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#39090 - 06/08/04 07:11 PM Isolated ground runs.
Sandro Offline

Registered: 12/30/01
Posts: 449
Loc: Stoney Creek, ON, Canada
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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#39091 - 06/08/04 08:14 PM Re: Isolated ground runs.
twh Offline

Registered: 03/11/04
Posts: 895
Loc: Regina, Sask.
In Canada, see rule 10-906(9)

#39092 - 06/09/04 12:26 AM Re: Isolated ground runs.
iwire Offline

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
It is up to you and the job specifications.
Bob Badger
Construction & Maintenance Electrician

#39093 - 06/09/04 02:10 PM Re: Isolated ground runs.
Radar Offline

Registered: 04/30/04
Posts: 349
Loc: Los Angeles, CA
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?

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