Need help with Mystery Switch in 1988 Limited

[Cantrell]

Hey guys,
Have a 1988 34' limited with a 120v switch inside the cabinet above the stove (next to the door) that I have no idea what it controls. Nothing seems to not work when it is off--a complete mystery.
It has one (looks like #10) wire coming out of the bottom of the box and two (#10) wires coming out of the center of the box. I can see this by removing the hood vent screen. The three wires disappear into a hole in the interior aluminum and it appears to be original since the hole in the aluminum has one of those plastic 'protectors' that match the rest in the trailer.
Any ideas?
Thanks,
Bill

[Mike Leary]

Ours has a switch that enables you to run the microwave or roof air.

[willyd]

I agree with Mike - we have the same switch that enables either the ac or micriwave, but mine is over the sink. Take Care

[Cantrell]

Thank you both. I guess I need to get inside the box to see if it has power because it has no effect on either the microwave or the A/C unit.
Begs the question--why would you need another switch to control power to the A/C or the microwave?
Bill

[Mike Leary]

Originally Posted by Cantrell

Begs the question--why would you need another switch to control power to the A/C or the microwave? Bill

They both take a ton of juice and cannot be run at the same time, hence the switch.

[Forrest]

The switch is to prevent overloading the circuit breaker by running the A/C and Microwave at the same time. Singly there's no problem, but together they might draw more than 30 amps. If your switch doesn't close the circuit to one or the other it might be because a previous owner bypassed it, or perhaps your breaker box and shore line have been upgraded to 50 amp?

[Shacksman]

If you have the original microwave and AC it will limit the use to one or the other, so you won't blow a fuse. It may well have been changed over the years.

[Mike Leary]

Originally Posted by Shacksman

If you have the original microwave and AC it will limit the use to one or the other, so you won't blow a fuse. It may well have been changed over the years.

I don't get it; how is that possible? I thought all coaches came with the switch.

[Shacksman]

Originally Posted by Mike Leary

I don't get it; how is that possible? I thought all coaches came with the switch.

Changed by a previous owner not Airstream. Anything is possible from a previous owner.