Raleigh, NC
Quoted from pinmike:If you have a crimper tool you will see gauge holes,Just put the wire through the hole that fits it and you will know what gauge it is.
Please note, that this is WITHOUT the insulation on the wire. Depending on insulation class, voltage class, etc, the insulation will be thicker and would skew your results. What you are trying to measure is the circular mils (cross sectional area) of the copper, not the 'wire' 
As a general rule, anything in the PF, non motor/solenoid related 18 awg, any board work, unless it's a solenoid/power trace, 22 awg. Anything solenoid/power related I try to use 16 awg. Main power cable coming into transformer, 14 awg.
