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Re: T&T: 30A/50A y adapters

From: Ron Rogers (no email)
Date: Sat Jul 08 2006 - 11:03:35 EDT

  • Next message: Chris Byer: "Re: T&T: Idlewild greeting, Vancouver, Aug 11"

    I hope that Arild will comment because the issue of 240 vs. 120V is involved
    as well, *I think.* I ironically, I'm using a dumb splitter to connect a 50
    amp cable to my 30 amp inlet (converting to 50 amp service in-progress.) I
    have noted that I have a little more "headroom" than an ordinary 30 amp
    cable. Larger gauge and more available amps.

    I *think* that if you use 240V service, you only have 30 amps available. Not
    sure if you need 125V whether or not you can draw 50 amps.

    Ron Rogers

    ----- Original Message -----
    From: "Mike Loy" <>

    | One analysis might be to quantify the energy-passing capability of
    | the two alternatives. Electric energy [watts] equals voltage times
    | amps [ignoring power factor]. A 30 amp 120v circuit is nominally
    | capable of passing 3,600 watts. A 50 amp 240v circuit is 12,000
    | watts. Combining two 30 amp circuits [on different legs] gets one to
    | 7,200 watts; well below the capability of the single 50 amp
    | circuit. Using the adapter and putting a load of greater than 7,200
    | watts on it might result in popping the ckt breaker on one or both of
    | the 30 amp feeder legs. Arild, am I wrong?
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