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bighatnohorse's avatar
bighatnohorse
Explorer II
Jul 14, 2016

DC current pull from a 150 w inverter with 14 w load?

Here's the set up: A 150 watt inverter is being used to power a small 14 watt appliance. (The inverter is a Tripp Lite and claims a 90 percent efficiency.) How much 12 volt DC current will be requ...
bighatnohorse's avatar
bighatnohorse
Explorer II
Jul 15, 2016
red31 wrote:
15.6 watts in x .9 eff = 14 watts out = 120v x .116A

15.6 watts = 12v x 1.3A

@80% eff, 17.5 watts in, 12A x 1.46A


Very good! This will help with planning where a meter won't help.

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