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Thread: Power Cord

  1. #1
    Seasoned Camper dihtn1's Avatar
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    Power Cord

    How long is the standard 50 amp power cord on the 337? I have 2 30 amp extension cords-are these usable with the 50 amp setup?

    Thank you.

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    Long Hauler Paul & Deb's Avatar
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    Mine is 30 feet for my 337RLS. Should be the same for you.
    Paul "Poppy" and Deb Cervone
    2022 Imagine XLS 22MLE
    2021 Imagine XLS 17MKE - SOLD ; 2015 Grand Design Reflection 337RLS - SOLD
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    Site Team Second Chance's Avatar
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    I would not use 30 amp extensions on a 50 amp setup. The wire gauge in the 30 amp cords will be smaller than that in the 50 amp cord. You would also have to use an adapter and plug into the 30 amp outlet at the site. Resistance is a function of wire gauge and run length and resistance plus current equals heat. You run the risk of a melt-down or a fire - especially if you were to rig it that way and run a bunch of appliances (2 ACs, microwave, etc) and the same time.
    Last edited by Second Chance; 04-13-2015 at 10:34 AM. Reason: Word typed twice
    U.S. Army Retired
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    Seasoned Camper dihtn1's Avatar
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    Quote Originally Posted by Poppy's 5th Wheel View Post
    Mine is 30 feet for my 337RLS. Should be the same for you.
    Thanks Poppy. We should be picking it up on 4/25.

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    Seasoned Camper dihtn1's Avatar
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    Quote Originally Posted by Second Chance View Post
    I would not use 30 amp extensions on a 50 amp setup. The wire gauge in the 30 amp cords will be smaller than that in the 50 amp cord. You would also have to use an adapter and plug into the 30 amp outlet at the site. Resistance is a function of wire gauge and run length and resistance plus current equals heat. You run the risk of a melt-down or a fire - especially if you were to rig it that way and run a bunch of appliances (2 ACs, microwave, etc) and the same time.
    Thanks SC - that's what is was thinking but wanted to run it be those who have a 50 amp setup.

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    Site Sponsor Cate&Rob's Avatar
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    There seem to be two threads with this same name . . . one in the Solitude section and one in the Reflection section.
    As long as you plug into the 30 amp post receptacle and adapt to the 50 amp at the trailer, you will not overload the 30 amp cord. The cord is protected by the post breaker, but the trailer is limited to 30 amps (or less . . . If you have a really long cord). Plugging a 30A 120V cord into a 50A 240V receptacle is not possible.

    See this other thread for the 30A cord to 50A trailer connection adapter that you need.
    http://www.mygrandrv.com/for...742-Power-Cord

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  7. #7
    Setting Up Camp
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    Thanks Rob for the clarification, I was getting a little confused. We have been to several smaller, older campgrounds that only have 30 amp service so the 50 amp cord is an overkill. I planned to buy the cord with the 50 amp female and 30 amp male for those times. I only have one AC unit but I know you can overload a 30 amp without an AC on! Thanks for the information.

    Conntek 14436 35-Foot RV Power Cord RV 30 Amp Male Plug To 50 Amp Female

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