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NYC MASTER ELECTRICIAN EXAM
Type ____ is multiconductor cable identified for use as underground service entrance cable. correct answersType USE cable Knife switch rated for more than 1200 Amps at 250Volts or less correct answersCan be used only as isolating switch, shall not be opened under load Track lighting with outlets in a bathroom is not allowed because? correct answersTrack lighting has receptacle Where internal combustion engines are used as the prime motor, an on site fuel supply shall be provided with an on premise fuel supply sufficient for not less than ____ hours full demand operation of the system correct answers6 hours Fixed in place X-ray equipment properly supplied by a branch circuit rated at not over ____ amperes shall be permitted to be supplied through a suitable attachment plug cap and hard service cable cord. correct answers30 Amps Where skin effect exist the ferromagnetic envelope shall be bonded at ____. correct answersBoth ends GFCI protection at a carnival is not required for equipment at circuit if the receptacle is of the ____type. correct answersLocking The maximum voltage drop from service point to the last over-current device in a dwelling unit? correct answers4% Which of the following statements best describe the grounding requirement for central vacuum outlet correct answersAccessible non current carrying metal parts are required to be connected to an equipment grounding conductor.
In healthcare facilities, patient bed receptacles located in general care areas shall be supplied by at least two branch circuits, which ____permitted to originate from two separate transfer switches on the emergency system correct answersAre permitted Patient care areas of healthcare facilities ____ areas such as business offices, corridors, lounges ,day rooms, or similar areas correct answersDo not include The patient care area is any portion of the healthcare facility where patients are intended to be ____or ____. correct answersExamined or treated Each general care area patient bed location in a healthcare facility must be provided with four ____ or ____ duplex receptacles correct answersSingle or two A hospital is a building or portion thereof used for medical, psychiatric,obstetrical , or surgical, care on a 24 hour basis of ____ or more patients correct answersFour Where installed to reduce electrical noise for electronic equipment, electrical continuity of the metal raceways shall not be required and metal raceway can terminate a (an) ____ nonmetallic fitting or spacer on electronic equipment correct answersListed fitting Feeder and branch circuit conductors within ____ inches of a Ballast shall have an insulation temperature rating not lower than 90°C (194°F) unless supplying a luminaiere marked as suitable for a different insulation temperature correct answers3 inches Manufactured wiring systems constructed with type MC cable shall be supported and secured at intervals not exceeding ____ ft. correct answers6 ft Where a main bonding jumper or a system bonding jumper is a screw only the screw shall be identified with a ____ that shall be visible with the screw installed correct answersGreen finish Plug fuses a 15 amperes and lower rating shall be identified by a ____ configuration of the window, cap, or other prominent part to distinguish them from fuses of higher ampere rating correct answersHexagon
Class 2 and Class 3 circuits shall not be placed in any enclosure, raceway, cable, or similar fittings with conductors of Class 1 or electric light or power conductors, unless ____. correct answersSeparated by barrier In the critical care areas of health care centers, each patient bed shall be provided with a minimum of ____ duplex receptacles correct answers3 duplex (6 single) The equipment system shall supply major electric ____ necessary for patient care and basic hospital operation correct answersEquipment The essential electrical system in a healthcare facility shall be compromised of the correct answersemergency system and the: equipment system Locations were flammable anesthetics are employed are class I,Division I locations that shall extend correct answersupwards to a level 5'ft above the floor In a healthcare facility receptacles and attachment plugs in a hazardous (classified) location with an anesthizing area shall be listed for use in class I group ____ locations correct answersGroup C In anesthetic,areas health care equipment frequently in contact with bodies of persons shall not exceed ____ volts. correct answers10 Volts In anesthetic areas, low-voltage equipment that is frequently in contact with the bodies of persons or has exposed current-carrying elements shall correct answersoperate on an electrical potential of 10 volts or less,be moistur- resistant, be approved as intrinsically safe or double-insulated equipment. In a healthcare facility, the maximum internal current permitted to flow through a line isolated monitor,when any point of the isolated system is grounded, shall be ____. correct answers milliamperes Transfer eguipment, including automatic transfer switches,shall be correct answersautomatic, identified for emergency use , approved by the authority having jurisdiction
Automatic transfer switches shall be ____ operated and ____ held correct answersElectrically operated and mechanically Audible and visual signal devices for an emergency system shall be provided,where practicable, for the purpose(s) of indicating that correct answersthe battery is carrying load, derangement of emergency source, that the battery charger is not functioning Wiring from an emergency source to emergency loads shall ____ ____ ____ ____ of all other wiring correct answersBe kept entirely independent of all other wiring Emergency circuit wiring shall be permitted to enter which of the following types of equipment with normal circuit wiring? correct answersTransfer switches, exit or emergency luminaries supplied from two sources Emergency circuit wiring must be designed and located in such a manner so as to minimize the possibility of failure because of ____, ____, ____. correct answersVandalism,flood,fire. Emergency lighting emergency power or both must be available in the building within a time not exceeding ____seconds correct answers10 seconds A storage battery supplying emergency lighting and power shall maintain not less than 87.5% of full fault is that total low for a period of at least 1.5 hours correct answers Where an internal combustion engine is used as the prime mover for the emergency system and on-site fuel supply shall be provided for not less than 6 hours of full-demand operation of the system correct answers Unit equipment (battery packs) shall be on the same branch circuit as that serving the normal lighting in the area and connected ahead of any local switches correct answers The alternate source for emergency systems shall not be required to have ground-fault protection of equipment with automatic disconnecting means correct answers
Two or more 20A small appliance branch circuits shall be provided to supply power for receptacles outlets in the dwelling unit kitchen,dining room,breakfast room, pantry, or similar dining areas correct answers At least one 125v, single phase, 15A or 20A, duplex receptacle shall be provided in the elevator hoistway pit. correct answers The feeder and branch circuit overcurrent devices shall be accessible by? Authorized persons only correct answers Receptacle outlet in floor shall not be counted as part of the required number of receptacle outlets unless located within 18" of the wall correct answers A door used by personnel to exit the work space that is less than 25' feet from the working space shall, swing outward with simple pressure. correct answers Cables with entirely nonmetallic sheath (ROMEX) shall be permitted to enter the top of a surface mounted enclosure through one or more non flexible raceways not less than 18" correct answers In straight pull, the length of the box shall not be less than 8 times the trade size of the largest raceway. correct answers A separate branch circuit shall supply the elevator hoistway pit lighting and receptacle. The required lighting shall not be connected to the load side of a ground-fault circuit interrupter. correct answers What is true about installation of a Type 1 TVSS Can be connected to line side of service disconnect. correct answers A load demand factor of 75% is permitted for four or more appliances fastened in place such as waste disposal, dishwashers, trash compactors, water heater, etc, correct answers
Which of the following statements best describes the grounding requirements for central vacuum outlet assemblies? Accessible non-current-carrying metal parts are required to be connected to an equipment grounding conductor. correct answers Service drops installed over roofs shall have a vertical clearance of 8ft above the roof surface,unless a lesser distance is permitted by an exception correct answers The maximum total voltage drop on branch-circuit conductors is 3% percent. correct answers Which of the following shall not be connected to the life safety branch in a hospital? General illumination correct answers How many receptacles are required within the perimeter of a balcony, deck or porch with a useable area of less than 20 square FT. 1 correct answers Branch circuit conductors within 3in. Of a ballast shall have an insulation temperature rating not lower than 90 degrees celsius (194 degrees Fahrenheit) correct answers A multi family building has 12 units. The system voltage is 120/240V, single-phase. Each 1,500 sq ft unit contains the following: Dishwasher 1.50 kva Water Heater 4kw Dryer 4.50 kW Washing Machine 1.20 KVA Range 14.45 kw A/C (230V) 3hp A/C fan motor 1/8 hp (334) Heat 5kw correct answers Which of the following are not permitted for the protection of equipment in electrical vaults? Stud walls covered with wallboard having a 3 hr rating correct answers
How many receptacle outlet are permitted on a 20A, 120V circuit in a commercial building? correct answers ENT and fitting can be encased in poured concrete, provided fitting identified for this purpose are used. correct answers Where conductors of different system are installed in the same raceway, one system shall have a neutral having an outer covering of white or natural gray and each other system having a neutral shall have another covering of white with colored stripe other than green or distinguished by other suitable approved means correct answers Where angle or U pulls are made, the distance between each inside the box and the opposite wall of the box shall not be less than six times the trade size of the largest raceway in row. correct answers Lighting system covered by Article 411 shall have a power supply rated not more than ——amps and not more than 30V. correct answers25 amps The demand factor for marina load calculations of 45 shore power receptacles is ____%. correct answers50% Which flexible cable is allowed to be used for a Electric Vehicle Charging Station? correct answersEVJ Communication circuits shall have a minimum grounding conductors of ____AWG. correct answers# AWG Lighting system operating at 30V or less shall not be installed within ____ feet of pools, spas, fountains, or similar locations. correct answers10'ft The working space in front of the electric equipment shall not be less than ____ inches wide, or the width of the equipment, whichever is greater. correct answers30" inches
The minimum clearance for overhead feeder conductors not exceeding 600V that pass over commercial areas subject to truck traffic is ____ feet. correct answers18" feet A limited care facility is an area used on a ____hour basis for the housing of four or more persons who are incapable of self-preservation because of age, physical limitation due to accident or illness, or mental limitations, mental illness, or chemical dependency. correct answers24hr For equipment rated 1200A or more and over 6ft wide that contains over-current devices, switching devices, or control devices, there shall be one entrance to and egress from the required working space not less than 24inches. Wide and ____ nches high at each end of the working space. correct answers6'foot 6"inches (78" inches) Rigid metal conduit that is directly buried outdoors shall have at least ____inches of cover. correct answers6" inches In a health care facility, receptacles and attachment plugs in a hazardous (classified) location within an anesthetizing are shall be listed for use in Class 1, GroupC. correct answers Infrared Lamps for commercial and industrial heating appliances shall have over-current protection not exceeding ____ Amps. correct answers50Amps Panel boards equipped with snap switches rated at ____ or less shall have over-current protection not exceeding 200A. correct answers30Amps For cord and plug connected electric vehicle supply equipment is used, the interrupting devices of a listed personnel protection system shall be provided and shall be located in the power supply cable not more than ____inches from the attachment plug. correct answers12" inches Equipment associated with electrical installation can be located above or below other electrical equipment within their working space when the associated equipment does not extend more than —— inches from the front of the electrical equipment. correct answers6" inches
The authority having jurisdiction has the responsibility for making interpretations of rules, for deciding upon the approval of equipment and materials, for waiving specific requirements in the code permitting alternate methods and materiel if safety is maintained. correct answers Outdoor electrical vehicle charging sites, unless specifically listed for the purpose and location, the coupling means of the electric vehicle supply equipment shall be stored or located at a height of not less than ____ inches and not more than ____ft. correct answers24"inches and not more than 4'feet In NEC, the words "____, ____ ____ indicate a mandatory requirement. correct answers"Shall, Shall Not" When the code uses the words "____ be____" it means the identified actions are allowed but not required, and they may be options or alternative methods. correct answers"Shall be Permitted" For switchboard that are not totally enclosed, in a space of ____"inches or more shall be provided between the top of the switchboard and any combustible ceiling. correct answers36"inches (3ft) Overhead feeder conductors shall have a minimum ____feet vertical clearance over residential property and driveways, as well as those commercial areas not subject to truck traffic, where the voltage is limited to 300V to-ground. correct answers12'feet Class 2 and Class 3 circuits shall not be placed in any enclosure, raceway, cable, or similar fittings with conductors of Class 1 or electric light or power conductors, unless ____ ____ ____. correct answersSeparated by barrier The feeder conductor ampacity shall not be less than that of the service-entrance conductors with an ampacity of ____Amps or less correct answers50Amps or less Where cables or nonmetallic raceways are installed through bored holes in joist, rafters, or wood members, holes shall be bored so that the edge of the hole is not less than ____ from the nearest edge of the wood member. correct answers1 and 1/4"inch Equipment installed in hazardous (classified) locations shall be marked to show the Class, group, temperature class (T Code) or operating temperature at a 40C or 104F ambient temperature. correct answers
Which of the following statements best describes the grounding requirements for central vacuum outlet assemblies? Accessible non current carrying metal parts required to be connected to an equipment grounding conductor. correct answers Where installed to reduce electrical noise for electronic equipment, electrical continuity of the metal raceway shall not be required and the metal raceway can terminate to a listed non metallic fitting or spacer on the electronic equipment. correct answers An insulated grounded conductor of #6AWG or smaller shall be identified by a continuous white or gray outer finish, or by three continuous white stripe on other than green insulated along its entire length correct answers The required working space for access to live parts operating at 300V to ground, where there are exposed live parts on one side and grounded parts on the side is 3 1/2'ft correct answers Open conductors installed outside shall be separated from open conductors of other circuits or systems by not less than ____inches. correct answers4'inches To guard live parts over 50V but less than 600V, equipment is permitted to be located in a room only accessible to qualified persons, located on a balcony accessible only to qualified persons, elevated 8'ft or more above floor or other working surface correct answers The equipotential plane in an agricultural building shall be connected to the electrical grounding system with a copper, insulated, covered, or bare conductor and not smaller than -____AWG correct answers8AWG Dwelling units circuits running through another dwelling unit in common areas. What percentage of change will require it to be up to code ____%. correct answers50% The number of receptacles outlets for guests rooms in hotels and motels shall not be less than that required for a dwelling unit. These receptacles can be located to be convenient for permanent furniture layout but at least two receptacles outlets shall be readily accessible. correct answers
Fixed in place X-ray equipment properly supplied by a branch circuit rated at not over ____Amps shall be permitted to be supplied through a suitable attachment plug cap and hard service cable or cord. correct answers30Amps When service disconnecting means is a power-operated switch or circuit breaker, it shall be able to be opened by hand in the event of a —— —— ——. correct answerspower supply failure. Open wiring on insulator is a ____ wiring method using cleats, knobs, and flexible tubing for protection and support of single insulated conductors run in or on buildings. correct answersPermanent Inverse time is a term indicated that is an intentional delay in the tripping action of the circuit breaker, which decreases as the magnitude of the current increases. correct answers An insulated grounded conductor of 6AWG or smaller shall be identified by a continuous white or gray outer finish, or by three continuous white stripes on other than green insulation along its entire length. correct answers Equipment associated with the electrical installation can be located above or below other electrical equipment within their working space when the associated equipment does not extend more than 6'inches from the front of the electrical equipment. correct answers How many receptacle are required within the perimeter of a balcony, deck or porch with a usable area of less than 20 SQ.ft. One correct answers The minimum headroom of working spaces about motor control center is 6 1/2ft. correct answers At least one entrance to enclosures for electrical installations shall not be less than 30 inches wide and 6ft high shall be provided to give access to the working space around the electrical equipment over 600V nominal. correct answers
What is the minimum height for a vertical overhead clearance for a service drop conductors over residential property and driveways with garage, not subject to truck traffic where the voltage does not exceed 300V. 12"ft correct answers Open conductors installed outside shall be separated from open conductors of other circuits or systems by not less than 36"inches. correct answers What is the minimum thickness of a transformer vault floor made up with bricks or cement filled blocks? 6"inch (brick),8"inch(concrete) correct answers Underground service conductors that are not encased in concrete and that are buried 30"inches or more below grade, shall have their location identified by a warning ribbon that is placed in the trench at least 12"INCHES above the underground installation for 40KV correct answers Branch circuit conductor that supply a single motor used in a continuous duty application shall have a ampacity of not less than 125% of the motors full-load current. correct answers Where service equipment totaling 1000KV, or larger is installed separately, or as part of a switchboard, the room in which such switchboard is located shall be constructed of non combustible materials having a two hour fire rating and shall be of dimensions adequate to house the switchboard and to provide the following minimum clearance: at least 5'ft in front of the switchboard if it is in one line, and at least 7'ft in front of the board if board are installed facing each other. correct answers Where service equipment totaling 1000KVA, or larger is installed separately, or as part of a switchboard, the room in which such switchboard is located shall be constructed of noncombustible materials having a two hour fire rating and shall be of dimensions adequate to house the switchboard and to provide the following minimum clearance: At least 12"inches from the floor to any energized part of the switchboard, except by special permission. correct answers Bending radius in type AC cable shall be made such that the cable is not damaged. The radius of the curve of the inner edge of any bend shall not be less than 5 times the diameter of the type AC cable. correct answers What is the minimum size overhead service drop conductors in copper? correct answers#8awg
How many switches will be needed to control a light fixture from five different locations? correct answers2-3 ways and 3-4 ways The grounding of communication wires should be run to the grounding electrode: in a straight line correct answers Service lateral conductors that supply power to limited loads of a single branch circuit such as a small polyphase power, controlled water heater, and similar loads shall not be smaller than 8AWG copper. correct answers Each general care area patient bed location shall be provided with a minimum of 4 receptacles which can be single, duplex, or a combination of both. correct answers Dry type transformer installed indoors rated over 35KV shall be installed in a vault. correct answers Flat top underfloor raceways over 4 inches, but less 8 inches wide, with a minimum 1 inch spacing between raceway, shall be covered with concrete to a depth of not less than 1 inch. Raceway spaced less than 1 inch apart shall be covered with a concrete to a depth of 1 1/2"inches. correct answers For straight pulls, the length of a pull box shall not be less than 8 times the outside diameter, over the sheath, of the largest shielded or lead covered conductors or cable entering the box on system over 600V correct answers For switchboard that are not totally enclosed, a space of 36"inches or more shall be provided between the top of the switchboard and any combustible ceiling. correct answers A disconnecting means that serves a hermetic refrigerant motor compressor shall have an ampere rating of at least 115% of the nameplate rated load current to branch circuit selection current, whichever is greater. correct answers Knife switches rated for more than 1200A at 250V or less, and at over 600A at 251 to 600V, shall be used only as: Shall not be opened under load , Isolating Switch. correct answers
Class 2 and class 3 cables listed as suitable for general purpose use with the exception of riser, ducts, plenums, and other spaces used for environmental air, shall be Type CL2 and CL3. correct answers Branch circuit conductors with in 3"inches of a ballast shall have an insulation temperature rating not lower than 90C degree or 194F degree correct answers Communication circuits shall have a minimum grounding conductor of 12AWG. correct answers When mounting light fixture supported by EMT over a hot tub protected by GFCI must have a height of. Not allowed in NYC. correct answers How many #10 conductors can be legally installed in a 4"inch square box, 2"1/8 deep? correct answers When installing receptacles around the pool they should be set back from the inside wall of not less than 6'ft. correct answers What kind of circuit must the sump pump and lights in the elevator pit be connected to :separate branch CKT/ GFCI line side correct answers When using a grounding conductor it should not be smaller than #14 copper insulated solid or stranded. correct answers Where practicable a separation of at least 6ft shall be maintained between communication wires and cables on building and lighting conductors. correct answers When using #12THHN or THWN which are both rated for the 90 degree and when you look at the table 300.15 what is the maximum overcurrent protection that can be used for general wiring? 20A fuse or circuit breaker correct answers When shall it be permitted to use track lighting with receptacles at each end in a public bathroom? Not allowed in bathrooms correct answers
