Hi Everyone, new poster here. I was hoping to get some advice on the following: I have a two gang switch box that has two double pole switches in it. Each switch is on a different circuit (but each pole on the same switch is on the same circuit) and supplied with a 12/3 romex. Each double pole switch therefore has one line coming in and two loads going out (the white wire is being used as one of these so there is no neutral for either switch). These two 12/3 romexs are from a nearby accessible (unfinished basement) junction box with four romex 12/3 romexs coming in the neutrals for each set of two 12/3 romexs are pigtailed together and do not go up to the wall box. The lines are also pigtailed and then head up to the wall switch. The loads obviously go up separate. So what they've done is put two 12/3 romexs on a double pole switch by ditching the neutral and using the white wire as a load line above. I need to add one neutral to each switch (to add double pole smart switches to each). My question is, is there any problem with me simply running two sets of 12/4 or 12/2/2 romex instead of two sets of 12/3 up to the double gang wall switch and tying the neutral into the separate pigtailed neutrals that are now bypassing the switch? Therefore, the new wires would carry line, two loads, and a neutral (and ground) instead of just the line and two loads (one of which was on the white wire) and a ground. These are 15A circuits and 3 of the 4 switches are just powering lights. One is powering two switched outdoor GFCI outlets. As I said, each double pole switch is on it's own circuit. I appreciate very much anybody taking the time to weigh in. Please let me know if I haven't provided enough information or should clarify. Thank you.

I have a single pole switch with 4 lights, that I want to replace with a 3-way switch. Power currently runs to the switch. I don't have a way (without drilling a lot of holes, which is really not an option) to run 14/3 wire to the desired location for the 2nd switch. Is it possible to add the other 3-way switch to the end of the light run without rewiring all the lights with 14/3. What would that wiring scenario look like? If not feasible, what are my other options?