Don’t just take a glance, see a testing sticker and approve it!​

Ground-fault protection of electrical equipment is required by the National Electrical Code (NEC) in order to minimize the damage to the equipment in the case of a ground fault. Ground-fault protection of equipment is “a system intended to provide protection of equipment from damaging line-to-ground fault currents by operating to cause a disconnecting means to open all ungrounded conductors of the faulted circuit. This protection is provided at current levels less than those required to protect conductors from damage through the operation of a supply circuit overcurrent device.” The minimum code requirement for ground-fault protection of equipment as outlined in NEC 230.95 is for “…solidly grounded wye electric services of more than 150 volts to ground but not exceeding 600 volts phase-to-phase for each service disconnect rated 1000 amperes or more.”

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