power drain question

[LDB]

I've got a 400w inverter that plugs into a 12v outlet. I've got a personal heater that's 200w and a 110v plug. If I power that with the 400w inverter what is the battery drain? Thanks.

 

[greg334]

p/e=i ... seen that before Leo?

So with 200 watts, and '12' volts, you are drawing 16.6 amps - 200/12=16.66666. NOT including the loss from the inverter.