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Re: Dual Voltage (12v dc / 120v ac) Small Electric Water Hea
E350: Yes, you got the math right!
A few notes about the heat losses....
I had the thermostat cover off the whole time with a bare section of the tank exposed, ie no insulation. The factory fiberglass install job doesn't look all that great either; there is masking tape squishing the fiberglass around much of the heater diameter.
...and my wiring is burning up .9V so P=VI so P=.9V*25A=22W lost heating up wire.
So with larger wire, the thermostat cover in place and a water heater jacket installed, we could possibly shave 10-15 minutes off of the warm-up time....or just use a 600W element and MUCH larger wire.
Running the engine or connecting to shore power/charging will also speed things up since the batteries will be at 13.2V or more.
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2008 E350 RB passenger 4WD SMB penthouse
2013 KTM 350 EXC
2008 KTM 250 XCF-W
2003 Honda Element
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