Max is, of course correct, an amp meter would give you a fair approximation but you really need a wat hour meter. I'm sure they can be bought, I'll look around, maybe there is one with a serial port to hook to a computer.
Tom
Max is, of course correct, an amp meter would give you a fair approximation but you really need a wat hour meter. I'm sure they can be bought, I'll look around, maybe there is one with a serial port to hook to a computer.
Tom