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Old 06-22-2014, 01:34 AM   #7
FW28z
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Brand: Thor Motor Coach
Model: 2011 Four Winds 28Z
State: Michigan
Posts: 1,273
THOR #531
The appliance outlets you speak of are 120VAC, not 12VDC. I am not sure if this is a matter of semantics or if you realize there are both 120VAC and 12VDC systems on board, which are mostly isolated one from the other.

Things like lights, fresh water pump, etc. are all 12VDC powered, but "appliance outlets" of the kind you describe - especially those on the GCFI - are 120VAC powered.

Most of the time, coaches are supplied with a generator as standard equipment, but an inverter and transfer switch are both options. So I don't know if you have either.

An inverter will convert 12VDC to 120VAC when you are boondocking. So you would need this option for your coach to run strictly on the 12VDC batteries yet supply power to the 120VAC appliance outlets. Do you know if your coach has an inverter?

The other option is a transfer switch. This is strictly a part of the generator system (has nothing to do with the inverter or 12VDC system). Normally, the coach has a 30A or 50A power cable. When you are on park power, you simply plug that cable to the park shorepower pedestal to get AC.

However, to use the generator (assuming you do not have a transfer switch), you must unplug the power cable from the park's shorepower pedestal and plug it into the generator (which is usually an outlet in the same compartment as where the shorepower cable goes into).

If you have a transfer switch (some are automatic and some are manual), you can "switch-over" from shorepower to generator power without having to unplug the power cable from park power and plug it into the RV's generator outlet.

A transfer switch then is simply a convenient option that alleviates you to unplug/plug your cable from one source to the other.

If you don't have the transfer-switch option, then you have to plug the coach into the generator receptacle on the coach.

I know this can be quite confusing, and it's often hard to visualize what you are trying to describe in this kind of forum.
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