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Old 06-30-2005, 06:58 PM
AZCivic AZCivic is offline
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Real Name: Brandon
Location: Phoenix, AZ
Hybrids: 1997 Civic HX
Posts: 878
Default Re: Best way to measure 12v electrical draw?

Quote:
Originally Posted by lakedude
If you can multiply by 12 a DC amp meter will do the job.

Power = ElectroMotive Force (EMF) times Current.

or

Watts = Volts times Amps

You already know you have (roughly) 12 volts so all you need is the amps.
Yeah, unfortunately I got the motor used and it came with no instructions, and there's nothing on the motor or control unit that says what the draw rating is. Looking at the above post however where it seems that such units for DC can cost around $100, it's not looking like there's a cheap ($20-30) device that does the same thing as an A/C Kill-A-Watt for 12v DC.

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