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Timeline for answer to Attach Smart Switches to Shared Neutral by ThreePhaseEel

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Jun 9, 2021 at 16:26 comment added manassehkatz-Moving 2 Codidact Almost. If it is really 6" (or even a few feet) between the boxes, then the conduit (smurf tube) solution makes a lot of sense. But what you do then is not put the cables through it, but rather get some individual wires (THHN - can't just shuck the cables to get wire for this purpose) to match all the necessary connections. If you do that, you can actually get just black & white & green, because you can use black in place of black & red - but label all the black pieces using colored electrical tape to make it clear what goes where in case you need to do any future repairs/changes.
Jun 9, 2021 at 15:05 comment added cw94706 Thanks! This makes sense to me. I just added some photos...is the only thing between me and proper wiring about six inches of smurf tube around the two cables going from the junction box to the switch box? (Which almost certainly isn't there, but might be if I could open up the wall...) Or is the fact that they have their own sheathing also a problem? Side note - the writing on the electrical panel indicates that there is an in-wall timer on both circuits. I replaced one in-wall timer with the smart switch you see. The single-pole switch was therefore not initially planned?
Jun 9, 2021 at 11:39 comment added ThreePhaseEel @user263983 see the Encore Wire NM specsheet for an example
Jun 9, 2021 at 11:28 comment added user263983 Pls provide a link, I never seen that.
Jun 9, 2021 at 1:23 comment added ThreePhaseEel @manassehkatz-Moving2Codidact -- thanks for the explanation, edited
Jun 9, 2021 at 1:23 history edited ThreePhaseEel CC BY-SA 4.0
as it turns out, there's a way to make it work with the existing wiring using 1 circuit
Jun 9, 2021 at 1:20 comment added ThreePhaseEel @user263983 -- /4 NM is a thing, albeit not /5
Jun 9, 2021 at 1:07 comment added user263983 Briefly, four wires need to be run close. Since that type of cable does not exist, some conduit should be used. Or 3 cables.
Jun 9, 2021 at 0:51 history answered ThreePhaseEel CC BY-SA 4.0