I have a standard 30 amp 10 circuit manual generator transfer switch that I want to install. It’s pretty straight forward having a tail that you install to the service panel with a ground wire, a neutral wire, and corresponding circuit wire pairs for the ten circuits. Red to the breaker and black to the load side.
I have two, 150 amp Square D main service panels and the loads that I want to back up are split between them. My question is; Can I just splice onto the neutral and ground tails from the transfer switch and extend them up to both service panels or do I have to move the loads that I want to back up into one service panel?
Thanks for any input.