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running thwn wiring

Posted by mattyp (My Page) on
Tue, May 11, 10 at 9:56


I want to run 2 20amp circuits from my panel to an outside BBQ island. I have 3/4" pvc run underground outside to the island. It comes off the house in a junction box. My question is, Should I run romex from the panel to the junction box and then run thwn wire to the island or should I run thwn wire the entire way? Also, should there only be 4 thwn wires in the conduit for the 2 20amp breakers? 1 green, 1 white, 1 black and 1 red? Or should I run 2 black 2 green and 2 white?

Thanks for any help!!!

Follow-Up Postings:

RE: running thwn wiring

To run THWN the entire way, it must all be in conduit, so if there is no conduit from the panel to the jbox, use Romex, then THWN.

You can run 1 green for both circuits; the choice to run 1 or 2 white (neutrals) is yours. If you run 1, it becomes a multiwire circuit and the circuits must be placed on a double pole breaker. It is probably easier and less confusing for a DIYer to run 2 whites, one for each hot.

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