14/3 romex in conduit

Old 10-16-15, 03:23 PM
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14/3 romex in conduit

Is ok to run 14/3 romex inside 1 1/2 schedule 40 with the 6 gauge wire that is powering my sub panel in the garage. I want to be able to turn the light on/off above the garage door from inside the house. It is about a 60 foot run from the switch to the light. OR do I have to run different wire.
Old 10-16-15, 05:08 PM
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It can be done IF you use type UF cable but absolutely not if you want to use type NM cable. It is always best to use individual conductors in conduit.

For the three-way switching circuit I would recommend two #14 conductors of one color and one #14 conductor of a different color. Do not use white, grey or green (including green with any color stripe) and protect the circuit with a 15 ampere circuit breaker at the garage. Conductor insulation to be type THWN or THHN/THWN.
Old 10-17-15, 03:41 PM
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Do I understand correctly that you propose to run wiring for a three-way circuit to control a light in the same 1-1/2" Sched. 40 conduit with #6 feeders to your sub-panel?
Old 10-19-15, 07:07 AM
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Yes it's allowed as long as the breaker powering the circuit is in the outbuilding so that throwing the outbuilding feeder breaker will de-energize all of the wires in the conduit.

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