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Tplat's avatar
Tplat
Explorer
Mar 19, 2021

Electrical Issues

Hi all my first post here because of issues. My brother has a Wilderness 5th wheel and it started having issues with power. Sometimes it will run fine but with out warning it will lose power. It will run fine off of a an external generator but will pop the fuse on a 20 amp plug in. Used to run fine off of the 20a plug in but it started doing this all of a sudden. It does not have a built in generator. Any kind of help woud be greatly appreciated.
  • BFL13 wrote:
    He has something running on 120v that he didn't before? Suspects:
    - WH on 120v instead of gas?
    - Fridge now on 120?
    - converter now working harder on 120v because batteries are now low and were full before?


    Fridge doesn`t work so using a 3.1cf mini fridge, soon going to get a compact fridge from Home Depot. This problem is new as of about 3 days ago, Got a new Intelli-Power converter about 3 maybe 4 years ago. As for the batteries their always at full and are only about 4 years old and tried to run it off of the bateries and it never would.
  • It`s plugged into 120 volt house plug in in the well house. If it pops that fuse even resetting it doesn`t work, nothing, the same with other plug in`s. Then the only other option is plugging it in to our generator. Was in the process up getting a 30 amp plug in and line ran to it then it started raining off on on then this fuse or power problem start. Not going to work on it in the rain but to me it seems like a trailer issue. Had 120 volt power all night and until about 4pm today it popped the well house fuse. It doesn`t matter what plug it will pop the fuse in it.
  • Exactly what "fuse" is popping? Very common for an RV to draw more than 20 amps. First set your water heater and fridge to propane only and see what happens.
  • He has something running on 120v that he didn't before? Suspects:
    - WH on 120v instead of gas?
    - Fridge now on 120?
    - converter now working harder on 120v because batteries are now low and were full before?
  • Your post is unclear to me.
    Rig operates on external genset and blows "fuse" when plugged in to where?
    Does it operate on internal genset? Fuses are normally on the 12 volt side and circuit breakers are used for 120 volts AC system.
    Does i have an automatic transfer switch?
    How often does it trip and what is being used.
    You could try turning off all circuit breakers in the rig and see if it trips.
  • IF it is only having Electrical issues when on a 20A outlet....suspect that 20A is GFCI protected and one of the heater elements

    Turn Off ALL Individual Circuit Breakers in the RV AC Power Panel
    Then plug in/reset that 20A Circuit Breaker
    If it Trips....turn off Both 50A CBs in RV AC Panel and try again
    If it trips...problem is Adapter(s), RV power Cord,

    If it Doesn't trip witn RV 50A CBs closed...close each Individual CBs One at a time until the 20A CB trips....then ID that circuit and check it for loose wiring/bad connections etc

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