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Home > Industry Tables & Calculators > Equipment Grounding Table |
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 Equipment Grounding Table |
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Rating or Setting of
Automatic Overcurrent
Device in Circuit Ahead
of Equipment, Conduit,
etc., Not Exceeding
(Amperes) |
Copper |
Size
(AWG or kcmil)
Aluminum or
Copper-Clad
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 |
Note: Where necessary to comply with Section 250-2(d), the
equipment grounding conductor shall be sized larger than this table.
* See installation restrictions in Section 250-120. |
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