home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!news.univie.ac.at!scsing.switch.ch!univ-lyon1.fr!ghost.dsi.unimi.it!rpi!uwm.edu!spool.mu.edu!agate!ames!titan.ksc.nasa.gov!titan!michael
- Newsgroups: misc.consumers.house
- Subject: Re: HELP! electrical problem
- Message-ID: <MICHAEL.93Jan27122200@sunbeam.ksc.nasa.gov>
- From: michael@sunbeam.ksc.nasa.gov (Michael D. Myjak x7-3286)
- Date: 27 Jan 93 12:22:00
- References: <1993Jan26.132203.22930@ryn.mro4.dec.com> <1993Jan26.213416.29127@sequent.com><C1Hys4.4DC@world.std.com>
- Distribution: misc.consumers.house
- Organization: NASA, Kennedy Space Center, FL.
- Nntp-Posting-Host: sunbeam.ksc.nasa.gov
- In-reply-to: moroney@world.std.com's message of Wed, 27 Jan 1993 05:19:15 GMTLines: 45
- Lines: 45
-
- In article <C1Hys4.4DC@world.std.com> moroney@world.std.com (Michael Moroney) writes:
-
- > abbott@priory.enet.dec.com (Robert Abbott) writes:
- >>
- >Neutral from the street!!?? Where do you live that the power company runs
- >a neutral line? The only "bare steel cable" I am familiar with is purely
- >for mechanical strength.
-
- All places that get 120V/240V single phase service get 3 conductors from
- the pole. There are 2 "hots" and a neutral. The voltage between the two hots
- is 240 volts, the voltage between either hot and the neutral is 120 volts.
-
- Mike's right. We just had a new underground service installed. They
- used #4o for the two hot lines, and #1o for the neutral return.
- -- BTW, I have a dual 200amp setup --
-
- WRT the original poster, this really won't apply 'cus its about a new
- installation. None the less, the flickering is indeed indicative of a
- problem. It can be a bad neutral, or it can be a short, or even
- something else. We experienced a similar "flickering" with our system,
- although no smell or smoke. We complained to the utility company, and
- they came out and put a meter on the line for several days in order to
- get a handle on the problem. The meter reading showed them that the
- line voltage on one leg of the circuit was indeed dropping -- by almost
- 10%!
-
- What they found out was that the original installation engineer -- for
- the power company -- had used (specified) an undersized wire for the
- length needed (~700') to connect to a previously existing transformer.
- (Me thinks that they did this to prevent having to install another
- transformer on the corner of my lot and therefore save big $$$).
- Rather then dig up and replace the almost 700' underground, they cut
- the lines and connected them to a newly installed transformer. This
- cut the secondary line length in half. Apparently it was this long run
- that caused me to have a brown-out situation when ever high demand
- device (like a dishwasher or garbage disposal!) was turned on.
-
- --
- - Michael D. Myjak
- Senior Technical Specialist, Systems Analyst
- McDonnell Douglas Space Systems Company
- Kennedy Space Center, Fl., 32815
- MYJAK@TITAN.KSC.NASA.GOV
-
- Gravity. It's not just a good idea. Its the LAW!
-