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Old 07-05-2019, 01:31 AM   #76
Squerly
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Brand: Still Looking
Model: Newmar London Aire
State: North Carolina
Posts: 451
THOR #14340
Today I wired in a switch that will allow more control over how my coach’s charger/inverter works. I didn’t know when I bought it, but the inverter has to be turned on for shore power to flow through to the coach. That sucks, so I wired in a multi position switch that, among other things, provides power to the coach regardless of whether the inverter is turned on or off.

Depending on the position of the switch, I can do the following.
  • Provide shore power to the coach, bypassing the inverter/charger completely. This is the normal configuration for any coach without an inverter, and as such, the coach's stock charger will need to be in the “on” position in order to keep the house batteries charged.
  • Provide shore power to the coach while using the inverter’s battery charger to keep the house batteries charged. With the switch in this position the inverter does not supply power to the coach if the shore power is terminated. I favor this setting for storage as I usually have the air conditioning running and I don’t want the inverter to come on during a power failure. The inverter would terminate via overload anyway. So, with this setting, the air conditioner(s) come back on when the power comes back on.
  • Provide shore power to the coach while using the inverter’s battery charger to keep the house batteries charged and have the inverter automatically provide power to the coach if shore power is terminated.
While there is no perfect solution for every situation, I believe that one or the other of these settings is right for just about any situation I will find myself in. And choosing a solution is now as easy as clicking a switch.

Here is the switch I used. It’s currently $29.00 on Amazon and is a very robust switch. As expected of most Chinese stuff, the directions were non-existent. Fortunately, another Amazon purchaser was nice enough to write some instruction and put them in his review. I’ll have to buy him a beer someday because this thing would have been next to impossible without his help.
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Owners of Deer Springs RV Park
2-GSD's (Rex & Ryker)
Newmar London Aire 4519
2016 Jeep Rubicon Hard Rock edition
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