Useful Resources for DIY Solar

Ampacity Ratings for Insulated Conductors NEC 2007

ampacity ratings for insulated conductors
ampacity ratings for insulated conductors

Temperature Correction Factor for wires

Ambient temperature correction factors for ampacity wires
Ambient temperature correction factors for ampacity wires

GHI Solar Irradiance in North-America

GHI solar irradiance north america
GHI solar irradiance north america

Wire selection for DC

Gauge to mm²

16 1.5mm²
14 2.5mm²
12 4.0mm²
10 6.0mm²
8 10mm²
6 16mm²
4 25mm²
2 35mm²
1 50mm²
1/0 55mm²
2/0 70mm²
3/0 95mm²
4/0 120mm²

Voltage drop calculator