ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Trumpy 3
Recent Posts
weatherproof fan box
by sparkync. 06/28/17 02:18 PM
High Leg Delta, phase angles
by gfretwell. 06/27/17 12:17 PM
Mains supply in GDR
by Texas_Ranger. 06/27/17 07:44 AM
Feed to spa panel
by HotLine1. 06/25/17 05:28 PM
Weatherhead, POA, height?
by HotLine1. 06/24/17 02:37 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
238,288 Are you busy
173,497 Re: Forum
166,297 Need opinion
Who's Online Now
0 registered members (), 78 guests, and 7 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#216614 - 01/05/16 01:35 AM supplemental grounding  
watersparkfalls  Offline
Member
Joined: Mar 2005
Posts: 216
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

#216615 - 01/05/16 01:38 AM Re: supplemental grounding [Re: watersparkfalls]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,087
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

#216625 - 01/07/16 12:29 AM Re: supplemental grounding [Re: watersparkfalls]  
Yoopersup  Offline
Member
Joined: Mar 2003
Posts: 822
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



Member Spotlight
lil suzi
lil suzi
Midwest
Posts: 57
Joined: August 2003
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 15 (0.002s) Memory: 0.7527 MB (Peak: 0.8762 MB) Zlib enabled. Server Time: 2017-06-28 19:10:30 UTC