Article 312- CABINETS, CUTOUT BOXES, AND METER SOCKET ENCLOSURES

Openings in cabinets, cutout boxes, and meter socket enclosures through which conductors enter shall be ________. (a) closed in an approved manner (b) made using concentric knockouts only (c) centered in the cabinet wall (d) identified

(A) CLOSED IN AN APPROVED

Where raceways or cables enter above the level of uninsulated live parts of cabinets, cutout boxes, and meter socket enclosures in wet location, a(n) _______ shall be used. (a) fitting listed for wet locations (b) explosionproof seal (c) fitting listed for damp locations (d) insulated fitting

(A) FITTING LISTED FOR WET LOCATIONS

Each cable entering a cutout box _______. (a) shall be secured to the cutout box (b) can be sleeved through a chase (c) shall have a maximum of two cables per connector (d) all of these

(A) SHALL BE SECURED TO THE CUTOUT BOX

Nonmetallic-sheated cables can enter the top of surface-mounted cabinets, cutout boxes, and meter socket enclosures through non flexible raceways not less than 18 in. and not more than _______ ft in length if all of the required conditions are met. (a) 3 (b) 10 (c) 25 (d) 100

(B) 10

Surface-type cabinets, cutout boxes, and meter socket enclosures in damp or wet locations shall be mounted so there is at least ______in. airspace between the enclosure and the wall or supporting surface. (a) one sixteenth (b) ¼ (c) 1¼ (d) 6

(B) ¼

Enclosures for switches or overcurrent devices are allowed to have conductors feeding through where the wiring space at any cross section is not filled to more than _______ percent of the cross-sectional area of the space (a) 20 (b) 30 (c) 40 (d) 60

(C) 40

The wiring space within enclosures for switches and overcurrent devices shall be permitted for other wiring and equipment subject to limitations for specific equipment as provided in _________ (a) 312.8(A) (b) 312.8(B) (c) a and b (d) none of these

(C) A AND B

Cabinets, cutout boxes, and meter socket enclosures installed in wet locations shall be ________. (a) waterproof (b) rain tight (c) weatherproof (d) watertight

(C) WEATHERPROOF

The wiring space of enclosures for switches or overcurrent devices shall be permitted to contain power monitoring equipment where the _______. (a) power monitoring equipment is identified as a field installable accessory as part of the listed equipment, or is a listed kit evaluated for field installation in switch or overcurrent device enclosures (b) total area of all conductors, splices, taps and equipment at any cross section of the wiring space does not exceed 75 percent of the cross-sectional area of that space (c) (d) none of these

(C) a and b

Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than ________ in. at the end of a cabinet or cutout box employing a flush-type cover. (a) one thirty-two (b) one-sixteenths (c) ⅛ (d) ¼

(C) ⅛

Cabinets, cutout boxes, and meter socket enclosure can be used for conductors feeding through, spliced, or tapping off to other enclosures, switches, or overcurrent devices where ________ (a) the total area of the conductors at any cross section does not exceed 40 percent of the cross-sectional area of the space (b) the total area of conductors, splices and taps installed at any cross section does not exceed 75 percent of the cross-sectional area of that space (c) a warning label on the enclosure identifies the closest disconnecting means for any feed-through conductors (d) all of these

(D) ALL OF THESE

In walls constructed of wood or other _________ material, electrical cabinets shall be flush with the finished surface or project therefrom. (a) nonconductive (b) porous (c) fibrous (d) combustible

(D) COMBUSTIBLE