Originally Posted by cardinal4fun
You can also look at your breaker pannel for the water heater breaker. If you have a gas/elect the elect rocker switch will be located on the outside of your unit. You will have to take the water heater door off to turn the switch on or off, also the switch will have a pin through it so you do not turn it on by mistake. The only way to switch from one to another is to turn one on and the other off. Its not an automatic thing. I will only run the elect if on 50 amps as the draw is really great. You can have both on at the same time.
That's not totally true . You can run both gas
And electric on 30 amp at the same time and the draw isn't
That much because.
the electric side is 110v
Gas side is 12 v