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EV Solar Products
2655 N. Highway 89
Chino Valley, AZ 86323
ph: 520-636-2201 fax: 520-636-1664
e-mail: info@evsolar.com




RV System Design Worksheet

This worksheet is designed to help you determine how much power you use in your RV. Once you have determined this number you can figure out how many panels it would take to produce that much power in a day. If you are planning on using AC appliances you will need an inverter, otherwise you will only be able to run those appliances when your generator is on. If you have any problems or questions please email or call.

To use this worksheet fill in how many hours a day you use each appliance. If your browser supports JavaScript then the rest will be automatically calculated for you by clicking on the "Calculate" button at the bottom. If you don't have a JavaScript capable browser you can print this form and calculate the rest manually.


12V DCAppliances Used Watts X Hrs/Day = WH/Day
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1) Total Watt Hours per Day.
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2) Divide line 1 by 12. This is the total amp hours per day from DC appliances.
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120V AC Appliances Used Watts X Hrs/Day = WH/Day
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3) Total Watt Hours per day.
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4) Multiply total watt hours per day by 1.2 to adjust for inverter loss.
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5) Divide line 1 by 12. This is the total amp hours per day from AC appliances.
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6) Add line 2 and 5. This is the total amp hours per day.
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Updated July 27, 2000