Overcurrent Protection & Controls Flashcards

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

Answer: Branch-circuit overcurrent protection

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

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?

Answer: 2.0 m (6 ft 7 in.)

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

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

Answer: Physical damage

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

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

Answer: Bathrooms

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

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

Answer: Steps of a stairway

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

Per NEC 240.32, enclosures for overcurrent devices in damp or wet locations shall comply with what requirement?

Answer: Prevent moisture or water from entering or accumulating

NEC 240.32 requires damp/wet location enclosures to prevent moisture or water from entering and accumulating.

Per NEC 240.33, enclosures for overcurrent devices shall generally be mounted in what position?

Answer: In a vertical position unless that is impracticable

NEC 240.33 requires enclosures to be mounted vertically unless that orientation is shown to be impracticable.