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    rjlasche's Avatar
    rjlasche Posts: 1, Reputation: 1
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    #1

    Mar 19, 2011, 07:50 PM
    What amp breaker
    What amp breaker is used on a 18.5 minimum amp ac unit with 8 ga supply line.
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #2

    Mar 19, 2011, 08:48 PM
    I think with an 8 ga supply line the max breaker you could put is 40 amps. That doesn't mean you need 40 amps. You may be able to get by with a smaller breaker, depending what the maximum current draw is. It's 18.5 amps minimum, but does the AC unit specify a maximum current?

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