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Old 08-08-2015, 12:42 PM   #11
Senior Member
Join Date: May 2012
Posts: 357
To use a satellite system, you need to figure out how much power the system will draw each hour. Check the labels on the TV, Satellite receiver, and any other AC powered devices you need as part of the system to determine their power consumption in watts. Add them up and divide by 10 (use 10 instead of 12 to account for conversion losses) to determine the 12V amps you'll use each hour. Sum your (12V house) battery capacity in amp/hours, device it by the amps used each hour, divide this result by 2 to account for not drawing down the batteries below 50% and you'll be able to calculate how long the batteries will run the satellite equipment. Of course, this doesn't include any other uses of power by the RV. It's reasonable to assume that your RV will draw at least 2A/hour from the 12V house batteries at all times. This provides power for the fridge, propane detector, device computers, and possibly a propane disconnect solenoid wired to the propane detector.


pmsherman is offline   Reply With Quote

power, satellite

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