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thegabrielles's avatar
thegabrielles
Explorer
Feb 10, 2023

Adding Second A/C to 50 Amp TT

Hi All!! My family are getting back into the RV scene after getting away for a few years. We purchased a 2022 Cruiser Aire 28RKS. This is a 32'-9" trailer with one slide that runs the length of the Kitchen and living area. The camper came with a single Dometic A/C in the living room that is ducted. We have only been out a few times but one of our trips it was pretty warm with no shade trees. The A/C didn't keep up very well and it was especially warm in the Bedroom. The RV came prewired for 50Amp so adding a second AC shouldn't be too complicated... except finding one. The specs on the ceiling where the wiring is state: 110-125Volt, 60Hz, and here is my problem 16Amps Maximum. I am struggling to find an AC that will meet the 16Amp minimum (especially on start-up). I am looking to add heat to that AC as well. I would appreciate any advice or point me in the right direction.

2022 F150 Powerboost Platinum (purchased Nov 2022, ordered May 2022)
2022 Cruiser Aire 28RKS Purchased Aug 2022
  • ScottG's avatar
    ScottG
    Nomad
    Feb 10, 2023
    All is good, you're just misinterpreting the requirements.
    To make a long story short, any 13.5K BTU AC will work fine (or probably a 15K for that matter) and your rig should be prewired for it. You'll need to verify whether you wan't or need a ducted AC model.
    I will have to respectfully disagree with my old friend Bud though. It is not imperative that the two AC's are on separate legs. With 50A (100A really) there's enough power to go around. Now if I was wiring it from the very beginning I would indeed "balance" the load but if yours is prewired, I would not worry about it. In fact, I think mine may be on the same leg but I don't remember.
  • enblethen's avatar
    enblethen
    Nomad
    Feb 10, 2023
    etrailer has one that is 11.2. Doesn't show startup.
    Make sure you connect the second A/C unit on opposite leg of 50-amp connection.
    In your post you say maximum in one place and minimum in another line!

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