Quote:
Originally Posted by ashleyb4
I know that but you draw 5 amps and 13.8v which is 69 watts 69/230 = 0.3A
So you draw 0.3 amp on the 230v side
So 69watts
Please point where im wrong im not some idiot that reasearched this on the internet. Im a trainee electrican. Have passed my first year and cuurrently in my second at college. Had 4 destinctions and 2 credits for my 2330 last year and I was electrical apprentice of the year.
A
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As a rough guide yes, but this does not take into account how much power the power supply uses at idle or how efficient the power supply is and this would change for each different model, the best way would be to pull the load and use a dvm in the live wire to mearsure the current draw and then times that by the voltage to give you the exact power consumption
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