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    bomb squad's Avatar
    bomb squad Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Mar 15, 2013, 04:33 AM
    How many amps per wire size
    What r the points in amps which require a increase in wire size? Isn't there somesort of chart?
    smoothy's Avatar
    smoothy Posts: 25,490, Reputation: 2853
    Uber Member
    		  
    #2

    Mar 15, 2013, 04:45 AM
    I hope you aren't wiring anything in your house if you have to ask that question...

    Wiring needs to be inspected and it has to meet local codes. If there were No permits if needed and no inspection and your house burns down... your insurance can legally refuse to pay off on the claim.


    There is more to sizing wire for an application than load and wire size...

    The National Electrical Code book is what you are looking for.
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #3

    Mar 15, 2013, 05:41 AM
    By code, the smallest branch circuit in a residence is 15 amp. This requires #14 AWG Copper.

    20 amp uses #12 AWG, 30 amp uses #10 AWG.

    However as Smoothy stated, there is much more to consider for example the Type of cable, number of conductors needed, temperature of the connecting points, etc.

    What are you trying to wire?
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