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Mike Holt Chapter 3 Study Guide
Questions and Verified Answers
Updated 2025 Graded A
1/4 - ANSSurface-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. 100 - ANSHandhole enclosure covers shall require the use of tools to open, or they shall weigh over ___ lb. 14 - ANSThe minimum size copper conductor permitted for branch circuits under 600V is ___ AWG. 2 - ANSFor one-family dwellings and the individual dwelling units of two- family and multifamily dwellings, single-phase feeder conductors consisting of ___ ungrounded conductor(s) and the neutral conductor from a 208Y/120 volt system shall be permitted to be sized in accordance with 310.15(B)(7)(1) through (3). 60 - ANSIf cables meeting the requirements in 310.15(B)(3)(4)a through C with more than 20 current-carrying conductors are installed longer than 24 in. without maintaining spacing, are stacked, or are supported on bridle rings, a ___ percent adjustment factor shall be applied.
60 degrees Celsius - ANSType AC cable installed in thermal insulation shall have conductors that are rated at 90 degrees Celsius. The ampacity of the cable in this application shall not exceed that of a ___ rated conductor. Aluminum - ANS___ is a nonferrous, nonmagnetic metal that has no heating due to hysteresis heating. Angle - ANSIn an FMC installation, ___ connectors shall not be concealed. approved - ANSIMC, elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct contact with the earth, or in areas subject to severe corrosive influences where protected by corrosion protection ___ for the condition. at intervals not exceeding 4 1/2 ft - ANSFMC shall be supported and secured ___. be listed and identified for such use - ANSType MC cable shall be listed and fittings used for connecting Type MC cable to boxes, cabinets, or other equipment shall ___. C. A and B - ANSAt type AC cable terminations, a(n) ___ shall be provided. A. fitting (or box design) that protects the conductors from abrasion B. insulating bushing between the conductors and the cable armor C. A and B D. none of these
couplings - ANSRunning threads shall not be used on RMC for connections at ___. D. A and B - ANSCable trays shall be ___ except as permitted by 392.18(D). A. exposed B. accessible C. concealed D. A and B D. A or B - ANSAll conductors of the same circuit shall be ___, unless otherwise specifically permitted in the Code. A. in the same raceway or cable B. in close proximity in the same trench C. the same size D. A or B D. A or B - ANSAluminum raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, able sheathing, cabinets, elbows, couplings, nipples, fittings, supports, and support hardware ___ shall be provided with supplementary corrosion protection. A. embedded or encased in concrete B. in direct contact with the earth C. likely to become energized D. A or B
D. A or B - ANSConduits or raceways through which moisture may contact live part shall be ___ at either or both ends. A. sealed B. plugged C. bushed D. A or B D. A or B - ANSWhere type NM cables pass through cut or drilled slots or holes in metal members, the cable shall be protected by ___ which are installed in the opening prior to the installation of the cable and which securely cover all metal edges. A. listed bushings B. listed grommets C. plates D. A or B D. All of these - ANSBackfill used for underground wiring shall not damage, ___ or prevent adequate compaction of fill or contribute to corrosion. A. raceways B. cables C. conductors D. all of these D. all of these - ANSIn industrial facilities where conditions of maintenance and supervision ensure that only qualified persons will service the installation, able tray systems can be used to support ___. A. raceways
B. within 5 ft of a box or termination fitting when structural members do not readily permit the raceway to be secured within 3 ft of the termination C. except when the IMC is within 3 ft of the service head for an above-the- roof termination of a mast D. any of these D. any of these - ANSType NM and Type NMC cables shall be permitted in ___, except as prohibited in 334.12. A. one-and two-family dwellings and their attached/detached garages and storage buildings B. multifamily dwellings permitted to be Types III, IV, and V construction C. other structures permitted to by of Types III, IV, and V construction D. any of these dry locations - ANSA multioutlet assembly can be installed in ___. False - ANSTrue or False: Type UF cable can bed used in commercial garages flame retardant - ANSENT is composed of material resistant to moisture and chemical atmospheres, and is ___. four - ANSA run of RMC shall not contain more than the equivalent of ___ quarter bend(s) between pull points such as conduit bodies and boxes.
framing members - ANSHorizontal runs of RMC supported by openings through ___ at intervals not exceeding 10 ft and securely fastened within 3 ft of termination points shall be permitted. Listed - ANSFor locations not specifically identified in Table 300.5, a lesser cover depth than required in Column 5 shall be permitted where specified in the installation instructions of a(n) ____ low-voltage lighting system. listed - ANSFor the purposes of 350.30, ___ LFMC fittings shall be permitted as a means of securement and support. listed - ANSOutlet boxes required in 314.27 shall be permitted to support ___ locking support and mounting receptacles used in combination with compatible attachment fittings. listed for wet locations - ANSThreadless couplings and connectors used with RMC in wet locations shall be ___. no greater than the number for which it was designed - ANSThe maximum number of conductors permitted in any surface metal raceway shall be ___. not required after installation - ANSWhere flexibility is ___, liquidtight flexible metal conduit shall be permitted to be used as an equipment grounding conductor when installed in accordance with 250.118(6).
True - ANSTrue or False: The cut ends of PVC conduit shall be trimmed to remove the burrs and rough edges. True - ANSTrue or False: The service or feeder ratings addressed by 310.15(B)(7) are based on the standard ampacity rating from 240.6(A).
