RV 50 AMP Adapter (2) 30 AMP to 50 AMP – $30. Posted in Accessories, RV's & Motorhomes Share: XFacebookPinterestLinkedin Used, in good condition. Don’t need it anymore. Plug into two 30 AMP stations to power your 50 AMP RV For more info, contact: Ed Benesch @ 830-515-7505 voice or text Cash Only