Inverters

According to my book with my inverter, it is running at 90%...mine is 1500w

Stefan

Hi, Stefan
Yes, a lot of inverters do run at 90% efficiency, but generally at full output - I quoted the 80% as a general minimum.
Because some of the internal circuitry requires a fixed amount of power, though small, to run itself, this does not reduce at lower power outputs, being reflected in a bit lower efficiency at low outputs.
The bigger inverters don't require much more power to run the internal circuitry than low power inverters, and therefore usually result in a bit better efficiency than small inverters at full output.
Gerry

cool, learn something new everyday, I know squat about these things, just quoting from the book

Cheers Stefan

Sorry Gerry, I just realised that I sent the reply to myself, stupid newbie's!!!!!
Ian

I just could see the point in uprading to a larger unit if it would pull the guts out of the battery supply.