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#2847 - 07/26/01 08:53 PM Ground Clamps at water main
STEVE Offline
Member

Registered: 05/04/01
Posts: 17
Loc: PATCHOGUE, NY, USA
Here on Long Island, quite a few homes have
excessive humidity build-up of moisture on the water main pipe that enters the home.
What I normally do during a service change
is to Scotch-Kote the clamp and surrounding
area of the pipe. Too many times have I seen
the clamps severly corrorded. With the scotch-kote on the corrorsion stops, and years later you can check the clamp like it was new. I would like to see this as part of the code, but I think the breathing of the fumes of the Scotch-kote might be an issue. Any ideas?
Steve T.

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#2848 - 07/27/01 03:46 AM Re: Ground Clamps at water main
sparky Offline
Member

Registered: 10/18/00
Posts: 5545
a similar idea i have used with split-bolt connections is to wrap them in a layer of dux seal before tapping them up.
the same theory applied....
(learned that one from an AHJ!)

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#2849 - 07/27/01 05:54 AM Re: Ground Clamps at water main
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Steve,

Welcome back!

I was thinking maybe clear lacquer.

Don't they scotch-kote furniture? I can't see how it could be that harmful (except maybe while spraying?) If you know the chemicals involved or a specific brand you can look up the MSDS info.

Try here:
http://www.hazard.com/

Bill

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#2850 - 07/27/01 05:59 AM Re: Ground Clamps at water main
sparky66wv Offline
Member

Registered: 11/17/00
Posts: 2339
Loc: West Virginia
That would be scotch-guard...

Scotch Kote is an "electrical" sealer... Don't get it on your skin!
_________________________
-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI

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#2851 - 07/27/01 01:17 PM Re: Ground Clamps at water main
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
'66

OooooKay!
Hey, You don't know what kind of Furniture I've got!

That's what I get for makin fun about your "Coherent" threads

Steve,
Sorry about that!
Been puttin in some big hours here!


Bill

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#2852 - 07/27/01 02:54 PM Re: Ground Clamps at water main
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
There seems to be quite a few different types.

If you go to the following page and enter "Scotch Kote" where it says Trade Name it will bring up a list of MSDS for the different types.

http://products.mmm.com/US/MSDS/msdsSearch.jhtml

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#2853 - 07/27/01 05:55 PM Re: Ground Clamps at water main
Tom Offline
Member

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
To the best of my knowledge, oxides of copper are still excellant conductors, unlike aluminum oxide which is more of an insulator. If I was to pick a product to use, it would be "Copper Kote" by T&B, applied between the clamp & pipe.
_________________________
Few things are harder to put up with than the annoyance of a good example.

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#2854 - 07/27/01 08:42 PM Re: Ground Clamps at water main
sparky66wv Offline
Member

Registered: 11/17/00
Posts: 2339
Loc: West Virginia
WOW!

I never realized there were so many different types!

I'm going to look at a bottle at BGE tomorrow to see which type I usually buy when needed.

BTW the ScotchKote I use tends to weaken the jackets of SOW cable. Learned that one the hard way in a fountain light installation. (no one was hurt). I hardly have used it since then. My buddy (and fellow EC) Joe M. got some on his exposed (river shoes) foot (don't tell OSHA) and had an ulcer for about a month on the top of his foot. Nasty! (In his defense, he had to wade out in 1.5' of water to make the repair) I have used it to WP submersible pump connections since, however. The remainder of that bottle ended up as a 1/8" deep mess in the back of my truck... Got the lid on crooked... Remnants remain on some of my tools...

Uhhh.. So much for coherence!

[This message has been edited by sparky66wv (edited 07-27-2001).]
_________________________
-Virgil
Residential/Commercial Inspector
5 Star Inspections
Member IAEI

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#2855 - 07/28/01 08:52 AM Re: Ground Clamps at water main
Tom Offline
Member

Registered: 01/01/01
Posts: 1069
Loc: Shinnston, WV USA
I've found that ScotchKote may not be compatible with other brands of tape. Best if you apply it over other 3M products. When it works, it does a great job, when it doesn't it makes a mess.
_________________________
Few things are harder to put up with than the annoyance of a good example.

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