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Old 09-30-2012, 08:58 PM   #1
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Help identifying wire...




http://imageshack.us/a/img29/4219/p1030043i.jpg

This silver wire is running down from my attic to one of the galvanized water pipes. I went up into the attic and I lose the wire to some cramped parts of the house. It doesn't appear to run back to the electrical box. Any ideas what this could be? A ground wire? I am repiping with Pex....do I need to extend this wire to another part of metal, or can it simply be removed?


Thanks for the advice.

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Old 09-30-2012, 09:05 PM   #2
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Help identifying wire...


Cable or telco ground. Most likely telco.
Yes, you should route it to a valid grounding source.

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Old 09-30-2012, 09:08 PM   #3
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Originally Posted by Speedy Petey View Post
Cable or telco ground. Most likely telco.
Yes, you should route it to a valid grounding source.
Thanks! Is it likely aluminum wire? Want to buy a like type if I'm going to extend it....

I'm assuming I can't just mix copper grounding wire with this.
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Old 09-30-2012, 09:11 PM   #4
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Help identifying wire...


Highly unlikely that it is AL, although it looks like it. Good chance it is tinned CU. How old is it (the wire or the house)?

You are right, do not mix CU and AL in a splice, or if you do make sure you get an approved splice for it.
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Old 09-30-2012, 09:13 PM   #5
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Help identifying wire...


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Originally Posted by Speedy Petey View Post
Highly unlikely that it is AL, although it looks like it. Good chance it is tinned CU. How old is it (the wire or the house)?

You are right, do not mix CU and AL in a splice, or if you do make sure you get an approved splice for it.
House is 74'. You're right it is tinned CU when I looked at a cross section. Is it imperative this is grounded immediately? I'd like to remove some of this pipe tonight but won't be able to get more wire tonight.

I don't suppose the fact that I don't have phone service at the house doesn't make a difference does it?
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Old 09-30-2012, 10:01 PM   #6
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Help identifying wire...


Some older houses used to ground their bathroom fixtures by running a single conductor from the bathroom light(s) to the water pipes.

Betcha this is one of those deals
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Old 09-30-2012, 10:21 PM   #7
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Help identifying wire...


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Some older houses used to ground their bathroom fixtures by running a single conductor from the bathroom light(s) to the water pipes.

Betcha this is one of those deals
The wire does not lead to the bathroom light or fan. Bypasses them and appears to head toward the kitchen area. There is a phone line over there....
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Old 09-30-2012, 10:28 PM   #8
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Help identifying wire...


They installed similar grounding schemes in kitchens as well ....
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Old 09-30-2012, 10:33 PM   #9
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Help identifying wire...


I can see that. But, if it were for the kitchen it seems like they'd just connect to the galvanized in the kitchen. Instead, this runs a good 30 ft in the attic then through the wall to galvanized in the bathroom.

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