12v inverter draw on batteries with microwave
If I get a 2000w inverter for my MH and use my 1100w microwave, what will be the draw off the house batteries? Using Ohm's Law I calculate about 9 amps draw at 120v. Then converting from 120v to 12...
Forum Discussion
As others have answered, yes you are correct:
- IF the 1100 watts you quoted is the input power of the microwave (not the output power).
- AND you use a pure sine wave inverter
If you use a modified sine wave inverter, the microwave will use less power (because there is less available per cycle) and hence take longer to achieve the same heating. It "could" also cause damage to the microwave.
I use four deep cycle batteries, charged only via solar, and we use the microwave (powered by a pure sine inverter) to reheat (or microwave popcorn) almost daily when out with the trailer.
Steve
- IF the 1100 watts you quoted is the input power of the microwave (not the output power).
- AND you use a pure sine wave inverter
If you use a modified sine wave inverter, the microwave will use less power (because there is less available per cycle) and hence take longer to achieve the same heating. It "could" also cause damage to the microwave.
I use four deep cycle batteries, charged only via solar, and we use the microwave (powered by a pure sine inverter) to reheat (or microwave popcorn) almost daily when out with the trailer.
Steve
