OK, 1 KW per HP; .5KW per 1/2 HP x 3 hrs = 1.5 KWHr.
Based on the resi rates here (NJ) .135 KWHr, we are talking a whopping amount of .20/day; $1.40 week; 6.02month$ 72.24/yr.
Clamp & average, or clamp with a 'min-max Fluke', or if it's really important....I have a clamp on KWHr recorder.
Angel....feel free to use my projected numbers, but...check your utility KWHr rates.
John
