Lately I have been working on, or been taking down
some house installations.
With almost 100% hitrate I find one or two loose
screws or wire nuts in those .
Is that due to lousy workmanship?
Or is there some reason for a correctly torqued screw
to work itself loose?
One of those loose screws was on a 100 amp clamp......

On 02 Feb 2012 03:51:04 GMT, Sjouke Burry s@b wrote:

Lately I have been working on, or been taking down
some house installations.
With almost 100% hitrate I find one or two loose
screws or wire nuts in those .
Is that due to lousy workmanship?
Or is there some reason for a correctly torqued screw
to work itself loose?
One of those loose screws was on a 100 amp clamp......

There's a tiny guy that goes from house to house loosening those screws.
He's paid to cause house fires so the fire department has something to
do, or they would all end up on unemployment or welfare. You dont see
the guy because he's so small.......

Seriously, your question really has no answer. Lousy workmanship is
possible, or the guy got a call on his phone in the middle of tightening
a wirenut and forgot to tighten it the rest of the way after the call,
or came to work with a hangover, or...... the list goes on
infinately.....

On the other hand, copper and aluminum or copper clad AL main cables
expand and contract at a different amount than steel. These soft metals
also compress, and heat from heavy loads adds to the expansion and
contraction. A screw that was tight at installation can be loose later
due to this. Plus stranded cables will creep, whereas the individual
wires move between other strands, and again, can cause a loose
connection.

In the end, it could be one of a million possibilities....

When I work on electrical stuff, I will occasionally check for loose
wires and just snug up all the screws. Electricians dont use torque
wrenches. It's all by feel. But age can change that...

On 2/1/2012 10:51 PM, Sjouke Burry wrote:
Lately I have been working on, or been taking down
some house installations.
With almost 100% hitrate I find one or two loose
screws or wire nuts in those .
Is that due to lousy workmanship?
Or is there some reason for a correctly torqued screw
to work itself loose?
One of those loose screws was on a 100 amp clamp......

It's called "cold flow".

http://www.thehartford.com/corporate...PS/680-400.pdf

Harry Johnson wrote in
:

http://www.thehartford.com/corporate...PS/680-400.pdf

Jabut.. In the Netherlands we dont have aluminium wiring.

Copper only.

I was going to write about thermal expansion, but the little guy theory
makes as much sense. I heard, one time, from a woman who had electrical
socket that "was fine" until she tried to run her window AC. And then the
socket went dead. Problem turned out to be that the screw that held the
neutral wire had come loose. I've seen more loose neutral screws than
breaker screws. I've gotten into the habit of checking the neutral screws
for tightness when ever I get into a panel box. Only takes a couple minutes.

I'm the tightener guy, which is probably why you can see me. If I was the
loosener guy, I'd be invisible.

Righty, tighty, what a sighty. Loosy, goosey, he's invisible.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

wrote in message
...


There's a tiny guy that goes from house to house loosening those screws.
He's paid to cause house fires so the fire department has something to
do, or they would all end up on unemployment or welfare. You dont see
the guy because he's so small.......

Sjouke Burry s@b wrote in news:Xns9FED8AE4FD0FEsjoukeburrysoesterbe@
213.75.12.10:

Harry Johnson wrote in
:

http://www.thehartford.com/corporate...PS/680-400.pdf

Jabut.. In the Netherlands we dont have aluminium wiring.

Copper only.

Sjouke, hé?

Frysln Boppe:
http://www.youtube.com/watch?v=Ozb6kZePIfE

Note the skutsjesilen sailing race with old-fashioned sailing freighters.
Met my sweetie in sailing camp on the skutsje Gudsekop in Friesland, 1962,
just before senior year in high school.
--
Best regards
Han
email address is invalid

On 02/02/12 09:50 am, Han wrote:

http://www.thehartford.com/corporate...PS/680-400.pdf

Jabut.. In the Netherlands we dont have aluminium wiring.

Copper only.

But even copper flows to some extent under pressure.

Sjouke, hé?

Frysln Boppe:
http://www.youtube.com/watch?v=Ozb6kZePIfE

Note the skutsjesilen sailing race with old-fashioned sailing freighters.
Met my sweetie in sailing camp on the skutsje Gudsekop in Friesland, 1962,
just before senior year in high school.

A Dutch guy from Amsterdam said, "You know how they argue about whether
Fries [Vries? Frys?] is a dialect of Dutch or a separate language?
Actually, it's neither: it's a speech impediment."

Perce

"Percival P. Cassidy" wrote in news:jgebao$g7h$1
@dont-email.me:

A Dutch guy from Amsterdam said, "You know how they argue about whether
Fries [Vries? Frys?] is a dialect of Dutch or a separate language?
Actually, it's neither: it's a speech impediment."

LOL!
Actually it is a different language, but still part of the indo European
language family, not different like Welsh, Basque, Hungarian, Finnish ...

--
Best regards
Han
email address is invalid