User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 3 123 LastLast
Results 1 to 10 of 23
  1. #1
    New Member
    Join Date
    Sep 2015
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Help with 50 amp to 30 amp or 20 amp

    Hi All,

    Have a 337RLS and am confused about taking my 50 amp service down to say a 30 amp or even 20 amp service. So does one by an adapter and then that adapter sends 120 volts to each side of the 50 amp or only 1 side? If only 1 side, how do I know what side it goes to? I know I can't run AC on 20 amps but possibly could use 1 of the 2 AC units if 30 amps, but my guess is each AC is wired to each leg of the 50 amp service? Actually want to do this for hooking to house to get refrig cold before leaving on a short trip or possibly in future getting a generator that only puts out say a 120 V, 30 amp service, etc. Thanks in advance. Chuck

  2. #2
    Site Sponsor Cate&Rob's Avatar
    Join Date
    Jul 2014
    Posts
    8,880
    Mentioned
    85 Post(s)
    Tagged
    0 Thread(s)
    Hi Chuck,

    You have this figured out correctly. The adapter from the 50A 240V plug to 30A 120V, and even down to the 20A 120V, sends whatever power is available to both sides of the 50A cord. I have no problem running our single Atwood AC on the 20A service that I have at home.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  3. #3
    Site Sponsor
    Join Date
    Feb 2015
    Location
    Clarkston WA
    Posts
    365
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I have a 50 to 30 amp adapter that feeds both sides. I am able to do everything in our 320x on 30 amp except run both A/C.
    Becky, BoBo and Mike
    2015 Solitude 369RL
    2020 GMC 2500 Duramax
    Anderson Ultimate 5th wheel hitch

  4. #4
    Seasoned Camper Sirsea's Avatar
    Join Date
    Jan 2015
    Location
    Walkertown, NC
    Posts
    352
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    I have adapters for 50/30 amp and 30/20 amp and can run one A/C, TV and lights but no water heater or microwave with the A/C.
    Marvin & Marion
    2016 Reflection 303RLS
    2008 Ram 2500HD

    [SIGPIC][/SIGPIC]

  5. #5
    New Member
    Join Date
    Sep 2015
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Cate&Rob View Post
    Hi Chuck,

    You have this figured out correctly. The adapter from the 50A 240V plug to 30A 120V, and even down to the 20A 120V, sends whatever power is available to both sides of the 50A cord. I have no problem running our single Atwood AC on the 20A service that I have at home.

    Rob
    Thanks Rob. Appreciate the feedback. Glad to hear this.

  6. #6
    New Member
    Join Date
    Sep 2015
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by dirtclod View Post
    I have a 50 to 30 amp adapter that feeds both sides. I am able to do everything in our 320x on 30 amp except run both A/C.
    Thanks Dirtclod.

  7. #7
    New Member
    Join Date
    Sep 2015
    Posts
    4
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Sirsea View Post
    I have adapters for 50/30 amp and 30/20 amp and can run one A/C, TV and lights but no water heater or microwave with the A/C.
    Thanks Marvin and Marion.

  8. #8
    Site Sponsor John612's Avatar
    Join Date
    Mar 2015
    Location
    CA
    Posts
    694
    Blog Entries
    1
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Cate&Rob View Post
    Hi Chuck,

    You have this figured out correctly. The adapter from the 50A 240V plug to 30A 120V, and even down to the 20A 120V, sends whatever power is available to both sides of the 50A cord. I have no problem running our single Atwood AC on the 20A service that I have at home.

    Rob
    Rob - so I can use the 50/30 amp pigtail adapter sold at camping world etc?
    We rarely use our a/c and it would be nice to use the light weight 30 amp cord to connect to shore power instead of the heavier 60 amp cord.

    Thanks
    John
    John, Susan & Luke
    2015 Reflection 303 RLS #867
    Bakersfield, CA

  9. #9
    Site Sponsor Cate&Rob's Avatar
    Join Date
    Jul 2014
    Posts
    8,880
    Mentioned
    85 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by John612 View Post
    Rob - so I can use the 50/30 amp pigtail adapter sold at camping world etc?
    We rarely use our a/c and it would be nice to use the light weight 30 amp cord to connect to shore power instead of the heavier 60 amp cord.

    Thanks
    John
    John,

    Yes, you can do exactly that. What you need is the adapter that goes from 50A twist lock to 30A male 3 prong plug. Then you can run your 30A cord over to the post. We do this quite often.

    If you plan to use an external 50A surge protector with the 30A cord, this needs another, less common, adapter. If you plan on this, let me know and I will explain further.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  10. #10
    Site Sponsor John612's Avatar
    Join Date
    Mar 2015
    Location
    CA
    Posts
    694
    Blog Entries
    1
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Yes we always use the external 50A surge protector.
    Assuming if I drop to 30A then I will have to buy a 30 amp surge protector,
    or buy a 30 back to 50 adapter and plug into the 50 amp socket?
    John, Susan & Luke
    2015 Reflection 303 RLS #867
    Bakersfield, CA

Page 1 of 3 123 LastLast

Similar Threads

  1. Replies: 16
    Last Post: 03-30-2018, 09:51 AM
  2. Replies: 3
    Last Post: 01-26-2018, 08:53 AM
  3. Replies: 4
    Last Post: 07-11-2015, 10:05 PM
  4. Hitch help B&W OEM Companion.
    By rhoag388 in forum General Discussion
    Replies: 4
    Last Post: 04-13-2015, 10:20 AM
  5. Determining your amp usage when plugged into 30 amp or 50 amp service.
    By KICKNBACK in forum Electrical System and Wiring
    Replies: 4
    Last Post: 09-23-2014, 07:46 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

DISCLAIMER:This website is not affiliated with or endorsed by Grand Design RV, LLC or any of its affiliates. This is an independent site.