Egc question

[Qojoe]

Hey, i have a scenario where i am running multiple circuits in pvc to FS boxes for temp power. In the house we have 10 homeruns coming from the panel to a 6x6 pull box then from there we are piped outside to the fs boxes. My question is this, being a temporary install and to avoid pulling 9 additional wires through the pipe can i run 1 egc through the pvc to the pull box for my outlets? Or should i pull a seperate ground for each outlet

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[jumper]

Multiple circuits in the same raceway may share one EGC based on the largest circuit's OCPD. 250.122(C).

 

[Dale001289]

Hey, i have a scenario where i am running multiple circuits in pvc to FS boxes for temp power. In the house we have 10 homeruns coming from the panel to a 6x6 pull box then from there we are piped outside to the fs boxes. My question is this, being a temporary install and to avoid pulling 9 additional wires through the pipe can i run 1 egc through the pvc to the pull box for my outlets? Or should i pull a seperate ground for each outlet

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Never worked a commercial job, but if all circuits originate from the same panelboard, one grounding conductor (EGC) should be ok. Also, Temporary wiring is still subject to NEC.

 

[Qojoe]

Thanks for the fast response. I aprreciate it

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[jumper]

Never worked a commercial job, but if all circuits originate from the same panelboard, one grounding conductor (EGC) should be ok. Also, Temporary wiring is still subject to NEC.

Circuits need not originate in the same panel, but all circuits will require a pathway back to their originating source.

 

[Dale001289]

A single EGC from multiple panels for all circuits- doesn't make sense. Fault path needs to be back to the same ground buss if mutiple Circuit Breakers are used.

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[jumper]

A single EGC from multiple panels for all circuits- doesn't make sense. Fault path needs to be back to the same ground buss if mutiple Circuit Breakers are used.

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Lemme clarify my point.

3 20A ckts, 1#12 EGC from panel 1 to box A.

3 20A ckts, 1 #12 EGC from panel 2 to box A.

All 6 20A circuits 1 #12 EGC from box A to box B

 

[jumper]

Lemme clarify my point.

3 20A ckts, 1#12 EGC from panel 1 to box A.

3 20A ckts, 1 #12 EGC from panel 2 to box A.

All 6 20A circuits 1 #12 EGC from box A to box B

Another example.

3 20A 120V ckts, 1#12 EGC from panel 1 to box A.

3 30A 277V ckts, 1 #10 EGC from panel 2 to box A.

All 6 circuits, 20A 120V and 30A 277V, 1 #10 EGC from box A to box B.

 

[Dale001289]

Another example.

3 20A 120V ckts, 1#12 EGC from panel 1 to box A.

3 30A 277V ckts, 1 #10 EGC from panel 2 to box A.

All 6 circuits, 20A 120V and 30A 277V, 1 #10 EGC from box A to box B.

We are in agreement.