Wire Size

drivergo2
drivergo2 Expert Adviser
in HUDSON
Recently picked up single bulb 4 inch spot lites with three inch spot mirrors on the back. What guage of wire should i use to wire them up ?Thanks John

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  • DavidC
    DavidC Senior Contributor
    Depends on the watts, divided by volts = amps.  16g is good for up to 10A, 14g is good for 15 A, 12g for 20 A.  These are a little conservative based on relatively long runs, as length affects gauge requirement as well.
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