Question

NEC 240.4(D) is referred to as the "Small Conductor Rule" and tells us that the maximum overcurrent protection is 15 amperes for _________copper conductors?

1) 10
2) 12
3) 14
4) 16

Answer 1

The maximum overcurrent protection for 14-gauge copper conductors, as per NEC 240.4(D), is 15 amperes.

Step-by-step explanation:

NEC 240.4(D) is often referred to as the "Small Conductor Rule," indicating that for 14-gauge copper conductors, the maximum overcurrent protection should not exceed 15 amperes. The details specified by this rule reflect safety concerns to prevent excessive current which could lead to overheating and potential fire hazards.

In household wiring scenarios, 14-gauge wires are commonly used for light fixtures, receptacles, and other general-purpose circuits not exceeding 15 amperes of current.