Art 312- cabinets, cut-in boxes, and meter socket enclosures

In other than dwelling units, in addition to requirements for field or factory marking of equipment to warn qualified persons of potential electric arc-flash hazards, a permanent label shall be field or factory applied to service equipment rated _____ or more.

1,200a

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.

1/4

Noncombustible surfaces that are broken or incomplete shall be repaired so there will be no gaps or open spaces greater than _____ in. at the edge of a cabinet or cutout box employing a flush-type cover.

1/8

Nonmetallic-sheathed cables can enter the top of surface-mounted cabinets, cutout boxes, and meter socket enclosures through nonflexible raceways not less than 18 in. and not more than _____ ft in length if all of the required conditions are met.

10

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.

20

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 _____.

312.8(A) and 312.8(B)

The term "rainproof" is typically used in conjunction with enclosure type(s) _____.

3R and 3RX

For circuits rated 100A or less, when the equipment terminals are listed for use with 75º C conductors, the _____ column of Table 310.15(B)(16) shall be used to determine the ampacity of THHN conductors.

75 degrees

Cabinets, cutout boxes, and meter socket enclosures can be used for conductors feeding through, spliced, or tapping off to other enclosures, switches, or overcurrent devices where _____.

All of these

Electrical equipment rooms or enclosures housing electrical apparatus that are controlled by a lock(s) shall be considered _____ to qualified persons.

Circular mils

Openings in cabinets, cutout boxes, and meter socket enclosures through which conductors enter shall be _____.

Closed in an approved manner

Unused openings other than those intended for the operation of equipment, intended for mounting purposes, or permitted as part of the design for listed equipment shall be _____.

Closed to afford protection substantially equivalent to the wall of the equipment

In walls constructed of wood or other _____ material, electrical cabinets shall be flush with the finished surface or project therefrom.

Combustible

Where raceways or cables enter above the level of uninsulated live parts of cabinets, cutout boxes, and meter socket enclosures in a wet location, a(n) _____ shall be used.

Fitting listed for wet locations

Concrete, brick, or tile walls are considered _____, as applied to working space requirements.

Grounded

Live parts operating at 50V to 1,000V, nominal shall be guarded by being _____.

Located in a room accessible only to qualified persons

Each cable entering a cutout box _____.

Shall be secured to the cutout box, can be sleeved through a chase, shall have a maximum of two cables per connector

True or False: The minimum height of working spaces about electrical equipment, switchboards, panelboards, or motor control centers operating at 1,000V, nominal, or less and likely to require examination, adjustment, servicing, or maintenance while energized shall be 6 1/2 ft or the height of the equipment, whichever is greater, except for service equipment or panelboards in existing dwelling units that do not exceed 200A.

True

True or False: Where equipment operating at 1,000 volts, nominal, or less to ground and likely to require examination, adjustment, servicing, or maintenance while energized is required by installation instructions or function to be located in a space with limited access, the space in front of the enclosure shall comply with the depth requirements of Table 110.26(A)(1).

True

The wiring space of enclosures for switches or overcurrent devices shall be permitted to contain power monitoring equipment where the _____.

a & b

Service equipment labeling in other than dwelling units shall not be required if an arc-flash label is applied in accordance with _____ industry practice.

acceptable

Electrical equipment rooms or enclosures housing electrical apparatus that are controlled by a lock(s) shall be considered _____ to qualified persons.

accessible

Illumination shall be provided for all working spaces about service equipment, switchboards, switchgear, panelboards, or motor control centers _____.

installed indoors

Only wiring methods recognized as _____ are included in this Code.

suitable

Cabinets, cutout boxes, and meter socket enclosures installed in wet locations shall be _____.

weatherproof