2002 Dutchman Captiva 249QRB

UPDATE....... That is the 120v switch for the hot water. Today I went out to camper and was determined to figure it out. There was a 15 amp breaker that was triped. Reset it, turned light switch on and in 20 minutes the water was warming.
Thanks

Can someone explain how the gas/electric hot water heater normally switch between gas and electric. Atwood GCAA 9E

The wires go through the floor, under the sink.
I know there hooked to something because, when I bought the tt from previous owners they had it plpowered by a 12ga extension cord. With the a/c running fan on high, when I tried the switch the fan speed would slow. So something was pulling power.

I thought it might be the hot water heater but by just flipping the switch the water doesn’t get hot.

If I turn on the switch labeled hot water it gets heated by gas.
Maybe I just don’t know how to get it to heat by electricity, and it is a hot water electric switch.

Outside outlet? Can you see the wiring from inside the cabinets?

I thought it might be the hot water heater also. But I don’t think it is.

Water heater?

If you provide the make, model, & year of your trailer someone may be able to answer your question. They are all different.

Woops, I should have reread the title of your post. Hope you get the answer.