Thread: Tank heaters
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Old 10-11-2020, 01:34 PM   #20
whiterose
Seasoned Camper
 
Join Date: Mar 2016
Location: Flushing
Posts: 72
M.O.C. #18353
Tank heaters

I check mine with the Progressive Industries surge protector. When you flip the switches you will see the amp draw increase.
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2018 GMC Denali 3500 Duramax Dually
2019 Montana 3791RD
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