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#39090 06/08/04 10:11 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?

#39091 06/08/04 11:14 PM
Joined: Mar 2004
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twh Offline
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In Canada, see rule 10-906(9)

#39092 06/09/04 03:26 AM
Joined: Jan 2003
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It is up to you and the job specifications.


Bob Badger
Construction & Maintenance Electrician
Massachusetts
#39093 06/09/04 05:10 PM
Joined: Apr 2004
Posts: 349
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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


There are 10 types of people. Those who know binary, and those who don't.

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