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Old 09-06-2013, 12:58 AM   #1
Join Date: Aug 2013
Posts: 66
inverter and air conditioneer advice

My coach has a 160 amp alternator and 4each 4D batteries, I added a 2,500 watt inverter to make 120 volts, the inverter is in the rear engine compartment and connected directly to the 2 each 4D coach batteries with large battery cables about 3 1/2 feet long. I plug into this inverter when dry camping and using my solar aray, that way i can run the
Microwave without starting the generator (transfer switch switches power)
Can I while traveling run the inverter and power my roof air conditioneer which i have done for short intervals when stationary and connected to my solar panels, my thought is the 160 amp alternator will charge the batteries as they are depleted by the inverters load from the air conditioneer, my idea is to run a 120 volt line from he inverter directly to the air cond. breaker on the load side and turn off the breaker, or somehow connect the 120 volts from the inverter to the coach main electrical feed possibly with a second transfer switch to prevent back feeding into the inverter.
Thoughts please

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Old 09-06-2013, 01:22 AM   #2
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Join Date: Apr 2012
Posts: 1,414
NO!!!! 120V times 12 amp draw = 1440 watts. 1440 / 12v =120 ampers, so you will quickly deplete your batterys and burn out your alternator. Alternators are usually only good for 75 to 80% of rated output.
I suggest using your genny to run a/cs when driving.

Dave and Laura & two cats
02 Discovery with Accord toad
retired auto rv tech and teacher, wife rt nurse
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Old 09-06-2013, 01:46 PM   #3
Join Date: Aug 2013
Posts: 66
Thanks that was a very good answer, it was just a thought and apparently not one of my better ones.
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