NEC Overcurrent Protection & Controls 3

Question 1

Where supplementary overcurrent protection is used, per NEC 240.10 it shall NOT be used as a substitute for what?

Accepted Answer

Branch-circuit overcurrent protection

Answer

NEC 240.10 states supplementary overcurrent protection is not a substitute for required branch-circuit overcurrent devices.

Question 2

Per NEC 240.24(A), overcurrent devices must generally be readily accessible and installed so the center of the operating handle is not more than what height above the floor?

Accepted Answer

2.0 m (6 ft 7 in.)

Answer

NEC 240.24(A) limits the operating handle height to 2.0 m (6 ft 7 in.) above the floor or working platform.

Question 3

Per NEC 240.24(D), overcurrent devices shall not be located where exposed to what?

Accepted Answer

Physical damage

Answer

NEC 240.24(D) prohibits locating overcurrent devices where they would be exposed to physical damage.

Question 4

Per NEC 240.24(E), overcurrent devices shall not be located in what location in dwelling units?

Accepted Answer

Bathrooms

Answer

NEC 240.24(E) prohibits overcurrent devices in bathrooms of dwelling units and guest rooms.

Question 5

Per NEC 240.24(F), overcurrent devices shall not be located over what?

Accepted Answer

Steps of a stairway

Answer

NEC 240.24(F) prohibits locating overcurrent devices over the steps of a stairway.

NEC Practice Test

NEC Practice Test

NEC Overcurrent Protection & Controls 3