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I am connecting a GFCI outlet and a light circuit to a 4 wire (Black, Red, Neutral, Ground) two gang box. The switch is on the right and the duplex GFCI is on the left (near kitchen sink). How do I connect these properly? I saw an example that connected the GFCI to an additional outlet with a 4 wire connection.

See: How do I install a GFCI receptacle with two hot wires and common neutral??

Would this wiring work for this situation?

Glorfindel
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Hendrik
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    Do you have an outlet controlled by the switch? or maybe the switch controls a garbage disposal? This could be a multi wire branch circuit (MWBC), not uncommon in kitchens. Is this a new install or are you replacing the outlet and/or switch? If replacing, hopefully you took pics BEFORE you took it apart, if so, please post them. – George Anderson Sep 23 '22 at 21:35
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    Is there another cable that goes to the light? Is this a new circuit or an old circuit? If these are the only wires in the box and it used to work, then you probably have black = incoming hot, red = outgoing switched hot, white = neutral. But if this is new, anything is possible. Does the light need to GFCI protected? Where is the light getting its neutral from? Pictures of your actual switch/receptacle box showing any existing wiring and a picture showing wiring at the light fixture would help. – manassehkatz-Moving 2 Codidact Sep 23 '22 at 21:37
  • The GFCI has warning tape covering a second set of terminals. Do not peel off the tape! Leave it alone and then read the instructions for how you attach 2 wires to the "Line" terminals. That will steer you clear of most mistakes in this area. – Harper - Reinstate Monica Sep 24 '22 at 03:58
  • Thanks for getting back to me. I have 4 wires. Black, Red, White, Ground coming into the box from the panel. For the light, I have 2 wire ( Balck, White, Ground) from the light switch to the light. – Hendrik Sep 25 '22 at 15:45

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