314
18
2 Intermediate metal or rigid metal conduit threaded wrench tight into an enclosure can be used to support an outlet box containing devices or Luminaires, if each Raceway is supported within _____ in. of the box.
50
Boxes used at luminarie or lamp holder outlets in a ceiling shall be designed so that it can be attached and the boxes shall be required to support a luminarie weighing a minimum of _____ lb.
1/4 inch
In installations within or behind non-combustible walls or ceilings, the front edge of a box, Plaster ring, extension ring, or listed extender employing a flush - type cover, shall be set back not more than how many inches from the finished surface?
projected from the finished surface, extended to the Finish surface
In installations within walls or ceilings constructed of wood or other combustible surface materials, boxes, plaster rings, extension rings, or listed extenders shall be what?
50
Luminaire that weighs more than _____ pounds can be supported by an outlet box that is listed for the weight of the Luminaire to be supported.
XHHW
Unless otherwise specified, the applicable product standards evaluate the fill markings covered in 314.28 A3, based on conductors with type _____ insulation.
approved
_____ drainage openings not smaller than 1/8 in and not larger than a quarter inch in diameter shall be permitted to be installed in the field in boxes or conduit bodies listed for use in damp or wet locations.
approved
_____ drainage openings not smaller than 1/8 inch and not larger than 1/4 in in diameter shall be permitted to be installed in the field in boxes or conduit bodies listed for use in damp or wet locations.
boxes, conduit bodies, handhole enclosures
_____ shall be installed so that the wiring contained in them can be rendered accessible without removing any part of the building or structure, in underground circuits, without Excavating sidewalks, Paving, or Earth.
double
a device or utilization equipment wider than a single 2-inch device box shall have _____ volume allowances provided for each gang required for mounting.
10
according to the NEC, the volume of a 3 x 2 x 2 device box is how many cubic inches?
double
each strap containing one or more devices shall count as a _____ volume allowance in accordance with table 3 14.16 B, based on the largest conductor connected to the device or equipment supported by the strap.
4
equipment grounding conductor(s), and not more than how many fixture wires smaller than 14 AWG shall be permitted to be omitted from the calculations where they enter the box from the domed Luminaire or similar canopy and terminated within the Box?
listed
floor boxes _____ for the application shall be used for receptacles located in the floor
marking
for conductor sizes and combinations not included in chapter 9, tables 1 or 2, the total cross-sectional area of the fill shall not exceed the cross-sectional area of the conductors specified in the _____, based on the type of conductor identified as part of the product listing.
gang
for the purposes of determining box fill, each device or utilization equipment in the box which is wider than a single device box counts as two conductors for each _____ required for the mounting
Mark or logo
handhole enclosure covers shall have an identifying _____ that prominently identifies the function of the enclosure such as "Electric".
100 lbs
handhole enclosure covers shall require the use of tools to open or they shall weigh over...
canopy, cover, faceplate
in completed installations, each outlet box shall have a what?
8
in straight pulls, the length of the box or conduit body shall not be less than _____ times the trade size of the largest Raceway.
gravel, non-cohesive granulated spoil
listed boxes in hand hole enclosures designed for underground installation can be directly buried when covered by_____ if their location is effectively identified and accessible.
approved
mounting holes for screws used to secure boxes to a structural member using brackets on the outside of the enclosure shall be...
1/8 in
non combustible surfaces that are broken or incomplete around boxes employing a flush type cover or faceplate can be repaired so there will be no gaps or open Spaces larger than _____ in. at the edge of the box.
nonmetallic sheathed, nonmetallic Raceway, flexible cords
nonmetallic boxes can be used with what?
flexible cords, non-metallic sheathes, non-metallic raceways
nonmetallic boxes can be used with...
rivets, bolts, and screws
outlet boxes can be secured to suspended ceiling framing members by mechanical means such as what, or by other means identified for use with the suspended ceiling framing members.
listed and marked
power distribution blocks installed on the line side of the service equipment shall be _____ "suitable for use on the line side of service equipment" or equivalent.
they're listed as a power block, they are installed in a box not smaller than required by the installation instructions of the power distribution block, the junction box is size so that the wire bending space requirements of 312.6 can be met
power distribution blocks should be permitted in pull and junction boxes over 100 cubic inches when what?
Taps, devices, splices
short radius conduit bodies such as capped elbows and service entrance elbows that enclose conductors 6 AWG or smaller shall not contain...
rigidly and securely fastened in place
surface mounted outlet boxes shall be...
true
true or false, boxes, conduit bodies, and fittings installed in wet locations shall be listed for use in wet locations.
false
true or false, conduit bodies containing conductors larger than 6 AWG shall have a cross-sectional area at least twice that of the largest conduit to which they can be attached.
false
true or false, exposed live Parts on the power distribution block are allowed when the junction box cover is removed.
true
true or false, power distribution blocks shall be permitted in pull and junction boxes over 100 cubic inches when they comply with the provisions of 314.28 E1 through 5?
true
true or false, surface extension shall be made by mounting and mechanically securing an extension ring over the Box, unless otherwise permitted.
true
true or false, when calculating box fill, each space within a box installed with a barrier shall be calculated separately?
mechanically connected to the hand hole enclosure
underground raceways and cable assemblies entering a handhole enclosure shall extend into the enclosure, but they are not required to be...
6 lb
vertically mounted Luminaire weighing not more than _____ pounds can be supported by a device box or Plastering with no fewer than two number six or larger screws.
rigidly
when mounting an enclosure in a finished surface, the enclosure shall be _____ secured to the surface by clamps, anchors, or fittings identified for the application.
6
where angle or U poles are made, the distance between each Raceway entry inside the box or conduit body and the opposite wall of the box or conduit body shall not be less than HOW MANY times the trade size of the largest raceway in a row plus the sum of the trade sizes of the remaining raceways in the same wall and row?
35 lbs
list of outlet boxes to support ceiling-suspended fans that weigh more than _____ lbs shall have the maximum allowable weight marked on the box.
8 inches
when type NM cable is used with non-metallic boxes, not larger than 2 1/4" X 4", securing the cable of the box shall not be required if the cable is fastened within _____ in. of that box.
single
where a Luminaire stud or hickey is present in the Box, a _____ volume allowance in accordance with table 3 14.16 B shall be made for each type of fitting, based on the largest conductor present in the Box.
one
where a box is provided with _____ or more security installed barriers, the volume shall be apportioned to each of the resulting spaces; each barrier; if not marked with its volume, shall be considered to take up 1/2 cu. inch if metal, and 1 cu. inch if non-metallic.
1/4
where nonmetallic sheathed cable or multi conductor type UF cable is used, the sheath shall extend not less than_____ inch inside the box and Beyond any cable clamp.
single
where one or more equipment grounding conductors enter a box, a _____ volume allowance in accordance with table 314.16 B shall be made based on the largest equipment grounding conductor.
