RV Power Worksheet
Print this page and then work your way to the bottom. Try to visualize the number of appliances you will run on a typical
24 hour period,
then multiply that by the number of hours per day to give you the number of total amps used per day.
Amps x Quantity x Hours per Day = Total Amps Per Day
| 12 volt Appliances |
Amps |
Quantity |
Hours Per Day |
= Total Amps Per Day |
| Incandescent Lights |
1.5 |
|
|
|
| Water Pump |
4 |
|
|
|
| 12 volt Television |
3 |
|
|
|
| Bathroom Fan |
4 |
|
|
|
| Furnace |
8 |
|
|
|
| 12 volt Stereo |
0.8 |
|
|
|
| Propane Detector |
0.2 |
|
|
|
| Refrigerator Circuit Board |
0.4 |
|
|
|
| 120 volt AC Appliances - Using Inverter |
Amps |
Quantity |
Hours Per Day |
= Total Amps |
| Television |
5 |
|
|
|
| VCR / DVD Player |
4 |
|
|
|
| Microwave |
100 |
|
|
|
| Toaster |
65 |
|
|
|
| Coffee Maker |
60 |
|
|
|
| Laptop Computer |
5 |
|
|
|
| Desktop Computer |
15 |
|
|
|
| |
|
|
Total Amps/Day |
|
Battery Bank Capacity (Approximate) AH = Amp Hours
Group 24 (12 Volt) = 85AH/ea
Group 27 (12 Volt) = 100AH/ea
Group 29 (12 Volt) = 115AH/ea
6 Volt (2 Batteries) = 220AH/Pair |
Solar Panel Power Replacement (Approximate)
80 Watt Panel = 28 Amps/Day (Per Panel)
100 Watt Panel = 38 Amps/Day (Per Panel)
110 Watt Panel = 40 Amps/Day (Per Panel)
140 Watt Panel = 45 Amps/Day (Per Panel) |
Example:
| Joe is using 60 Amps per day, and wants to camp for 1 week. His RV has two 6 Volt batteries (220AH)
but Joe will need approximately 420 Amps of power to get through a 7 day week (60A per day).
If Joe buys a 100 watt solar panel replacing about 38A per day, Joe's net Amp usage
now becomes 22A per day. Over 1 week, Joe will now use a net of 154 Amps,
so with 220AH of battery power, he has enough power for his trip. |
|