Per NEC, a service conductor can be used as a tap conductor.

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Multiple Choice

Per NEC, a service conductor can be used as a tap conductor.

Explanation:
The idea being tested is that service conductors are not allowed to be used as tap conductors. In the NEC, the service conductors bring power from the utility to the building’s service equipment, and taps are conductors that extend from a point of service equipment to feed other loads with their own overcurrent protection. The protection and ampacity for taps must be provided by the appropriate overcurrent device at the tap, sized for the downstream circuit. Using the service conductors themselves as a tap would place those taps under the service equipment’s protection in a way that can miscoordinate or bypass proper protection, creating safety and compliance issues. Because of that, it’s not permitted, so the statement is false. If you need to feed additional loads, run separate conductors from the service equipment or arrange a compliant tap with proper protection and conductor sizing.

The idea being tested is that service conductors are not allowed to be used as tap conductors. In the NEC, the service conductors bring power from the utility to the building’s service equipment, and taps are conductors that extend from a point of service equipment to feed other loads with their own overcurrent protection. The protection and ampacity for taps must be provided by the appropriate overcurrent device at the tap, sized for the downstream circuit. Using the service conductors themselves as a tap would place those taps under the service equipment’s protection in a way that can miscoordinate or bypass proper protection, creating safety and compliance issues. Because of that, it’s not permitted, so the statement is false. If you need to feed additional loads, run separate conductors from the service equipment or arrange a compliant tap with proper protection and conductor sizing.

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