP TO:
Name: _______________________________________________________
Company: ____________________________________________________
Address: ____________________________________________________
City,State,Zip:______________________________________________
Fee Enclosed: $__________
Where did you obtain ELECTRC8 ?:
_____________________________________________________________
Suggestions & Comments, if you wish:
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
_____________________________________________________________
==================================================================
Registration fee for ELECTRC8 is $45.00 for each user.
Purchase orders without payment attached cannot be accepted.
Send this form and registration fee to:
Robert J. La Capra
50 Hillside Terrace
Andover, NJ 07821
Once again, thanks for using and supporting ELECTRC8. As always,
any questions, comments and suggestion are welcome.
==================================================================
Page 14
