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Thread: Adding Coach batteries
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Old 08-25-2016, 10:36 PM   #20
Wrench
Junior Member
 
Brand: Thor Motor Coach
Model: Miramar 33.5
State: Texas
Posts: 9
THOR #5220
Converting AC Watts to DC Amps
The reasoning is that, say, the inverter draws 10 amps at 12 v = 120 watts. But if you take off some (20/120 or about 16%) for losses in the inverter, you get only get 100 watts of AC out. So for ease in doing the math just say DC amps (at 12v) = AC watts (at 120v) divided by 10.
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