Final answer:
To reduce electrical noise, a metal raceway may terminate in a nonmetallic fitting or spacer with a supplemental insulated equipment grounding conductor. Proper grounding is essential to prevent electric shocks and ensure the functioning of circuit breakers in case of faults.
Step-by-step explanation:
Where installed to reduce electrical noise for electronic equipment on the grounding circuit, a metal raceway can terminate to a nonmetallic fitting(s) or spacer on the electronic equipment. The metal raceway shall be supplemented by an internal insulated equipment grounding conductor.
Proper grounding is crucial for the safety of electronic equipment as it can prevent the user from electric shocks and ensure that circuit breakers function correctly in the event of a fault. For example, if an appliance has worn insulation that allows the live/hot wire to come into direct contact with the metal case of the appliance, a proper ground connection can cause the circuit breaker to trip, notifying that there is a fault condition. This emphasizes the importance of a solid ground connection to maintain safety and functionality of electrical systems.