NYC Master Electrician Actual Exam 2026/2027 | Department of Buildings Licensing Test | Latest Questions & Verified Answers | Grade A

NYC Master Electrician Actual Exam 2026/2027 | Department of Buildings Licensing Test | Latest Questions & Verified Answers | Grade A Overcurrent protection for size 18 AWG non-power-limited fire alarm (NPLFA) circuit conductors shall NOT exceed ____ and the overcurrent protection for size 16 AWG NPFLA circuit conductors shall NOT exceed ____. A. 8 amperes, 10 amperes B. 7 amperes, 12 amperes C. 8 amperes, 12 amperes D. 7 amperes, 10 amperes D. 7 amperes, 10 amperes pg. 648 The general rule is where raceways and cables are exposed to direct sunlight on or above rooftops, and the distance above the roof to the bottom of the raceway or cable is less than 7/8 in., a temperature adder of 33 deg. C (60 deg. F) shall be added to the outdoor temperature to determine the applicable ambient temperature for applications of the correction factors. An exception to this rule is ____. A. Prohibited B. Where the raceway or cables contain 3 or less current-carrying conductors C. Where the insulated conductors or cables have a temperature rating of 90 deg. C or more D. Where the insulated conductors or cables are Type XHHW-2 D. Where the insulated conductors or cables are Type XHHW-2 pg. 158 An emergency system is required to have NO more than ____ to have power available in the event of failure of the normal supply system. A. 10 seconds B. 15 seconds C. 60 seconds D. 3 minutes A. 10 seconds pg. 608 X-ray equipment installed in a hospital may be served by a hard-service cord with a suitable attachment plug, provided the branch circuit rating does NOT exceed ____. A. 15 amperes B. 20 amperes C. 30 amperes D. 50 amperes C. 30 amperes pg. 450 Elevator driving motors used with a generator field control are rated as ____ duty motors. A. Intermittent B. Continuous C. Variable D. Controlled A. Intermittent pg. 530 Where a direct burial cable has a voltage of 45 kV, the NEC mandates the MIN. burial depth or the cable to be at LEAST ____. A. 24 inches B. 36 inches C. 42 inches D. 48 inches C. 42 inches pg. 150 Given: A recreational vehicle campground has a total of 150 RV campsites with electrical power. Twenty-five (25) of the campsites are reserved as tent sites. How many sites are required to have at LEAST one (1) 20-ampere, 125-volt receptacle outlet. A. 105 B. 125 C. 150 D. None C. 150 pg. 489 Determine the MIN. size type SO cord permitted to supply a 40 hp, 460-volt, 3-phase, continuous-duty, ac wound rotor, motor installed in an area with an ambient temperature of 86 degrees F. A. 2 AWG B. 4 AWG C. 6 AWG D. 8 AWG A. 2 AWG pg. 308, 309, 333, 313, 257 Where a 30 hp, 240-volt, 3-phase synchronous motor has a power factor of 90 percent, as per the NEC the full-load running current of the motor is ____. A. 63.0 amperes B. 69.3 amperes C. 76.23 amperes D. 86.62 amperes B. 69.3 amperes pg. 333 When water reaches the height of the established electrical datum plane for an irrigation pond, the on land electrical service equipment must ____. A. Be installed in a NEMA 6 enclosure B. Float C. Be installed in a NEMA 6P enclosure D. Disconnect D. Disconnect pg. 580 Disregarding exceptions, when installing emergency battery pack lighting unit equipment, the branch-circuit feeding this equipment shall: A. Be connected to the nearest receptacle outlet. B. Come from the closest outlet of power that is compatible with the emergency lights rated voltage. C. Be fed only from an identified emergency lighting panel. D. Be on the same branch-circuit serving the normal lighting in the area. D. Be on the same branch-circuit serving the normal lighting in the area pg. 610 In an industrial establishment, what is the MAX. length of 200 ampere rated busway that may be tapped to a 600 ampere rated busway without providing additional overcurrent protection? A. 10 feet B. 25 feet C. 50 feet D. 75 feet C. 50 feet pg. 224 Size 4/0 AWG, 75 deg. C aluminum secondary conductors of a 3-phase delta-wye transformer, shall be protected at NOT more than ____. A. 175 amperes B. 200 amperes C. The calculated load connected to the transformer D. None of these, because secondary protections is not required for multiphase, delta-wye transformer secondary conductors B. 200 amperes pg. 161, 99, 100 For trade size 3/4 inch MI cable, the radius of the inner edge of the bend shall NOT be less than ---- times the external diameter of the cable. A. Three B. Four C. Five D. Seven C. Five pg. 197 Where an exposed flat cable assembly, Type FC, is installed LESS than ____ above the floor or fixed working platform, it shall be protected by a cover identified for the use. A. 6 feet B. 7 feet C. 8 feet D. 10 feet C. 8 feet pg. 192 The MIN. burial depth for conduit or cables installed under an airport runway, concourse or tarmac is ____. A. 1.5 feet B. 2 feet C. 3 feet D. 4 feet A. 1.5 feet pg. 143 Determine the MIN. size overload protection required for a 480 volt, 3-phase, 15 hp, continuous-duty motor given the following related information. * Design C * Temperature rise -40 deg. C * Service factor - 1.12 * Actual nameplate rating - 18 amperes A. 20.7 amperes B. 18.0 amperes C. 22.5 amperes D. 23.4 amperes A. 20.7 amperes pg. 309, 316 Assume where the overload protection you have selected on the above motor is not sufficient to start the motor and trips, therefore, modifications of this value is necessary, determine the MAX. size overload protection permitted. A. 22.5 amperes B. 20.7 amperes C. 25.2 amperes D. 23.4 amperes D. 23.4 amperes pg. 316 Where a 50 kVA transformer with a 480-volt, 3 phase primary and a 208Y/120-volt, 3-phase secondary is to be installed and overcurrent protection is require on both the primary and secondary side of the transformer; determine the MAX. size overcurrent protection device permitted for the primary side. A. 125 amperes B. 150 amperes C. 175 amperes D. 200 amperes B. 150 amperes pg. 343, 344 What is the demand load, in VA, for the general-use receptacles in an office building that has a total of 150 general-use, 125-volt, 20-ampere, single-phase receptacle outlets installed? A. 18,500 VA B. 10,000 VA C. 27,000 VA D. 13,500 VA A. 18,500 VA pg. 75, 76 Determine the MAX. number of size 12 AWG conductors permitted to be housed in a 3.5 inch deep, 3-gang masonry box that contains three (3) switches. A. 21 B. 23 C. 24 D. 27 A. 21 pg. 183, 184 A horizontal raceway entering a dust-ignition proof enclosure from one that is not, need not have a seal-off if it is at LEAST ____ in length. A. 18 inches B. 5 feet C. 10 feet D. 25 inches C. 10 feet pg. 379 Where abandoned communications cables are identified for future use with a tag, the tag shall be _____. A. Red in color B. Orange in color C. Located outside the junction box D. Of sufficient durability to withstand the environment D. Of sufficient durability to withstand the environment pg. 665 All 125-volt, 15- and 20-ampere receptacles located within ____ of the inside walls of a storable pool, storable spa, or storable hot tub shall be protected by a ground-fault circuit interrupter. A. 6 feet B. 8 feet C. 10 feet D. 20 feet D. 20 feet pg. 573 A dry type transformer of 1000 volts or less and NOT exceeding ____ is permitted to be installed in a hollow space of a building, such as above a lift-out ceiling, provided there is adequate ventilation. A. 25 kVA B. 37.5 kVA C. 50 kVA D. 112.5 kVA C. 50 kVA pg. 346 In Class II, Division 1 locations, where pendant mounted luminaires are suspended by rigid metal conduit (RMC) or intermediate metal conduit (IMC) and a means for flexibility is not provided, the conduit stems shall have a length of NOT more than ____. A. 12 inches B. 18 inches C. 24 inches D. 30 inches A. 12 inches pg. 381 All hydromassage bathtub metal piping systems and all grounded metal parts in contact with the circulating water associated with the bathtub shall be bonded together using a solid copper bonding jumper NOT smaller than ____. A. 10 AWG B. 8 AWG C. 6 AWG D. 12 AWG B. 8 AWG pg. 579 Where power-limited fire alarm (PFLA) circuit conductors pass through a wall or floor, the conductors shall be protected by a metal raceway or nonmetallic conduit up to a height of at LEAST ____ above the floor, unless other means of protection is provided. A. 8 feet B. 6 feet C. 7 feet D. 10 feet C. 7 feet pg. 650 Luminaires installed in exposed or concealed locations under metal-corrugated sheet roof decking shall be installed and supported so there is NOT less than ____ clearance from the lowest surface of the roof decking to the top of the luminaire. A. 1 inch B. 1 1/4 inches C. 1 1/2 inches D. 1 3/4 inches C. 1 1/2 inches pg. 278 Transformers with ventilation openings shall be installed so the ventilating openings are not blocked by walls or other obstructions. The required clearances shall be ____. A. Of not less than 3 inches B. Of not less than 6 inches C. Clearly marked on the transformer D. As specified on the approved plans C. Clearly marked on the transformer pg. 346 Where a one-family or two-family dwelling unit has a three (3) car attached garage, the NEC requires a MIN. of ____ 125-volt, single phase, 15- or 20-ampere receptacles to be installed in the garage. A. One B. Two C. Three D. Four C. Three pg. 70 With respect to messenger-supported service-drop conductors and open overhead wiring operating at 0 to 750 volts to ground, the MIN. vertical clearance that must be maintained from the base of a swimming pool diving board and the conductors is ____. A. 22 1/2 feet B. 19 1/2 feet C. 14 1/2 feet D. 10 feet A. 22 1/2 feet pg. 566 Determine the MIN. requires size 75 deg. C rated conductors permitted to be used to supply a demand load of 200 amperes where provided with a 208Y/120-volt, 3-phase 4-wire, electrical system. Consider all four (4) conductors to be current-carrying and the ambient temperature is 120 deg. F. A. 250 kcmil B. 300 kcmil C. 400 kcmil D. 500 kcmil C. 400 kcmil pg. 161, 159, 160 A metal junction box to be installed will contain the following conductors: * three - size 6 AWG ungrounded conductors * three - size 6 AWG grounded conductors * one size 8 AWG grounding conductor * three - size 12 AWG ungrounded conductors * three - size 12 AWG grounded conductors * one - size 12 AWG grounding conductor The junction box is required to have a volume of at LEAST ____. A. 51.50 cubic inches B. 53.75 cubic inches C 46.50 cubic inches D. 56.50 cubic inches C. 46.50 cubic inches pg. 183, 184 In regard to permanently installed swimming pools, where necessary to employ flexible connections to a pool pump motor, ____ shall be permitted as the wiring method(s). I. UF cable II. Liquidtight flexible metal conduit (LFMC) A. I only B. II only C. Neither I or II D. Both I and II B. II only pg. 567 In regard to legally require standby systems, transfer switches shall be ____ and marked for emergency system or legally required standby use and approved by the authority having jurisdiction. A. Manual B. Automatic C. Non-automatic D. Red in color B. Automatic pg. 612 In commercial vehicle repair garages, lamps and lampholders for fixed lighting located over lanes which vehicles are commonly driven, shall be located not less than ____ above the floor level, unless the luminaires are of the totally enclosed type. A. 8 feet B. 10 feet C. 12 feet D. 14 1/2 feet C. 12 feet pg. 410 Determine the maximum permitted operational setting of an adjustable inverse time circuit breaker used for branch-circuit, short-circuit and ground-fault protection of a 10 hp, 208-volt, 3-phase, squirrel cage, Design B, continuous-duty motor. Assume the motor will start at this setting and exceptions are not applicable. A. 30.8 amperes B. 35.7 amperes C. 77.0 amperes D. 338.8 amperes C. 77.0 amperes pg. 309, 333, 319 Where transformer vaults are not protected with an automatic fire-suppression system, they shall be constructed of approved materials that have a MIN. fire-resistance rating of ____. A. 1 hour B. 2 hours C. 3 hours D. 4 hours C. 3 hours pg. 348 At a truck plaza, every electrified truck parking space intended to provide an electrical supply for transport refrigerated units (TRUs), shall be equipped with a ____ receptacle outlet. I. 30 ampere, 480-volt, 3-phase, 3-pole, 4-wire II. 60 ampere, 208-volt, 3-phase, 3-pole, 4-wire A. I only B. II only C. either I or II D. both I and II C. either I or II pg. 539 What is the MAX. distance allowed to support intermediate metal conduit (IMC) from a junction box, where structural members do not readily permit fastening. A. 3 feet B. 5 feet C. 6 feet D. 8 feet B. 5 feet pg. 205 All signs provided with electric power shall be installed at a height of not less than ____ above areas accessible to vehicles unless protected from physical damage. A. 14 feet B. 12 feet C. 18 feet D. 10 feet A. 14 feet pg. 510 Photovoltaic equipment shall be provided with isolating devices or equipment disconnecting means in circuits connected to equipment at a location within the equipment, or within sight and within ____ of the equipment. A. 50 feet B. 25 feet C. 20 feet D. 10 feet D. 10 feet pg. 587 Determine the MAX. standard size inverse time circuit breaker permitted for branch-circuit, short-circuit, and ground-fault protection for a 50 hp, ac motor, when given the following related information. * continuous-duty * induction type * 3-phase, 480-volt * Design L * nameplate rating 62 amperes A. 175 amperes B. 200 amperes C. 250 amperes D. 300 amperes C. 250 amperes pg. 100, 309, 318, 333 In general, on the load side of the point of grounding of a separately derived system such as a transformer, a grounded conductor is NOT permitted to be connected to ____. A. equipment grounding conductors b. normally noncurrent-carrying metal parts of equipment C. ground, the earth D. any of these D. any of these pg. 116 The life safety branch of the essential electrical system of a health care facility shall provided power to ____. I. automatic doors used for building egress II. illumination of electrical equipment rooms A. I only B. II only C. both I and II D. neither I or II A. I only pg. 443 Intrinsically safe apparatus, associated apparatus, and other equipment shall be installed ____. A. in accordance with the control drawings B. in the electrical equipment room C. on a backboard of at least 3/4 inch thick plywood D. in a dedicated enclosure A. in accordance with the control drawings pg. 386 The grounded conductor of a 3-phase, 3-wire, delta service shall have an ampacity NOT less than ____. A. that of the grounding conductor B. that of the ungrounded conductors C. 80 percent of the ungrounded conductors D. 125 percent of the grounding conductor B. that of the ungrounded conductors pg. 115 Where a 150 kVA service transformer has a 480Y/277-volt, 3-phase primary and a 208Y/120 volt, 3-phase secondary, the full-load ampere rating on the primary side of the transformer is ____. A. 180 amperes B. 312 amperes C. 542 amperes D. 416 amperes A. 180 amperes Direct-buried cables or conductors located in a trench below 2 inch thick concrete or equivalent shall have a MIN. cover requirement of ____. A. 6 inches B. 12 inches C. 18 inches D. 24 inches C. 18 inches pg. 143 The lightning protection system ground terminals shall be bonded to the building or structure grounding electrode system. The bonding shall be _ and to all raceways, boxes, and enclosures between the cabinets or equipment and the grounding electrode. A. insulated from one end B. insulated at each end C. bonded at both ends D. bonded at one end only C. bonded at both ends pg. 123, 129 Type AC cable shall provide an adequate path for: A. grounding conductors B. fault current C. water drainage D. a grounding electrode B. fault current pg. 191 A totally enclosed ac motor located in a Class I, Division 1 location shall ____. A. be double insulated B. be located no more than 5ft. above the floor C. have a temperature rise of not more than 40 deg. C D. be supplied with positive air ventilation D. be supplied with positive air ventilation pg. 375 Color coding shall be permitted to identify intrinsically safe conductors where they are colored ____ and where no other conductors of the same color are used. A. orange B. light blue C. yellow D. green B. light blue pg. 388 Mandatory rules of the NEC are those that identify actions that are specifically required or prohibited, are characterized by the use of the terms ____. A. shall or shall not B. may or may not C. will or will not D. can or cannot A. shall or shall not pg. 30 A surge arrestor is required on each ungrounded conductor of an industrial facility that experiences sever thunderstorms. If the electrical system is a 4-wire, wye connected grounded system, how many surge arrestors shall be required? A. one B. two C. three D. four C. three pg. 109, 110 As per the NEC, a ____ locations may be temporarily subject to dampness and wetness, as in the case of a building under construction. A. dry B. damp C. moist D. wet A. dry pg. 38 High-impedance grounded neutral systems shall be permitted for 3-phase AC systems of 480 volts to 1,000 volts where ____. A. the conditions of maintenance ensure that only qualified persons service of the installation B. ground detectors are installed on the electrical system C. line-to-neutral loads are not served D. all of these conditions are met D. all of these conditions are met pg. 119 Where the overcurrent protection specified is not sufficient for the starting current of an air conditioner motor-compressor, the rating or setting shall be permitted to be increased, but shall not exceed ____ of the motor-rated-load current or branch circuit selection. A. 225% B. 175% C. 125% D. 115% A. 225% pg. 338 Floor duct installed in the concrete floor of an aircraft hangar shall be classified as a ____ location. A. Class II, Division 2 B. Class II, Division 1 C. Class I, Division 2 D. Class I, Division 1 D. Class I, Division 1 pg. 413 Generally, where installed on the outside of a raceway, the length of the equipment bonding jumper shall NOT exceed ____ and shall be routed with the raceway. A. 4 feet B. 6 feet C. 5 feet D. 8 feet B. 6 feet pg. 127 Unless otherwise permitted by the local authority having jurisdiction, Type AC cable shall be secured within ____ of every box, cabinet, or fitting and at intervals not exceeding 4.5 ft. where installed on or across framing members. A. 8 inches B. 18 inches C. 12 inches D. 24 inches C. 12 inches pg. 191 Energized electrical equipment operating at 120-volts to ground with exposed live parts on one side and a concrete block tile wall on the other side of the working space, is Condition ____. A. one B. two C. three D. four B. two pg. 50 Where corrosion protection is necessary and rigid metal conduit (RMC) or intermediate metal conduit (IMC) is threaded in the field, the threads shall be coated with a/an ____ material compound. A. grounding B. moisture-resistant C. non-conductive, corrosion-resistant D. approved, electrically conductive, and corrosion-resistant D. approved, electrically conductive, and corrosion-resistant pg. 144 In general, flexible metal conduit (FMC0 shall be securely fasted in place and supported by an approved means at intervals NOT exceeding ____. A. 1 foot B. 3 feet C. 4.5 feet D. 6 feet C. 4.5 feet pg. 208 The accessible portions of abandoned supply circuits and interconnecting cables for information technology equipment, or any systems in an information technology equipment room, shall be ____. A. removed unless contained in a metal raceway B. required to be secured in place C. protected by a nonmetal covering D. tagged to avoid potential damage A. removed unless contained in a metal raceway pg. 548 Disregarding exceptions, the maximum distance permitted for seven (7) current-carrying Type NM cable to be bundled together without requiring the ampacity of the conductors to be reduced is ____. A. 12 inches B. 24 inches C. 30 inches D. 36 inches B. 24 inches pg. 158 For other than dwelling units, all single-phase, 125-volt, 15- and 20-ampere receptacle outlets shall be calculated at NOT less than ____ for each single or for each multiple receptacle mounted on one yoke. A. 100 VA B. 150 VA C. 180 VA D. 200 VA C. 180 VA pg. 75 Where underground installed service conductors emerge from grade and are exposed to physical damage, which of the following listed raceways are NOT approved for such use? A. rigid metal conduit B. Schedule 80 PVC C. Schedule 40 PVC D. RTRC-XW C. Schedule 40 PVC pg. 142 One who has skills and knowledge related to the construction and operation of the electrical equipment and installations and has received safety training to recognize and avoid the hazards involved, is defined in the NEC as a/an ____ person. A. exposed B. knowledgeable C. safety certified D. qualified D. qualified pg. 39 Cable splices made and insulated by approved methods are permitted to be located within a cable tray, provided they are ____. A. accessible B. copper conductors only C. conductors with a temperature rating of not less than 90 deg. C D. exposed to ambient temperatures of not more than 110 deg. F A. accessible pg. 242 Transformers containing oil or a liquid that will burn where located in Class I, Division 1 locations shall be ____. A. enclosed in a fence B. installed in vaults only C. identified for Class I locations D. installed in a fire-proof room B. installed in vaults only pg. 373 Given: A retail department store having dimensions of 100 ft. by 300 ft. is supplied by a 208Y/120-volt, three-phase electrical system. What is the general lighting demand load, in VA, on the underground (phase) service-entrance conductors? A. 37,500 VA B. 45,000 VA C. 57,000 VA D. 90,000 VA C. 57,000 VA pg. 74, 75 Refer to the previous question and determine the MIN. required number of single-phase, 120 volt, 20-ampere branch circuits to be provided for the general lighting load. A. 30 B. 24 C. 36 D. 40 B. 24 pg. 75, 63 According to the NEC, when an installation uses metal conduits entering service equipment or enclosures with concentric or eccentric knockouts, as a MIN. requirement, the raceway(s) shall be equipped with ____. A. double locknuts B. single locknuts C. at least one locknut and one bushing D. bonding jumpers, and bonding-type locknuts or bushing with bonding jumpers D. bonding jumpers, and bonding-type locknuts or bushing with bonding jumpers pg. 117