I am running 14-2 wire from a 15 amp circuit. I want to use 3 dimmer switches for 4 lights on each. Can I split or connect 3 wires in a junction box to each dimmer switch from the main wire? I am only using LED lights.

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    Are these dimmers at the same location, or physically separated? – ThreePhaseEel Sep 17 '19 at 11:39
  • They are physically separated – Roger Sep 17 '19 at 22:45

Yes, you can do this. The 14/2, with a ground, would be run into your 3 gang box. The black hot would be connected to the three black dimmer switch wires using a wire nut or appropriate connector. Then the load wires from the switches would be hooked up to the appropriate black wires from the lights. The white wires, neutrals,from the lights would all be connected to the white wire from the feed. The ground wires from the lights would be connected to the ground wire from the feed and from the ground wires from the switches. Good luck.

Since the dimmers are separated, run a 14/2 with a ground to the second and third switch box. In the first switch box connect the black feed in with the black feed out with the dimmer hot, connect the white wires together, connect the light load to the dimmer and connect the grounds. Wire the second box the same way. The third box connect black feed to dimmer, white neutrals together, light load to dimmer and connect grounds.

  • You do need to make sure the box is big enough for the number of wires & devices (do a box fill calculation, and check against the number of cubic inches that the box is.) That will be different if the junction box is separate from the dimmer locations .vs. if they are all in one big box. – Ecnerwal Sep 17 '19 at 13:22
  • The junction box must be accessible, it cannot be hidden behind a wall. – kgc Sep 18 '19 at 12:14

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