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#216614 - 01/04/16 09:35 PM supplemental grounding
watersparkfalls Offline

Registered: 03/08/05
Posts: 210
Loc: Washington...Not DC
OK I feel like I should know this off the top of my head, but I am drawing a blank. First question is simply "Can the supplemental grounding electrode conductor go from panel to first ground rod and from that first ground rod to the second in two separate pieces of wire?" In other words use 4 acorns and 2 separate pieces of wire. And secondly when installing a 400 amp service with 2 qty 200 amp panels can I run from the ground rods to the first panel and then unbroken to the second panel/ Or does each service require its own supplemental grounding conductor?


2014 / 2011 NEC & Related Books and Study Guides
#216615 - 01/04/16 09:38 PM Re: supplemental grounding [Re: watersparkfalls]
gfretwell Offline


Registered: 07/20/04
Posts: 9024
Loc: Estero,Fl,usa
Yes, you can splice to a supplemental electrode

From the handbook

BTW does anyone see the anomaly in the code, demonstrated in the exhibit.
Greg Fretwell

#216625 - 01/06/16 08:29 PM Re: supplemental grounding [Re: watersparkfalls]
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
Yes, you can splice to a supplemental electrode

Ist you MUST make sure it is a supplemental Grounding Conductor not required by Code.

See 250.52./250.53/ 250.64

Splicing 250.64 C

Taping 250.64 D


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