Cold Water Ground

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shaw0486

Senior Member
Location
baltimore
We are building a project and the engineer has over sized the grounding electrode to the cold water to a 400 KCMIL. We have search high and low for a manufacturers that makes a pipe clamp that will accept a 400 KCMIL and no one makes one that we can located. Does anyone have any recommendation on terminating this?
 

LarryFine

Master Electrician Electric Contractor Richmond VA
Location
Henrico County, VA
Occupation
Electrical Contractor
We are building a project and the engineer has over sized the grounding electrode to the cold water to a 400 KCMIL. We have search high and low for a manufacturers that makes a pipe clamp that will accept a 400 KCMIL and no one makes one that we can located. Does anyone have any recommendation on terminating this?
How about using a lug that will fit the wire, attached to a ground clamp with the 1/4-20 terminal screw.
 

Chamuit

Grumpy Old Man
Location
Texas
Occupation
Electrician
1
 

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curt swartz

Electrical Contractor - San Jose, CA
Location
San Jose, CA
Occupation
Electrical Contractor
Ilsco GPL ground clamps are available to fit wire sizes up to 500. I'm sure other manufactures have similar.

I would have told the engineer to adjust his/her plans to the correct wire size.
 

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
Ilsco GPL ground clamps are available to fit wire sizes up to 500. I'm sure other manufactures have similar.

I would have told the engineer to adjust his/her plans to the correct wire size.

I've always wondered why engineers want larger than the required #3/0 GEC's. :?

We frequently see spec's that call for 500 kcmil copper, that usually gets value engineered down to a #3/0. :thumbsup:
 
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