Build my own cabin - DIY projects

NEC 2008: Table 250.122

 

Min Size Equipment Grounding Conductors
Rating or Setting of Automatic Overcurrent Device in Circuit Ahead of Equip, Conduit, etc., Not Exceeding (Amps) Size (AWG or kcmil)
Copper Aluminum
15 14 12
20 12 10
30 10 8
40 10 8
60 10 8
100 8 6
200 6 4
300 4 2
400 3 1
500 2 1/0
600 1 2/0
800 1/0 3/0
1000 2/0 4/0
1200 3/0 250
1600 4/0 350
2000 250 400
2500 350 600
3000 400 600
4000 500 800
5000 700 1200
6000 800 1200

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