30 amp or 50 amp Shore Power

Discussion in 'Electrical Stuff' started by SLS, Feb 9, 2020.

  1. SLS

    SLS New Member

    Feb 9, 2020
    290 SunSport 2007
    Twin 350 Mercruisers w/Bravo III drives
    Hi All,

    Moving off a mooring to a slip for the first time with my 2007 SunSport 290. Does anyone know if I should be connecting to shore power with 30 am for 50 amp? Have 120v breaker.

    This stuff is mostly foreign language to me.


  2. superwa

    superwa Active Member GOLD Sponsor

    Jul 27, 2013
    Rhode Island
    2001 Sea Ray Sundancer 380
    Mercruiser horizon 8.1S
    Do you know what shore line cables came with the boat? You may have a couple of 30A ones that would connect to two 30A receptacles.
  3. Express 390

    Express 390 Active Member GOLD Sponsor

    Sep 14, 2018
    South Shore of Long Island NY
    1986 SeaRay 390 EC
    1993 SeaRay 290 DA single 7.4 /Bravo 2
    1992 SeaRay 230 DA 4.3LX Alfa drive
    Twin 454 Crusaders inboards 4 blades
    I would also think30 amp cords
  4. SLS

    SLS New Member

    Feb 9, 2020
    290 SunSport 2007
    Twin 350 Mercruisers w/Bravo III drives
    Thank you.

    I have no idea what came with the boat -- but the marina provides cables.
  5. Sublimetime

    Sublimetime Active Member

    Oct 22, 2007
    clifton nj
    420 da
    The 30 amp and 50 amp cords have different ends on them, so you are going to use whichever fits in the receptacle that you have on the boat now. My bet would be 30 amp. I would be shocked if it was a 50 amp. That would be overkill for that boat.
    RBB and Chris-380 like this.
  6. Boat Guy

    Boat Guy Well-Known Member

    I would be very surprised if a vessel of your size would be 50A. I believe you can find the manual on searay.com or simply contact them. But, my best guess would be 30A.
  7. ENstig8or

    ENstig8or Active Member GOLD Sponsor

    Jun 4, 2013
    New Jersey
    2003 Sea Ray 450 Express Bridge.....

    2016 Sea Ray 21 SPX BR
    Cummins 480CE (450)
    Mercruiser 4.3L (21 SPX)
    My old 310 Sundancer had 1 30A. I would imagine that is what you have.
  8. DWABoat

    DWABoat Active Member

    Aug 13, 2019
    S Louisiana
    2001 280 Sundancer
    1989 220CC Cuddy Cabin
    Twin 4.3 w/Alpha Ones
    5.7 Mercruiser Alpha One
    My 280 has a single 30 amp.
  9. spikedaddy99

    spikedaddy99 Well-Known Member GOLD Sponsor

    Jun 11, 2008
    Prentice, Wi
    2005 500 DB
    Can you get a look at the plug ends? As others have said, almost guaranteed to be 30amp.
  10. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    In most cases the 30A has 3 blades and the 50A had 4 blades

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