SafetyQuestion 441 of 521
The primary safety purpose of equipment grounding (bonding metal enclosures to the equipment grounding conductor) is to:
a.Improve voltage regulation on the circuit
b.Provide a low-impedance fault-current path so overcurrent devices open quickly and metal parts do not stay energized
c.Reduce the customer's electric bill
d.Eliminate the need for GFCI protection
Explanation
Equipment grounding provides a low-impedance path for fault current so the breaker or fuse clears the fault fast and enclosures do not remain energized to a dangerous voltage. It does not regulate voltage, lower the bill, or replace GFCI protection, which detects small leakage currents to protect people.
Law Reference: 2023 NEC §250.4Practice all 521 questions free — no signup required.
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