Wire Stuff

Constants

rho (Cu) = 0.000000017241 Ohm meter

1 inch = 0.0254 meter

1 meter = 3.2808 feet

Formulas

Area by Gauge

30AWG = 0.000254 meter diameter
diameter(awg) = 0.000254 * 2 ^ ((30 - awg) / 6)
A(diameter) = pi * ((diameter / 2) ^ 2)
A(awg) = 0.000127 * 2 ^ ((30 - awg) / 3)

Resistance by Area, Length

R = (rho * len) / area

http://www.itcom.itd.umich.edu/cabling/nec.html

Wire Stuff

Constants

Formulas

Area by Gauge

Resistance by Area, Length

Thu Nov 13 15:54:06 2003