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Table 250-122. Minimum Size Equipment Grounding
Conductor for Grounding Raceway and Equipment

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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