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Eduardo333's avatar
Eduardo333
Explorer
May 30, 2017

Unknown power use by my fifth wheel.

We just purchased a Montana 2004. Currently someone is staying in it. My entire electrical is off-grid. I have the 5th Wheel plugged into my inverter. I have discovered that it is using about 160 watts of power continuously, even when everything is turned off. Also the refrigerator is set to just use the propane. I found the converter and unplugged it. Anyone have a guess where it is using the power?

35 Replies

  • BB_TX wrote:
    Do you have a microwave, refrigerator, television, sound system, satellite system, radio, clock, propane detector, etc? All these use some power even when turned off unless you actually unplug them.


    Yes, for those things 12V DC battery power is discharging, and the fridge when running on gas too.

    And how are you going to recharge the 5er's battery with the converter disconnected?
  • Do you have a microwave, refrigerator, television, sound system, satellite system, radio, clock, propane detector, etc? All these use some power even when turned off unless you actually unplug them.
  • Eduardo333 wrote:
    I have the 5th Wheel plugged into my inverter. I have discovered that it is using about 160 watts of power continuously, even when everything is turned off. Also the refrigerator is set to just use the propane.


    Never is "everything is turned off" as there are several sources of parasitic draw, including the radio memory circuit, antenna wall plate if it's left on, propane detector which is hard wired to run 24/7, and of course you do realize the fridge even though it's running on gas does require 12 vdc to operate? Your fridge also probably has a climate control heating element - have you turned it off? The inverter itself also contributes to draw down on the battery, even at idle ... and how you you know it's "using about 160 watts of power continuously"?
  • Our radio was using over 100 watts turned off and by unplugging it most of my stray power went away. Try turning off one breaker at a time until your find the source.
  • I would say hot water but that'd be a lot more than 160. So, the 160 watts.. that's what the inverter is providing?

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