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#11552 - 07/15/02 04:20 PM Zinc water clamp?  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
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 04:44 PM Re: Zinc water clamp?  
Joe Tedesco  Offline
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Joined: Oct 2000
Posts: 2,749
Boston, Massachusetts USA


Joe Tedesco, NEC Consultant

#11554 - 07/16/02 07:08 AM Re: Zinc water clamp?  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
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


#11555 - 07/16/02 08:20 AM Re: Zinc water clamp?  
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,878
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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