Originally Posted by John Jones
I want to double check that I am checking the transfer switch properly. I pulled off the cover and measured 120V to ground on each of the black and red wires. The white and green are neutrals/ground and have 0 volts.
In my transfer switch there are two relays. On one end of the relays, they are mounted one over the other, are the inputs. One from the genie, one from shore power. If on genie, you should have 115+- 10% when you measure between either the black and the white or the red and the white. You can also measure to ground (green.) When on shore power it is the same but on the other relay.
On the other side of the relays are the outputs. These may be tied together. But the concept is the same. Red to white should be 115. Black to white, 115.
Just make sure you make measurements with either genie only on and shore cord disconnected or shore connected and genie off. If you have it on shore or genie, on output, then you need to check further. That may be a breaker panel (probably is) or the inverter. If you have 115 at the inverter then it should work or it's bad. Don't forget to try the reset procedure.