I have a pre-existing 15A light switch upstairs in a 3-gang switch box that is connected to outlets in the basement. I want to avoid having to tear the light switch box out of the wall to run a new 20A circuit to the outlets, but I still need to be able to use a switch to turn them on/off. The basement is unfinished, so I have plenty of access down there, plus the circuit panel that I will be running the new 20A circuit from.
How can I go about keeping the existing 15A switch, but have it turn on the outlets on the 20A circuit? I assume some kind of relay or similar? The switch runs to a juction box in the basement that I can use to do the relay. I have only done standard house wiring up to this point, nothing fancy. My original intention was to snake a new line from the 20A circuit up to the switch box and install a new 20A rated switch, but the house was built in the 60's and the wire I would need to replace goes out the top of the box, so would be nearly impossible to get the new wire in without having to redo the whole switch box.
How can I go about keeping the existing 15A switch, but have it turn on the outlets on the 20A circuit? I assume some kind of relay or similar? The switch runs to a juction box in the basement that I can use to do the relay. I have only done standard house wiring up to this point, nothing fancy. My original intention was to snake a new line from the 20A circuit up to the switch box and install a new 20A rated switch, but the house was built in the 60's and the wire I would need to replace goes out the top of the box, so would be nearly impossible to get the new wire in without having to redo the whole switch box.