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Isolated ground runs. #39090 06/08/04 09:11 PM
Joined: Dec 2001
Posts: 444
S
Sandro Offline OP
Member
Do I need to run a separate ground from the panel to EACH isolated ground receptacle, or can I run a single insulated ground conductor from the panel and stop off at each junction box and pick up each IGR at each station JB? Is there a limit to how many IG I can pick off of a single line?

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Re: Isolated ground runs. #39091 06/08/04 10:14 PM
Joined: Mar 2004
Posts: 947
T
twh Offline
Member
In Canada, see rule 10-906(9)

Re: Isolated ground runs. #39092 06/09/04 02:26 AM
Joined: Jan 2003
Posts: 4,391
I
iwire Offline
Moderator
It is up to you and the job specifications.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: Isolated ground runs. #39093 06/09/04 04:10 PM
Joined: Apr 2004
Posts: 349
Radar Offline
Member
IG doesn't mean dedicated ground for each outlet. As Iwire says, check your specifications. Generally it means a separate isolated and insulated grounding wire besides the equipment grounding conductor.

So, for a 120V outlet, one would end up with a hot, a neutral, an equipment ground (for the conduit & outlet box), and an isolated ground (for the ground prong of a receptacle).

You can usually string several IG outlets together without a problem, depending on specifications. However, some engineers and/or specifiers have different ideas about what IG means.

Lastly, if the breaker panel feeding your circuit does not have an IG bus with an upstream isolated ground conductor back to the main, are you really getting an isloated ground?

Radar


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