Service Equipment Ground-Fault Protection N-sky/iStock/Thinkstock

Service Equipment Ground-Fault Protection

In some cases, you are not going to want this protection.

If the service is a solidly grounded wye of more than 150V to ground but not more than 1,000V phase to phase, each service disconnect of 1,000A or more must have ground-fault protection [230.95]. This does not mean you can’t provide such protection for service disconnects rated under 1,000A; it’s just not required by Code that you do so.

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