Electrical – Installing two outdoor receptacles using T LB pvc, How many ground wires

electricaloutdoorpvc

I am looking to put a general use swimming pool receptacle at my fence and then the dedicated pool receptacle by the pump, each on its own gfci circuit.

The general use would come first in the raceway. I originally thought I would have to branch off to the general use receptacle, and feed the dedicated pool circuit wires up to that receptacle and back down to a seperate pvc conduit and continue back to the swimming pool pump receptacle.

Is there anything wrong with using a T pvc LB, to split off? So at the T the tge neutral and hot for general use will go left, and the swimming pool pump circuit will run straight and head on its way to that receptacle.

If so, how would I run the ground wire? Would I need two seperate ground wires?

T LB

Running the trencher this weekend and trying to plan the dig currently.

Best Answer

That conduit body is not large enough to contain a splice. You'll have to either run two grounds, or find a different place to splice.

References:

  • National Electrical Code 2017 314.16(C)(2); Allows splices, taps, and devices in conduit bodies, but only if the volume is stamped on it and it's large enough.
  • National Electrical Code 2017 314.16(B); Says that the CB would have to be at least 11.25 cu.in. to have a splice. (4 pass through conductors + grounds = 5 fill units. 5 * 2.25 = 11.25).

At least that's how I interpret the code.

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