Isolated Ground question

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JJWalecka

JJWalecka

Senior Member
Location
New England
The scenario is such:

A net work of 10 awg conductors sharing a neutral is feeding three isolated receptacles for coiled power drops. One circuit for each isolated ground receptacles. A 10 awg grounding conductor is installed also to ground the metal boxes and raceway.

Would sharing a common isolated grounding conductor for all three isolated receptacles be a proper installation, or would all three need individual isolated grounds?

The prints do not spec. Design and build.

Thanks for any feedback.

Justin J. Walecka
 
If the EGC is for bonding the box, the raceway, and the receptacle than it isn't isolated. A true IG would only connect to the grounding means on the receptacle and continue back directly to either the service ground or the XO of a transformer. In that case you would require two grounds, one EGC for the box/conduit and the other IG for the device. The entire concept of isolated grounds has come and gone. They're really no more effective than an insulated EGC pulled with the circuit conductors.
 
triphase said:
Infinity sorry I think he said he had a seperate EG.
Click to expand...

You're right, he did say that he also had a EGC. I should have finished my coffee before answering. :lol:
 
I just did not want to step on ya I have not even had a cup yet........The way this am is goin may start with a beer :)
 
The isolated ground would be installed to the green screw, of the three orange receptacles, and continue through the raceway eventually to the isolated ground bar.

Or would three separated isolated grounds be connected to three individual orange receptacles


Infinity and Triphase thank you for your time and effort.

Justin J. Walecka
 
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