Hello all,
I'm adding an exhaust fan (powered by the existing lighting circuit) to a bathroom and want to change the single light switch to double switches for fan and light. Is there any reason not to replace the existing 14/2 cable running to the switch box with a 14/3 to control light and fan (code/safety/difficulty). It would be a lot easier to draw a single replacement cable up through the existing holes/cavity than running a second 14/2 down to the new double-gang box. (The wall switch is on the outside wall of a sauna, so the wall is stuffed with insulation.) Thanks for any advice.
Denny