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#11552 - 07/15/02 01:20 PM Zinc water clamp?
Redsy Offline
Member

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
Copper GEC, copper water line. Are zinc-alloy clamps OK?
The last few times I ordered clamps from the supply house, they sent zinc. I prefer brass.
Anyone?

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#11553 - 07/15/02 01:44 PM Re: Zinc water clamp?
Joe Tedesco Offline
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Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA
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Joe Tedesco, NEC Consultant

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#11554 - 07/16/02 04:08 AM Re: Zinc water clamp?
Redsy Offline
Member

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
Thanks, Joe.
The page doesn't state conductor material compatibilities, but I spoke to my supplier and got the box for the zinc clamps, which shows use for copper conductors and either copper or galvanized pipe.
I have seen what appeared to be these zinc clamps corrode badly when attached to a copper water line, but my supplier said that aluminum clamps are, or were, available. Maybe aluminum is what I saw

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#11555 - 07/16/02 05:20 AM Re: Zinc water clamp?
Bill Addiss Offline
Member

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

Our Utility "Red Book" (Guidelines) recommend that zinc-coated, steel type connector be used only on Iron water pipe.

Bill

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