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- Newsgroups: misc.consumers.house
- Path: sparky!uunet!UB.com!pacbell.com!decwrl!usenet.coe.montana.edu!rpi!news.ans.net!cmcl2!panix!dannyb
- From: dannyb@panix.com (Daniel Burstein)
- Subject: Re: HELP! electrical problem
- Message-ID: <C1I5DM.KKz@panix.com>
- Organization: PANIX Public Access Unix, NYC
- References: <1993Jan26.132203.22930@ryn.mro4.dec.com> <THC.93Jan26183612@monroe.dartmouth.edu>
- Distribution: misc.consumers.house
- Date: Wed, 27 Jan 1993 07:41:45 GMT
- Lines: 80
-
- (tried emailing directly and something went wrong -out there-...)
-
- From MAILER-DAEMON@sun.panix.com Ukn Jan 27 00:14:35 1993
- Received: by sun.Panix.Com id AA20717
- (5.65c/IDA-1.4.4); Wed, 27 Jan 1993 00:13:57 -0500
- Date: Wed, 27 Jan 1993 00:13:57 -0500
- From: Mail Delivery Subsystem <MAILER-DAEMON>
- Message-Id: <199301270513.AA20717@sun.Panix.Com>
- To: dannyb
- Cc: Postmaster
- Subject: Returned mail: Host unknown
- Status: RO
- X-Status:
-
- ----- Transcript of session follows -----
- 550 cmpass.mps.mlo.dec.com (TCP)... 550 Host unknown
- 554 bircsak@cmpass.mps.mlo.dec.com... 550 Host unknown (Authoritative answer from name server)
-
- ----- Unsent message follows -----
- Received: by sun.Panix.Com id AA10123
- (5.65c/IDA-1.4.4 for bircsak@cmpass.mps.mlo.dec.com); Mon, 25 Jan 1993 23:02:17 -0500
- Date: Mon, 25 Jan 1993 23:02:17 -0500
- From: Daniel Burstein <dannyb>
- Message-Id: <199301260402.AA10123@sun.Panix.Com>
- To: bircsak@cmpass.mps.mlo.dec.com
- Subject: Re: HELP! electrical problem
- Newsgroups: misc.consumers.house
- References: <BIRCSAK.93Jan25165914@cmpass.mps.mlo.dec.com>
-
- In misc.consumers.house you write:
-
-
- >Yesterday evening we noticed that the lights were periodically
- >flickering. Not on and off, but a single slight dim/return to full
- >every once in a while. Went to check the fuse box, and when I walked
- >into the garage immediately noticed a burned/electrical smell (like
- >when a fuse blows). None of the fuses were blown, however. I looked
- >around in the attic for gnawed on wiring but found none.
-
- >We have been so far unable to reproduce this or figure out what
- >happened. (And we no longer remember exactly what combination of
- >lights/appliances was on at the time).
-
- >Any hints? Is this an almost-blown fuse? I suspect at least one of
- >our circuits to have to much on it. What should I look for? Any
- >hints at all would be greatly appreciated...
-
- this is a symptom of a loose wire, usually near the circuit breaker/fuse
- panel. What happens is as follows:
-
- If there is a fairly heavy load on the circuit and the wiring isn't
- 100% clamped down properly (i.e. original messup or wear and tear), it
- will start to warm up. this causes expansion, which leads to wire "creep"
- (the wire under the screw expands, has no room to do so, and part of it
- slips away).
-
- Next step: load cuts down when you turn off a few appliances. the wire
- cools off and shrinks, so there is now some spacing between the wire and
- the screw.
-
- Next time current starts flowing you get arcs, and even more heating, plus
- some pitting, etc.
-
- So, to check this out, look very closely at the wires leading away from
- the fuses. check them for any looseness or pitting.
-
- Oh, one more common possibnilty: there was arcing between the fuse base
- and the circuit panel. to check this out, CAREFULLY unscrew the fuses,
- inspect their bottoms, and look (VERY, VERY, carefully) at the point of
- contact in the socket.
-
- ----------
-
- there are lots of other possibilites, but these are probably the two most
- common.
-
- dannyb@panix.com
-
-
- m
-