Power consumption

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  • #28811
    Ben
    Participant

    This may be an odd question, but what should the power consumption be for the axidraw? I run 2 routinely during the day but havent been turning them off at night. Would the idle consumption be enough to raise my energy bill by 40-50 dollars a month for 2 devices? I have had a consistently higher power bill since running them and this seems to be the only change. Would the draw be enough to warrant unplugging them when not in use?

    #28812
    Windell Oskay
    Keymaster

    The AxiDraw power supply is 9 V, 1.5 A, or 13.5 W, and usually uses less than that, but can also potentially use slightly more accounting for the inefficiency of the power supply. For two, figure maybe 30 W total? For a full month, 24 hours * 30 days = 720 hours, or 21600 watt-hours at 30 W, 21.6 kWh.

    Figuring $0.15 (US average) per kWh, I would estimate that two AxiDraws would together use about $3.25 per month in electricity, assuming that you leave the motors powered on all the time. (Use Extensions>AxiDraw Utilities>Disable XY Motors to disable an AxiDraw, and it will use much less energy.)

    I don’t think that this is enough to explain $40-$50 difference. On the other hand, if having them connected is (for example) related to your computer not sleeping, that kind of thing could cause a much larger difference in energy use.

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