Feed to Separate Building

Discussion in 'Electrical and Wiring' started by handy, Mar 1, 2011.

  1. Mar 1, 2011 #1

    handy

    handy

    handy

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    I'm sure this can't be right, but I've discovered that the feed to my detached garage comes from a 220v 50amp breaker in the main panel in the house. The current is carried by a 10-3 NM cable across the 33 feet to the garage and terminates at an old fuse box in the garage. This box contains 3 of those tubular black fuses and the entire garage is fed directly from this box.

    Am I off the mark or is the 10-3 wiring woefully inadequate to carry anything near 50 amps? In other words, wouldn't the wiring fail before the breaker would ever trip? I haven't had any problems of any kind to date, but I'd like to avoid them in the future as well. I'm thinking that an upgrade of feed wiring, a breaker box install, and some garage interior re-wiring is in order.

    Any thoughts appreciated!
     
  2. Mar 1, 2011 #2

    nealtw

    nealtw

    nealtw

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    30 amp breakers tied together would be the most you would want, the fuses in the garage should be 15 amp. or less, I think.
     
  3. Mar 1, 2011 #3

    speedy petey

    speedy petey

    speedy petey

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    What do you base this on?
     
  4. Mar 2, 2011 #4

    kok328

    kok328

    kok328

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    Yes, 10 AWG is incorrect wire size for a 50-amp breaker. Either increase the wire size or decrease the breaker size.
     

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