Need help again

[Lanie]

Do the tank heaters need 30 amp or can I get by with regular household current?
Lanie

[Grumpy]

Many are 12v so they run off the converter and a household plug would work.

[norty1]

Not sure in a class C. Maybe someone with one can advise. I wouldn't want to do any damage just before your trip.

[Lanie]

Thanks.

[Love To Travel 2]

In our 2018 Greyhawk 29MV they are 12 volt.

[jd99336]

Whether 12v or 120v, they would be a very low amp draw. I had an engine heater on my airplane (in the day) and it was way more substantial than the tank heaters yet only drew about 6 amps, so you are fine on 15-20 amp house circuit as long as you use an appropriately heavy extension cord. I keep my plugged to a 20 amp circuit all winter (I do winterize, but for keeping house batteries up) and it will even run the roof heat pump which I believe pulls around 13-14 amps during start up. I should check that I guess.