Maryland Journeyperson Electrician Exam, Wiring Methods, Conductors and Boxes: all 52 questions

All questions from the Wiring Methods, Conductors and Boxes section for Maryland Journeyperson Electrician Exam, each with the correct answer.

6001What is the minimum cover for direct burial cable under the general condition (not under a building, slab, or roadway), 600 V or less?
6002What is the minimum cover for rigid metal conduit or IMC under the general condition, 600 V or less?
6003What is the minimum cover for a nonmetallic raceway listed for direct burial without concrete encasement, general condition?
6004A dwelling unit 120 V, 20 A branch circuit with GFCI protection is run underground in UF cable. What is the minimum cover?
6005What is the minimum cover for direct burial cable installed under a 4 in thick concrete slab with no vehicular traffic that extends at least 6 in beyond the installation?
6006What is the minimum cover for any wiring method installed under a public street, highway, alley, or commercial parking lot?
6007Direct buried conductors emerging from grade must be protected by enclosures or raceways to what height above finished grade?
6008Under NEC 2020 and 2023, where must a warning ribbon be placed for direct buried service conductors that are 18 in or more below grade and not encased in concrete?
6010What does the Code require for backfill around underground cables and raceways?
6012When a cable is installed through a bored hole in a wood stud, how far must the edge of the hole be from the nearest edge of the stud unless a steel plate is used?
6013NM cable passes through holes in metal studs that are punched at the factory. What must be done?
6014A cable run parallel to a wood framing member must be kept at least how far from the nearest edge of the member where nails or screws are likely to penetrate?
6015Under NEC 2020 and 2023, a cable run under metal-corrugated sheet roof decking must be kept at least how far from the lowest surface of the decking?
6017Where ungrounded conductors 4 AWG or larger enter an enclosure through a raceway, what is required at the entry?
6019EMT must be securely fastened within what distance of each outlet box, junction box, or termination?
6020What is the maximum distance between supports for EMT under the general rule?
6021Rigid metal conduit must generally be secured within what distance of each box or termination?
6022Trade size 1 rigid PVC conduit must be supported at intervals not exceeding
6023Expansion fittings are required in a run of PVC conduit where the expected length change due to temperature is at least
6024NM cable must be secured at intervals not exceeding
6025NM cable must be secured within what distance of every cable entry into an enclosure such as an outlet box?
6027Type MC cable must generally be secured within 12 in of each box and at intervals not exceeding
6028Type AC cable must be secured within 12 in of each box and at intervals not exceeding
6033In NEC 2020 and 2023, what is the maximum total of bends permitted in a run of EMT between pull points?
6035A conduit run between two boxes has two 90 degree bends and four 30 degree offset bends. How many more degrees of bend may be added before a pull point is required?
6036After cutting EMT, what must be done to the cut ends?
6037What is the maximum percent fill of a conduit containing three or more conductors?
6038A conduit nipple not exceeding 24 in long between boxes may be filled to what percent of its area?
6039When calculating conduit fill, how are equipment grounding conductors treated?
6040What volume allowance does the box fill table assign to each 12 AWG conductor?
6041In a box fill calculation, a single receptacle on one yoke counts as
6042Two equipment grounding conductors enter a box. How are they counted for box fill?
6043A box contains four 12 AWG circuit conductors, two 12 AWG EGCs, and one switch on a single yoke. No clamps or fittings. What is the minimum box volume?
6044Outlet boxes for ceiling-suspended paddle fans must be listed and marked for fan support. What is the maximum fan weight such a box may support?
6045An outlet box at a ceiling luminaire outlet must be designed to support a luminaire weighing at least
6047In a wall of noncombustible material such as concrete or tile, a box may be set back from the finished surface by not more than
6048Outlet and device boxes that do not enclose devices or utilization equipment must have an internal depth of at least
6050For a straight pull through a pull box containing 4 AWG or larger conductors, the box length must be at least how many times the largest raceway trade size?
6051For an angle pull, a trade size 3 and a trade size 2 conduit enter the same wall of a pull box. What is the minimum distance to the opposite wall?
6052What is required on every box in a completed installation?
6054What does the designation THHN indicate?
6055What is the temperature rating of THWN-2 insulation in a wet location?
6056XHHW insulation, without the -2 suffix, is rated 90 C in dry and damp locations and what in wet locations?
6057Which location is classified as a wet location?
6058In NEC 2020 and 2023, aluminum, copper-clad aluminum, or copper conductors may be run in parallel only when they are
6063Which use of a flexible cord is prohibited?
6066Which location permits Type NM cable?
6067In an attic reached only by a scuttle hole, NM cable run across the top of joists must be protected by guard strips within what distance of the scuttle hole?
6068In an unfinished basement, NM cable run at angles to joists must be run through bored holes or on running boards if it is smaller than
6069The ampacity of NM cable conductors is generally determined using which temperature column?
6070Which is a permitted use of Type UF cable?
6071Where rigid PVC conduit is exposed above grade and subject to physical damage, it must be

Maryland Journeyperson Electrician Exam, Wiring Methods, Conductors and Boxes: all 52 questions

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