Using ohms law, if you have 208v (E) & .33amps (I), resistance (R) would be 630ohms. I wouldn't depend on a clamp on amp meter to accurately read .33amps but having said this, your clamp on may show something and if resistance is near 600ohms, it should be working. Watts = E*I, or in this case 68 watts
Ohms law doesnt add up with alternating current. Not your basic triangle chart anyways lot of other factors peak voltage ect.
Last edited by Core_d; 01-04-2013 at 08:53 PM.