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    Paris2's Avatar
    Paris2 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 1, 2009, 11:01 AM
    Right or Wrong
    I am about to install a sub panel. I purchased a 125 amp panel but the vendor only had a 100 amp breaker to feed my panel from the main panel. Would this be within tolerance?
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #2

    May 1, 2009, 11:13 AM
    Yes, what you plan is fine. The panel is rated 25 amps more than the breaker feeding it. No problem.
    sathe1963's Avatar
    sathe1963 Posts: 97, Reputation: 4
    Junior Member
    		  
    #3

    May 2, 2009, 04:59 AM
    Generally, upstream circuit breaker or isolator shall be of higher rating than the down stream breaker. In your case if both the switches / isolating points are in near by area, there is no problem. (becasue of any fault in your panel; only 1 no. 100 ampere breaker is going to trip. You should put a warning sticker on your 125 ampere breaker that "to be loaded up to 80 ampere only") this is because you are receiving power from 100 ampere breaker.
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