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Problems with Smart Y Converter Box

Discussion in 'Electronics' started by Danvilletim, Oct 4, 2021.

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  1. rtrafford

    rtrafford Senior Member

    Joined:
    Jul 13, 2019
    Messages:
    989
    Location:
    Vero Beach
    If the Smart Y is Charles, it will ONLY work if both legs of 50 are in phase. The Hubbell will work on one leg, and if the phasing is wrong on the second leg, it will only give you the 50, not 100.

    So if you're low on volts, you're losing available amps to make up voltage, amps being converted to volts. Compounded if your load is lopsided to one leg. Made even worse if the Smart Y is actually limiting you to 50 amps. If the Smart Y is Hubbell, is the light yellow or green once you've heard the click of engaging?
  2. Danvilletim

    Danvilletim Senior Member

    Joined:
    Oct 30, 2011
    Messages:
    774
    Location:
    isleton, ca
    Green light is engaging. And I’m getting 220v aft boost. I’m drawing 10amps more per leg with shore power vs generator per vessel monitoring system. Weird.

    I think the combo of weak shore power and older iso transformer is hurting.
  3. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    9,827
    Location:
    Satsuma, FL
    It's not weird.
    Your observations are correct.
    When your transformers are in Boost Mode, You are going to draw more amps.

    Newer transformers just get rid of heat better.