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supplemental grounding #216614
01/05/16 01:35 AM
01/05/16 01:35 AM
watersparkfalls  Offline OP
Member
Joined: Mar 2005
Posts: 222
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?

Thanks,
H20

2017 / 2014 NEC & Related Books and Study Guides
Re: supplemental grounding [Re: watersparkfalls] #216615
01/05/16 01:38 AM
01/05/16 01:38 AM
G
gfretwell  Offline

Member
Joined: Jul 2004
Posts: 9,290
Estero,Fl,usa
Yes, you can splice to a supplemental electrode

From the handbook

[Linked Image]

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


Greg Fretwell
Re: supplemental grounding [Re: watersparkfalls] #216625
01/07/16 12:29 AM
01/07/16 12:29 AM
Y
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 849
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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