Wire diameter:
dn (in) = 0.005 in × 92(36-n)/39
dn (mm) = 0.127 mm × 92(36-n)/39
Wire cross-sectional area:
An (kcmil) = 1000×dn2 = 0.025 in2 × 92(36-n)/19.5
An (in2) = (π/4)×dn2 = 0.000019635 in2 × 92(36-n)/19.5
An (mm2) = (π/4)×dn2 = 0.012668 mm2 × 92(36-n)/19.5
Wire resistance:
Rn (Ω/kft) = 0.3048 × 109 × ρ(Ω·m) / (25.42 × An (in2))
Rn (Ω/km) = 109 × ρ(Ω·m) / An (mm2)