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389 Prewired for inverter?

Discussion in 'Peterbilt Forum' started by Mountain_Dweller, Jun 7, 2018.

  1. Jun 7, 2018 #1
    Mountain_Dweller

    Mountain_Dweller Bobtail Member

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    Oct 18, 2014
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    Good afternoon,

    I am getting ready to install a power inverter in a 2015 Pete 389 with the 58" flat sleeper, and just noticed a plug and heavy cable under the driver side front corner of the sleeper leading up behind the closet corner presumably to the control panel. Is this prewiring for an inverter?

    The label reads J361 SLPR POWER SUPPLY - (MFG1)


    Thanks!

    -Nate
     
    Mountain_Dweller, Jun 7, 2018
    Mountain_Dweller, Jun 7, 2018
    #1
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  3. Jun 7, 2018 #2
    tnevin225

    tnevin225 Road Train Member

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    No, that's just power for the sleeper. You will need to run cables directly to the batteries.
     
    tnevin225, Jun 7, 2018
    tnevin225, Jun 7, 2018
    #2
    magoo68 and Mountain_Dweller Thank this.
  4. Jun 11, 2018 #3
    GrapeApe

    GrapeApe Road Train Member

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    Jan 7, 2013
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    That is the main power/ground to the sleeper load center.

    We usually use these style fittings to go through the floor:
    https://www.amazon.com/Arlington-LPCG50-10-Electrical-Connector-10-Pack/dp/B00303FYKA

    They'll seal up and hold the wires nice and tight. Most places that sell electrical supplies have them is several sizes. Just make sure you use the correct size wire and put a fuse or breaker in the battery box. Also route and secure them well to keep them from rubbing.

    I'm going to throw this out there, just in case, follow the directions and run power and ground directly to the batteries. A year or so ago, I fixed a real mess when someone decided to ground his inverter to the sleeper floor. It overloaded and melted the factory ground and he's lucky the truck didn't burn to the ground. Inverters can draw some serious amperage.
     
    GrapeApe, Jun 11, 2018
    GrapeApe, Jun 11, 2018
    #3
    Mountain_Dweller Thanks this.
  5. Jun 13, 2018 #4
    Mountain_Dweller

    Mountain_Dweller Bobtail Member

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    Oct 18, 2014
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    Thanks for the replies! I am putting in a 1000w pure sine inverter to run a 600w microwave, what size fuse do you think should go at the battery?

    Best,

    Nathan
     
    Mountain_Dweller, Jun 13, 2018
    Mountain_Dweller, Jun 13, 2018
    #4
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