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    jesse1990's Avatar
    jesse1990 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Feb 7, 2012, 06:10 AM
    What's the hazzard using different size wire
    What's the hazzard of going from a 20gage wire to a 15 gage wire when installing an emergency exit light
    donf's Avatar
    donf Posts: 5,679, Reputation: 582
    Printers & Electronics Expert
    		  
    #2

    Feb 7, 2012, 07:32 AM
    Well it is over kill.

    14 AWG conductors will work, but it would be smarter and easier to work with the 20 AWG wire.

    Now if you really meant 12 AWG conductors, then the answer is much clearer.

    If you splice 12 AWG wire to 14 AWG wire, then you must protect the entire circuit with a 15 amp breaker.

    You cannot use a 20 amp breaker with 14 AWG wire in the circuit,
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #3

    Feb 7, 2012, 10:27 AM
    Exactly where will this #20 AWG wire be installed?

    Minimum size building wire allowed will be #14, minimum size wire used in a fixture would be #16.
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