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EGC sizing (zerobytes.monster)

submitted 1 year ago by [email protected] to c/[email protected]

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The original was posted on /r/electricians by /u/juneau54 on 2024-01-22 06:27:33+00:00.

Why do we size the EGC based on the overcurrent device? Why not size it based on the voltage of the system instead? If I have 120 volt system to ground and put a 14awg EGC with a circuit that has a 15 amp breaker and a 14awg EGC with a circuit that has a 30 amp breaker, won’t both breakers trip just as fast if a hot wire were to touch the EGC?

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