Sub-panel water bond

Dennis Alwon

Moderator
Staff member
Location
Chapel Hill, NC
Occupation
Electrical Contractor
Welcome to the forum

I have to ask why do you want to bond the sub panel? Is the panel in the same building as the main service panel? Is there a 4 wire cable running to the sub panel? Need those answer. But if you are looking to ground the panel thru the water pipes then no you cannot do that.
 

hbiss

EC, Westchester, New York NEC: 2014
Location
Hawthorne, New York NEC: 2014
Occupation
EC
I have to ask why do you want to bond the sub panel?
The other way around. :D I think he's wanting to bond the metallic water lines within the building to ground and want's to come off a sub-panel ground bar. The water lines are not bonded now by virtue of the plastic main line coming into the building. Is that right OP?

-Hal
 

Dennis Alwon

Moderator
Staff member
Location
Chapel Hill, NC
Occupation
Electrical Contractor
I believe the bonding of the water lines needs to be done at the service panel however if the equipment grounding conductor to the sub panel is sized large enough to satisfy 250.102(C)(1) then I believe you are okay
 
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