Posted by John T on September 20, 2019 at 13:50:47 from (45.16.200.171):
In Reply to: Camper Solar posted by John M on September 20, 2019 at 13:13:30:
You say he wants to keep the park power?????????? If he's plugged into 120 VAC park power why wouldn't he use that ???? Why use the 12 VDC batteries plus an Inverter to manufacture 120 VAC when he already has 120 VAC ????
If he wants to use his house battery bank (NOT park power) to power a 120 VAC device he would need an INVERTER that uses 12 VDC batteries and Inverts it into 120 VAC. HOWEVER any high power heating device like hair dryer or coffee pot or microwave or heater WOULD DRAIN BATTERIES QUICK and its best not to draw them down over 50% of their capacity. For every amp of 120 VAC use he would draw around eleven amps out of his batteries,. If a 1500 watt 120 VAC appliance were used from battery and inverter power, that would draw like 138 amps out of his battery when running. YOURE TALKIN ONE HUGE BATTERY BANK AND A HUGE INVERTER
They make 12 VDC coffee makers why not use that ??????????????????
SURE anythings "possible" given huge enough battery banks and a huge Inverter and also a 120 VAC to 13/14+ VDC battery charger but this just is NOT very practical, NOT cost effective, and NOT very efficient
Further if he wants any of his RV outlets that are powered using his batteries and an Inverter he needs a safe and proper transfer method like a transfer switch or manually plug in and out.
This is just soooooooooooooo wrong in sooooooooooooo many ways Im not going to spend time educating him and explaining it all.........… If he is totally out to lunch on RV power and batteries and Inverters and transfer switches etc its best he hire a professional
John T RV owner of 49 years and frequent dry camp boondocker currently running with 1080 watts of solar (four rooftop panels),,,,,,,,,,,,Three AGM batteries in parallel for 520 Amp Hours,,,,,,,,,,,,,,,an MPPT Solar Charge Controller,,,,,,,,,,,a 2000 Watt Inverter,,,,,,,,,,,,an 80 Amp smart 3/4 stage Converter/Charger,,,,,,,,,,,,a 2800 Watt Cummins Onan Genset
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