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'[OT]Dissimilar metals'
1999\09\24@180156 by Dan Larson

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On Fri, 24 Sep 1999 17:48:07 -0400, Robert A. LaBudde wrote:

>I'm one of those unfortunate individuals who lives in a house with aluminum
>wiring.
>
>Normal use causes the aluminum to loosen at all connections due to thermal
>contractions and expansions at the joints. Then the resistance increases,
>which increases heat, which loosens further. Eventually it can cause a fire
>in the wall (which a neighbor had). You have to have an electrician
>retighten all connections every 5-10 years.

When I was purchasing my new home, I followed the inspector
around.  Fortunately, my house is wired with all copper, except
for an aluminum cable grounding the breaker box to the water main.

I asked the inspector about aluminum wiring and he told me that
they have some kind of paste that they treat the contacts and
connections with that fixes the resistance problem on houses
with aluminum wiring.

Anyone here have an old  house with bare exposed wiring in the attic
separated only by ceramic insulators?  No *that's* scary !

Dan

1999\09\25@154106 by Robert M. McClure

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At 04:58 PM 9/24/99 -0800, Dan Larson wrote:
>On Fri, 24 Sep 1999 17:48:07 -0400, Robert A. LaBudde wrote:
>
>............
>
>Anyone here have an old  house with bare exposed wiring in the attic
>separated only by ceramic insulators?  No *that's* scary !
>
>Dan
>
Don't have such a house now, but grew up in one.  My grandfather built
a house in East Texas in 1921-1922, which had the type of wiring you
describe.  It is called "knob and tube" wiring, for the knobs holding
the wires, and the ceramic tubes through holes in the framing through
which the wires ran.  When in high-school the house was renovated and the
wiring (almost all of it) replaced with "Romex".  That was in 1950.
I was interested in learning the techniques and asked the electrician
if I could help.  I wound up doing all the work and he got paid.  I received
my pay in education, for which I have been grateful ever since.  For
the record, knob and tube was considered obsolete before WWII.

Bob McClure

1999\09\26@143129 by Nigel Goodwin

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In message <spam_OUT3.0.1.32.19990925123940.00943b10TakeThisOuTspammail.unidot.com>, Robert M.
McClure <.....rmmKILLspamspam@spam@UNIDOT.COM> writes
{Quote hidden}

I've never seen or heard of that in the UK, perhaps with the higher
voltage it was never done?. The oldest I've seen are linen or rubber
covered live and neutral with an outer sheathing of lead. The lead outer
is used as the earth connection!.

There are still probably quite a few houses in the UK with wiring like
this, but it's EXTREMELY!! dangerous. The linen/rubber perishes over the
years and if you touch it, it just crumbles away, leaving bare
conductors inside a lead casing!.
--

Nigel.

       /--------------------------------------------------------------\
       | Nigel Goodwin   | Internet : nigelgspamKILLspamlpilsley.demon.co.uk     |
       | Lower Pilsley   | Web Page : http://www.lpilsley.demon.co.uk |
       | Chesterfield    | Official site for Shin Ki and New Spirit   |
       | England         |                 Ju Jitsu                   |
       \--------------------------------------------------------------/

1999\09\26@175853 by Tom Handley

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  Bob, my house was built in 1906. It's a two story house with an attic and
basement. A lot of the wiring is `knob and tube'. There was an update with
wire that I can't identify other than to say that I'm glad I don't have
rats... My family moved here in 1955. I came back home around 5 years ago.
The first thing I did was isolate circuits. I ran 20A service to the
kitchen, the furnace (all the lights in the house dimmed when it came on),
my home-office-lab, and external outlets. I then had to go through the
`maze' of old wiring to track down lighting and outlets. Where possible I
ran 20A service to most outlets. For lighting, I used 15A. There are a few
remnants of the old wiring buried in a wall but I sleep easier...

  - Tom

At 12:39 PM 9/25/99 -0700, Robert M. McClure wrote:
{Quote hidden}

------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)

1999\09\27@012620 by Dave Bell
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Tom Handley wrote:

>   Bob, my house was built in 1906. It's a two story house with an attic
>and basement. A lot of the wiring is `knob and tube'. There was an update
>with wire that I can't identify other than to say that I'm glad I don't
>have rats...

 Without seeing it, I'd guess "non-metallic sheathed cable", a precursor
to Romex. It had rubber or plastic insulated conductors, separated by a
hard paper wrap, inside a fabric outer envelope, with (usually) aluminum
paint or ink on the outside. Kind of looked like duct tape-sheathed Romex.

Dave

1999\09\27@100905 by Tom Handley

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  Dave, that's exactly the cable! I still have some of it running to
wall switches. It's a real `pain in the ass' to work with...

  - Tom

At 10:24 PM 9/26/99 -0700, Dave Bell wrote:
{Quote hidden}

------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)

1999\09\27@111422 by Andy Kunz

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At 06:39 AM 9/27/99 -0700, you wrote:
>   Dave, that's exactly the cable! I still have some of it running to
>wall switches. It's a real `pain in the ass' to work with...

Don't throw it out.  It's actually very good copper, and if you take it to
a decent recycler when you remove it, you should get a premium.  Too much
of the wire going into homes today has other metals in it.

Andy

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1999\09\27@135804 by Clint Sharp

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In message <3RFO9GAyZe73Ew7Nspamspam_OUTlpilsley.demon.co.uk>, Nigel Goodwin
<@spam@nigelgKILLspamspamLPILSLEY.DEMON.CO.UK> writes
>I've never seen or heard of that in the UK, perhaps with the higher
>voltage it was never done?. The oldest I've seen are linen or rubber
>covered live and neutral with an outer sheathing of lead. The lead outer
>is used as the earth connection!.
>
>There are still probably quite a few houses in the UK with wiring like
>this, but it's EXTREMELY!! dangerous. The linen/rubber perishes over the
>years and if you touch it, it just crumbles away, leaving bare
>conductors inside a lead casing!.
Tell me about it, I went into the loft the other day and found that the
entire upstairs lighting circuit is using this stuff, got someone
working out a quote to rewire the whole house as I type this!
{Quote hidden}

--
Clint Sharp

1999\09\27@155248 by Tom Handley

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  I was just thinking of all the copper I've `thrown in the trash' over
the years...

  - Tom

At 11:05 AM 9/27/99 -0400, Andy Kunz wrote:
{Quote hidden}

------------------------------------------------------------------------
Tom Handley
New Age Communications
Since '75 before "New Age" and no one around here is waiting for UFOs ;-)

1999\09\28@015836 by Nigel Goodwin

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In message <RemoveMEcF5BOAA2pp73EwOsTakeThisOuTspamclintsmc.demon.co.uk>, Clint Sharp
<spamBeGoneclintspamBeGonespamCLINTSMC.DEMON.CO.UK> writes
>>There are still probably quite a few houses in the UK with wiring like
>>this, but it's EXTREMELY!! dangerous. The linen/rubber perishes over the
>>years and if you touch it, it just crumbles away, leaving bare
>>conductors inside a lead casing!.
>Tell me about it, I went into the loft the other day and found that the
>entire upstairs lighting circuit is using this stuff, got someone
>working out a quote to rewire the whole house as I type this!

I would get it done as soon as possible, it's really dangerous stuff!.
--

Nigel.

       /--------------------------------------------------------------\
       | Nigel Goodwin   | Internet : TakeThisOuTnigelgEraseMEspamspam_OUTlpilsley.demon.co.uk     |
       | Lower Pilsley   | Web Page : http://www.lpilsley.demon.co.uk |
       | Chesterfield    | Official site for Shin Ki and New Spirit   |
       | England         |                 Ju Jitsu                   |
       \--------------------------------------------------------------/

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