Why Do Boat Builders Put In 50 Amp Power Under 50 LOA?

Discussion in 'Electrical Stuff' started by MonacoMike, Sep 20, 2021.

  1. MonacoMike

    MonacoMike Well-Known Member

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    8.2 Mercs
    85 Sea Ray Monaco 197
    260hp Alpha 1
    The cords and everything are so heavy and expensive why would anything under 50 feet not just run twin 30 amp?
     
  2. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    mine is twin 30's... I often wish I had a single 50 though at times.
     
  3. Woody

    Woody Well-Known Member

    Nov 20, 2007
    N. Wisconsin/Lk Superior
    2005 420DA
    Cummins 6CTA8.3
    I run mine off one 30 split at the stern to two.
     
  4. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    Never short on power?
     
  5. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    1998 450 Sundancer, Achilles dinghy w/15hp
    3126 Cat's
    I like my 240v 50a cable especially with it connected to my cablemaster !!!
     
    RBB, jjcllc328, dtfeld and 4 others like this.
  6. MonacoMike

    MonacoMike Well-Known Member

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    8.2 Mercs
    85 Sea Ray Monaco 197
    260hp Alpha 1
    Because of Marina pedestal power available or because you wish you had the big 50 amp cord instead of twin 30 amp cords?
     
  7. MonacoMike

    MonacoMike Well-Known Member

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    8.2 Mercs
    85 Sea Ray Monaco 197
    260hp Alpha 1
    What is great about that?
     
  8. MonacoMike

    MonacoMike Well-Known Member

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    8.2 Mercs
    85 Sea Ray Monaco 197
    260hp Alpha 1
    How many AC units?
     
  9. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    Just dealing with the tangled mess in the transom locker
     
  10. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    1998 450 Sundancer, Achilles dinghy w/15hp
    3126 Cat's
    Shaps likes this.
  11. MonacoMike

    MonacoMike Well-Known Member

    Sep 15, 2009
    Indiana lakes and Lake Michigan
    2000 Cruisers 3870
    8.2 Mercs
    85 Sea Ray Monaco 197
    260hp Alpha 1
    Hi have twin 25 foot gray cords that are permanently attached to the boat, even in my home port. Then I have home port cords that are permanently installed for the season and I have a pair of clean white travel cords that are neatly coiled in a tote in the transom.

    All in all fairly quick and easy to get set up. And helping friends with the 50 amp cords they seem very heavy and unruly.
     
  12. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    1998 450 Sundancer, Achilles dinghy w/15hp
    3126 Cat's
    My wife has never complained.... ;-)
     
    dtfeld and blaster like this.
  13. Blueone

    Blueone Well-Known Member SILVER Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    Yes I have a 50 permanent to the dock about 60’ long as we bow in the slip.
    The two 30’s on the boat are 50’…I have to go thru a 4” hole in the transom. Most places we transient is anywhere from 10-20’ away. The hole is the problem because you pull from one side and coil from the other side. The cords don’t want to cooperate…. End of a weekend I don’t want to fight so they get their way
     
  14. Woody

    Woody Well-Known Member

    Nov 20, 2007
    N. Wisconsin/Lk Superior
    2005 420DA
    Cummins 6CTA8.3
    I've got two AC units, haven't run out of power yet. I have the end of the splitter hanging out of the 4" hole. I always just unhook the cord there, coil it, tie it with a velcro thingy and then put in the trunk. Cords are left at home slip, just grab the one end and hook to the splitter. For transient use I carry two 50' and one 25'.
     
  15. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    Mine came from the factory with twin 30's that I had to upgrade to a 50. Kept burning out the plugs on the cord ends.
    I travel with twin 50's. That the boat came with twin 30's makes no sense since the panel has twin 50 amp breakers and was outfitted with a 50amp 220v generator from the factory.

    EDIT: But the current draw of the boat determines what it needs to be fed with. If you have two 50 amp mains then you need 50A 220v. Does not matter if you don't turn all the breakers on and don't use but 30 amps. You still need to supply the boat with what it is rated for. Yes for the one time you decide to turn everything on ...
     
    Last edited: Sep 20, 2021
  16. firecadet613

    firecadet613 Well-Known Member

    May 10, 2007
    Indiana
    2007 Four Winns V358
    Twin VP 5.7GXi V-Drive / ZF63s
    Could a previous owner have swapped it to 30a inlets?
     
  17. Strecker25

    Strecker25 Well-Known Member PLATINUM Sponsor

    Nov 20, 2014
    Rochester, NY
    2002 410DA
    Caterpillar 350HP 3126
    I run a single 30a 120v split to two 30a inlets. We monitor draw and have only tripped the breaker once when my wife was blowdrying and the HWH kicked on.

    We also have a single 50a 240v on the pedestal. I would like to get a 50a 25' cord, split it in the lazarette to 2 x 30a 120's. Problem is the splitter is ungodly expensive, and the 50a cord isn't cheap either. My other option is a 50a 240 to 30a 120 adapter and I can run a second 30a cord to the boat.

    None of the options are cheap, but I'd like to be feeding the boat with 60a as designed versus loading a 30a circuit on the pedestal
     
  18. Carpediem44DB

    Carpediem44DB Well-Known Member GOLD Sponsor

    Aug 18, 2015
    Sanfransico Bay area
    2000 Carver 506
    2006 44 DB Sedan Bridge
    Volvo TAMD 74 P
    I have a 75 foot 50 amp cord with a cable master on the 506 to run 4 of six AC units. The other two A/C units are operated by a second 50 amp circuit/ Problem is I need two 50 amp 240V outlets but my slip only has one pedestal and the marina says they cant install a second 50 amp plug in the one box. Also finding 2 30amp plugs in a pedestal that is wire in the same phase can be difficult as well. We are about to head up to Petaluma and the gueat docks only have 30amp power so I will need to find two together to use my splitter. It is a pain in the arse sometimes. I miss my two cable master coiled 30 amp service I had on the 44.
     
  19. The Bill Collector

    The Bill Collector Well-Known Member GOLD Sponsor

    Jun 2, 2008
    Tacoma, WA
    1998 450 Sundancer, Achilles dinghy w/15hp
    3126 Cat's
    And I thought I was a power hog, you are a beast.....
     
  20. Carpediem44DB

    Carpediem44DB Well-Known Member GOLD Sponsor

    Aug 18, 2015
    Sanfransico Bay area
    2000 Carver 506
    2006 44 DB Sedan Bridge
    Volvo TAMD 74 P
    The bridge has a 24000 BTU A/C unit and a 16000 BTU for the aft deck. I have to run the genny at the dock on the hot days to run the AC!
     

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