I trying to control my turntable switch with Arduino. This is a toggle switch with 3 wires one wire is for CW rotation the other one is for CCW and the other cable is main with 240VAC. I am using this relay shield; from this shield I am using two relays with this this connection idea:
So basically one relay is controlling on/off and the other relay will control rotation in CW and CCW. For now I have tried this connection with two 12V LEDs and it's working fine. But now that I need to use my turntable, I think I should connect common of first relay with the main of 240V AC and I am not sure if I can do this or not (how safe it is).
What am I trying to achieve is better described here: Triple pole triple throw relay