I am wiring a new screened in porch to include a receptacle, ceiling fan and 2 light fixtures. I am tapping into an existing 20A circuit. The starting point is 12/2 coming into a 3 gang box. The physical layout is
3 gang box -> light 1 -> [[(receptacle) -> fan -> 2 gang box -> light 2]]
In other words, the 3 gang box contains switches for the ceiling fan (regular on/off switch) and two 3-way switches for the two lights. From this box, one of the lights (light 1) is connected with 12/2. The rest go through 3/4 PVC conduit outside into the screened in porch. The receptacle is un-switched.
First on this conduit run is the un-switched receptacle. Next comes the fan. At the other end of the porch is a 2 gang box with 3 way switches for the two lights (so I can turn them on from inside or outside). After this 2 gang box we end the run with the last light.
Since I am in conduit is it legal to do this (all 12g wire):
- 1 Hot (un-switched) to receptacle
- 1 Hot (switched) to fan
- 4 travelers between the 2 2-way switches in each box
- 1 switched hot from 2 gang box back to light1
- 1 switched hot from 2 gang box to light2
- 1 neutral that connects to receptacle/fan/light
- 1 ground that connects to receptacle/fan/light.
This needs to pass inspection since it all falls under a building permit. My main question is the neutral - Do I need to run dedicated neutral wires for the receptacle, fan and light through the conduit? Or can I have them "share" one? I heard a rule that "each hot must have a neutral" but that that it didn't apply with conduit?