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Old 01-20-2020, 06:18 AM   #3
16ACE27
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,305
THOR #7035
Too simplified and inaccurate. Uses the 13K BTU AC drawing 18 amps as the main load of concern but completely ignores the fact that if supplied 120 VAC instead of the "100 VAC" the Air Conditioner's current draw will go down as it ids not a resistor, but a true load doing a specific amount of work which doesn't change. So as voltage goes down the drawn current has to go up to do the same work.

And although the AC may be running 75% of the time in the RV, the microwave, coffee pot, and other loads are not, so the RV will not be pulling 30 amps all day long as per his assumed example.

IMHO, the autotransformer sky will not be falling this year. This rumor has been around for years. There is a big long discussion on it over at IRV2/
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Ted & Melinda
2016 ACE 27.1
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2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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