Size of Equipment Grounding Conductor

by | Dec 1, 2020 | Electrical, Library

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Minimum sizing of an equipment grounding conductor terminal/conductor is determined based on the maximum ampere rating of the overcurrent protection for the field-wiring conductor supplying the panel — with the exception of equipment grounding terminal for grounding conductors are not required to retain a wire larger than the field wiring conductors supplying the panel.

 

Maximum Ampere Rating of
Overcurrent Protection
Copper AWGAluminum AWG
151412
201210
30108
40108
60108
10086
20064
30042
40031

This table was reproduced, in-part, from UL508A documentation.