Copying a post I made on IC with some measurements of power consumption:
Quote:
So it seems the cold moved west, it was up to 8 today with very little wind so I went out and measured the current coming out of the Mean Well unit with various accessories turned on.
Cold idle: 10.9A
Warm idle: 9.9A
4000rpm: 10.0A
Radio low volume: 1.0A
Radio high volume: 1.5A
Running lights: 0.6A
Headlights: 6.8A (plus running lights)
Climate control fan low: 3.1A
Climate control fan high: 9.3A
A/C: ?? Added zero
Wipers: 3.6A at max speed
Rear defroster: 8.3A
I was unable to get the cooling fans in the front of the car to come on in the time I was measuring so I can't say what amperage the A/C or cooling fan will add, but from my testing I could run headlights, max wipers, max air conditioning, rear glass defroster and blast the radio (mine has a separate amp with a subwoofer so draw will be higher than yours) when the car is cold for a grand total of 41 amps, plus those fans up front. More realistic when driving for me would be around 22 amps at night with lights and radio, around ~290 watts or 1/3 of a HP electrical load, and 11-13 amps during the day (~160 watts / 0.2HP).
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I realize now I haven't measured power consumption from the caps with the car in ignition position 2 but without the engine firing.