Question

Ground-fault protection that functions to open the service disconnect will afford no protection from faults on the ____ of the protective element.

Answer 1

Ground-fault protection that functions to open the service disconnect will afford no protection from faults on the line side of the protective element.

What does "ground fault protection" and residual-current device mean?

• Equipment must be protected from the effects of ground faults by ground fault protection.
• Specific ground fault equipment protection requirements are found in Sections 215.10, 230.95, 240.13, and 517.17 of the National Electrical Code® (NEC®).
• Ground fault relays (or sensors) are used to detect ground faults of low magnitude.
• An electrical safety device that swiftly interrupts an electrical circuit with leaking current to the ground is known as a residual-current device, residual-current circuit breaker, or ground fault circuit interrupter.
• It serves to safeguard machinery and lessen the possibility of significant injury from repeated electric shocks.

To learn more about Ground Fault Circuit Interrupter, refer to the following link:

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