I have 4 tanks in my 2018 Rockwood 2606WS, which has an empty spot on the control panel for "Tank Heater". Each of the Ultraheat 40 gallon pads draws 10 amps. I'd not think that any switch could carry that much load, so Rockwood must use a relay? Yes? No?
Where do you buy the switch?
Where do you buy the relay?
There are a lot of switches that can carry more than 10 amps. Especially when it's a resistive load, which heating blankets are. However if you gang all 4 together, then you're getting into specialized switches or relay territory.
If the control panel just has one switch of the heating system, then it will have a relay (or at least space) somewhere
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