Part M: Code Book Questions
Article 600: Electric Signs And Outline Lighting
1.! Electric signs, section signs, and outline lighting - fixed, mobile, or portable - shall be ____.
!
!
(a) listed!
(b) installed in conformance with the listing!
(c) approved by special permission
(d) all of these
2.! Electric signs and outline lighting systems shall be marked with ____.
!
!
(a) input voltage and current rating!
(b) voltage and wattage rating!
(c) wattage and current rating
(d) all of the above
3.! Each commercial building and each commercial occupancy accessible to pedestrians shall have at
! least one outside sign outlet branch circuit rated at ____ amps.
!
!
(a) 15!
(b) 20!
(c) either 15 or 20
(a) none of the above
4.! A branch circuit feeding a sign which has a combination of lamps and transformers shall not
! exceed a rating of ____ amps.
!
(a) 15 !
(b) 20!
(c) 30!
(d) 50
5.! Circuits containing neon tubing installations exclusively shall not be rated in excess of ____ amps.
!
(a) 20 !
(b) 30!
(c) 40!
(d) 50
6.! ____ shall be controlled by an externally operable switch or breaker which will open all
! ungrounded conductors.
!
!
!
!
(a)!Signs
(b)!Outline lighting system
(c)! Each feeder or branch circuit supplying a sign or outline lighting system
(d)!all of these
7.! Signs operated by electronic or electromechanical controllers located external to the sign shall
! have a disconnecting means located ____.
!
!
!
!
(a)!within sight of sign
(b)!in the same enclosure with the controller
(c)! only in the controller
(d)!within sight of sign and in the same enclosure with the controller
8.! Switches, flashers, and similar devices controlling transformers shall be either rated for
! controlling inductive load(s), or have an ampere rating not less than ____ the ampere rating
! of the transformer.
!
!
(a) twice!
(b) two and one-half !
(c) three
(d) four
9.! Sign lighting system equipment shall be at least ____ feet above areas accessible to vehicles !unless
! protected from physical damage.
!
!
(a) 22’!
(b) 18’!
(c) 15’
(d) 14’
10.!Electric sign enclosures may be constructed of wood or adjacent combustible materials
! if ____.
!
!
(a) not less than 1” from lampholders!
!
(b) not less than 1-1/2” from lampholders! !
(c) not less than 2” from lampholders
(d) wood is not permitted at all
11.!Signs in wet locations shall be weatherproof and ____.
!
!
!
!
(a) have drain holes shall not be smaller than 1/4’
(b) have at least one drain hole in every low point
(c) have drain holes positioned so there is no external obstructions
(d) all of the above
12.!Where GFCI protection is located in the power supply cord for an outdoor portable sign, the
! ground-fault circuit interrupter shall be located within ____ inches of the attachment plug.
!
!
(a) 6”!
(b) 12”!
(c) 18”
(d) 24”
13.!Transformers and electronic power supplies shall have secondary current ratings not more than
! ____ milliamperes.
!
!
(a) 300!
(b) 350!
(c) 400
(d) 600
14.!A spacing of not less than ____ inch shall be maintained between neon tubing and the nearest
! surface, other than its support.
!
!
(a) 1/4” !
(b) 1/2” !
(c) 3/8”
(d) 5/16”
Article 604: Manufactured Wiring Systems
15.!A manufactured wiring system shall have receptacles that are ____.
!
!
(a) of the locking type!
(b) uniquely polarized!
(c) part of a listed assembly
(d) all of these
Article 605: Office Furnishings
16.!When a cord and plug connection is provided for connecting lighting equipment for use with
! relocatable wired office partitions, the cord length shall not be longer than ____ feet.
!
!
(a) 3’!
(b) 6’!
(c) 9’
(d) 12’
17.!When installing office furnishings receptacle outlets ____ be located in lighting accessories.
!
!
(a) single-type only can !
(b) duplex-type only can !
(c) shall
(d) shall not
18.!Free standing office partitions are permitted to have outlets supplied by a single flexible cord as
! long as ____.
!
!
!
!
(a)!extra hard usage type are used
(b)!#12 or larger conductors are used with an insulating equipment grounding conductor
(c)! the cord does not exceed 2’ in length
(d)!all of these
19.!In an office with relocatable partitions, individual partitions or groups of interconnected
! individual partitions shall not contain more than ____ 15 ampere, 125 volt receptacle outlets.
!
!
(a) 9 !
(b) 10 !
(c) 13
(d) unlimited
Article 610: Cranes And Hoists
20.!The ampacity of a #12 THW conductor used with a 15-minute motor on a monorail hoist installed
! in a raceway containing a total of four current-carrying conductors would be ____ amps.
!
!
(a) 20!
(b) 30!
(c) 33
(d) 37
21.!Bridge wire contact conductors for cranes shall be kept at least 2-1/2 inches apart, and where the
! span exceeds 80 feet, insulating saddles shall be placed at intervals not exceeding ____ feet.
!
!
(a) 80’!
(b) 70’!
(c) 60’
(d) 50’
22.!A crane rail when used as a conductor shall be ____.
!
!
!
!
(a)!effectively grounded at the transformer
(b)!grounded by fittings used for suspension or attachment of the rail
(c)! attachment of the rail to a building or structure
(d)!any of these
23.!A ____ and bridge frame shall not be considered as electrically grounded through the bridge and
! trolley wheels and its respective tracks. A separate bonding conductor shall be provided.
!
!
(a) trolley frame!
(b) track!
(c) trolley wheels
(d) none of these
Article 620: Elevators, Dumbwaiters, Escalators, Moving Walks, Wheelchair Lifts
24.!Branch circuits for heating and air-conditioning equipment located on an elevator car shall not
! have a circuit voltage in excess of ____ volts.
!
!
(a) 120 !
(b) 240 !
(c) 480
(d) 600
25.!Conductors to the hoistway door interlocks from the hoistway riser shall be ____.
!
!
(a) flame retardant!
(b) type SF or equivalent!
(c) rated 200˚C (392˚F)
(d) all of these
26.!The minimum size conductor for lighting elevator circuits traveling cables is ____.
!
!
(a) #12 !
(b) #14 !
(c) #16
(d) #18
27.!The demand factor to be applied in sizing the feeder that supplies power to seven elevators with a
! 50 percent duty cycle is ____.
!
!
(a) 1.0!
(b) .82!
(c) .79
(d) .77
28.!A separate branch circuit shall supply the ____, receptacles, auxiliary power source, and
! ventilation on each elevator car.
!
!
(a) motor!
(b) car lights!
(c) emergency phone
(d) emergency exit
29.!In an elevator machine room at least ____ receptacle(s) shall be installed.
!
!
(a) one duplex !
(b) two duplex !
(c) one single
(d) two single receptacles
30.!Traveling cables shall be supported by looping the cables around supports for unsupported
! lengths up to ____ feet.
!
!
(a) 300’!
(b) 200’!
(c) 150’
(d) 100’
31.!Escalator motors shall be classified as ____.
!
!
(a) intermittent !
(b) varying !
(c) short-time
(d) continuous
32.!Duty on wheelchair lift and stairway chair lift driving machine motors shall be rated
! as ____.
!
!
(a) continuous !
(b) intermittent !
(c) varying
(d) short-time
33.!Elevators shall have a single means for disconnecting all ungrounded main power supply
! conductors for each unit, this includes the ____.
!
!
(a) emergency power system!
(b) standby power system!
(c) normal power systems
(d) all of these
Article 625: Electric Vehicle Charging Systems
34.!Which of the following is not considered an electric vehicle by the Code ?
!
!
(a) fork lift!
(b) vans!
(c) busses
(d) trucks
35.!The electric vehicle supply equipment cable shall have an overall length not exceeding ____ feet.
!
(a) 12’!
(b) 25’!
(c) 50’!
(d) 100’
36.!The maximum height for the coupling means to an indoor electric vehicle charging station is
! ____ feet.
!
!
(a) 1’!
(b) 1-1/2’!
(c) 4’
(d) 8’
37.!Indoor electric vehicle charging stations shall include _____.
!
!
(a) supply equipment!
(b) exhaust equipment!
(c) venting directly to the outdoors
(d) all of these
Article 630: Electric Welders
38.!The N.E.C. covers electric ____.
!
!
(a) arc welders!
(b) resistance welding apparatus!
(c) gas welders
(d) arc welders and resistance welding apparatus
39.!Conductors which supply one or more ac transformers or dc rectifier arc welders shall be
! protected by an overcurrent device rated or set at not more than ____ percent of the conductor
! rating.
!
!
(a) 70%!
(b) 80%!
(c) 125%
(d) 200%
40.!The ampacity for the supply conductors for a resistance welder with a duty cycle of 15% and a
! primary current of 21 amps is ____ amps.
!
!
(a) 9.45 !
(b) 8.19 !
(c) 6.72
(d) 5.67
41.!Conductors that supply one or more welders shall be protected by an overcurrent device rated or
! set at not more than ____ of the conductor rating.
!
!
(a) 80% !
(b) 125% !
(c) 150%
(d) 300%
42.!Insulation of conductors intended for use in the secondary circuit of electric welders shall
! be ____.
!
!
(a) flame retardant !
(b) silicone !
(c) TBS
(d) any of the above
Article 640: Audio Signal Processing Equipment
43.!The N.E.C. covers ____.
!
!
(a) electronic organs !
(b) speech-input systems !
(c) audio signal generation
(d) all of these
44.!A public address system is normally located in ____.
!
!
(a) restaurants!
(b) hotels!
(c) business offices
(d) any of these
Article 645: Information Technology Equipment
45.!The branch circuit conductors to one or more units of a data processing system shall have an
! ampacity of ____ percent of the total connected load.
!
!
(a) 80%!
(b) 100%!
(c) 125%
(d) 200%
46.!Cables and receptacles associated with the information technology equipment shall be permitted
! under a raised floor provided ____.
!
!
!
!
(a)!the raised floor is of suitable construction and the underfloor area is accessible
(b)!ventilation in the underfloor area is used only for information technology equipment
(c)! openings in raised floors for cables protect cables from abrasions
(d)!all of these
Article 650: Pipe Organs
47.!A main common return conductor in the electromagnetic supply of a pipe organ shall not be less
! than ____ AWG.
!
!
(a) #14!
(b) #18!
(c) #20
(d) #22
48.!Overcurrent protection for electric organ circuits (26 & 28 AWG) shall not exceed ____ amps.
!
!
(a) 6!
(b) 8!
(c) 10
(d) 15
Article 660: X-Ray Equipment
49.!When installing X-ray equipment connected to 120 volt branch circuit, a grounding type
! attachment plug cap and receptacle of proper rating shall be permitted to serve as a disconnecting
! means if the branch circuit is rated ____ amperes or less.
!
!
(a) 15 !
(b) 20 !
(c) 30
(d) 50
50.!The ampacity requirements of x-ray equipment shall be based on ____ percent of the momentary
! rating of the equipment.
!
!
(a) 40%!
(b) 50%!
(c) 70%
(d) 80%
51.!The rated ampacity of conductors and overcurrent devices of a feeder for two or more branch
! circuits supplying X-ray units shall not be less than 100 percent of the momentary demand rating
! of the two largest X-ray apparatus plus ____ percent of the momentary ratings of other X-ray
! apparatus.
!
!
(a) 20%!
(b) 50%!
(c) 80%
(d) 90%
52.!Size #18 or #16 fixture wires, and flexible cords shall be permitted for the control and operating
! circuits of X-ray and auxiliary equipment where protected by not larger than ____ ampere
! overcurrent devices.
!
!
(a) 6 !
(b) 15 !
(c) 20
(d) 30
53.!All high voltage parts, including X-ray tubes, shall be mounted within ____ enclosures.
!
!
(a) metallic !
(b) nonmetallic !
(c) grounded
(d) ventilated
Article 668: Electrolytic Cells
54.!A(an) ____ is a tank or vat in which electrochemical reactions are caused by applying electrical
! energy for the purpose of refining or producing usable materials.
!
!
(a) electrolytic cell !
(b) heating boiler !
(c) radiant heater
(d) duct heater
55.!Remote crane or hoist controls that may introduce hazardous electrical conditions into the cell line
! working zone shall employ one or more of the following systems.
!
!
!
!
(a)!isolated and ungrounded control circuit in accordance with section 668-21(A)
(b)!nonconductive rope operator
(c)! radio
(d)!any of these
56.!____ electrolytic cell electrical equipment enclosures shall be permitted where a natural draft
! ventilation system prevents the accumulation of gases at cell lines.
!
!
(a) Rear accessible !
(b) Isolating type !
(c) General purpose
(d) Flush mounted
Article 669: Electroplating
57.!Direct current conductors used for electroplating shall be protected from overcurrent by ____.
!
!
!
!
(a)!fuses or circuit breakers
(b)!a current sensing device which operates a disconnecting means
(c)! other approved means
(d)!any of these
Article 670: Industrial Machinery
58.!Industrial machinery is defined as ____.
!
!
!
!
(a)!a power-driven machine not portable by hand
(b)!a portable machine used to shape or form plastic
(c)! a group of independent machines
(d)!all of these
Article 675: Electric Irrigation Machines
59.!Taps to individual motors on an irrigation machine branch circuit shall have a minimum size of at
! least ____ copper and not more than 25 feet in length.
!
!
(a) #8!
(b) #10!
(c) #12
(d) #14
60.!The equivalent continuous current rating for the selection of branch circuit conductors and branch
! circuit devices for a center pivot irrigation machine shall be equal to 125 percent of the motor
! nameplate full load current rating of the largest motor plus ____ of the sum of the motor
! nameplate full load current ratings of all remaining motors.
!
!
(a) 60% !
(b) 75% !
(c) 80%
(d) 100%
Article 680: Swimming Pools And Fountains
61.!Wading pools are those that are constructed on or above the ground and are capable of holding
! water to a maximum depth greater than ____ inches.
!
!
(a) 18” !
(b) 30” !
(c) 42”
(d) 48”
62.!Overhead service drop conductors shall have a horizontal clearance of ____ feet from a pool.
!
!
(a) 8’!
(b) 10’!
(c) 15’
(d) 20’
63.!A pool recirculating pump motor receptacle shall be generally permitted not less than ____ feet
! from the inside walls of the pool (without GFCI protection).
!
!
(a) 5’!
(b) 8’!
(c) 10’
(d) 15’
64.!A dwelling unit receptacle located within ____ feet of the inside walls of a pool shall be protected
! by a ground-fault circuit-interrupter.
!
!
(a) 8’!
(b) 10’!
(c) 15’
(d) 20’
65.!Ground-fault circuit-interrupters shall be installed in the branch circuit supplying underwater
! pool lighting luminaires (fixtures) operating at more than ____ volts.
!
!
(a) 12 !
(b) 15 !
(c) 24
(d) 50
66.!Luminaires (lighting fixtures) mounted in walls shall be installed with the top of the luminaire
! lens not less than ____ inches below the normal water level of the pool.
!
!
(a) 12”!
(b) 15”!
(c) 18”
(d) 24”
67.!Junction boxes for pool lighting shall not be located less than ____ feet from the inside wall of a
! pool unless separated by a fence or wall.
!
!
(a) 3’!
(b) 4’!
(c) 6’
(d) 8’
68.!A junction box connected to a pool forming shell shall be provided with a number of grounding
! terminals that shall be ____ the number of conduit entries.
!
!
(a) one more than!
(b) two more than!
(c) equal to
(d) none of these
69.!A pool panelboard, not part of the service equipment, shall have a grounding conductor installed
! between ____.
!
!
!
!
(a)!its grounding terminal and a separate ground
(b)!its grounding terminal and a ground rod
(c)! its grounding terminal and the grounding terminal of the service equipment
(d)!its grounding terminal and bonding grid
70.!Which of the following pool parts are required to be bonded together ?
!
!
!
!
(a)!All metal forming shells and mounting brackets of a no-niche fixture.
(b)!All fixed metal parts within 5 feet of the inside walls.
(c)! All metal parts of an underwater sound system.
(d)!all of these
71.!What size conductor shall be connected between the ground grid and all metal parts of swimming
! pools ?
!
!
(a) #4!
(b) #6 !
(c) #8
(d) #10
72.!For underwater audio equipment where rigid nonmetallic conduit is used a ____ AWG copper
! bonding jumper shall be be terminated in the forming shell and the junction box.
!
!
(a) #12 copper insulated!
(b) #10 copper uninsulated!
(c) #14 insulated
(d) #8 insulated
73.!Which type of heating equipment are not permitted to be installed for deck area heating at a
! swimming pool ?
!
!
(a) Unit heaters!
(b) Radiant heaters!
(c) Radiant heating cables
(d) all of these
74.!All electric equipment, including power supply cords used with storable pools shall be protected
! by ____.
!
!
(a) fuses !
(b) circuit breakers !
(c) double-insulation
(d) ground-fault circuit interrupters
75.!A lighting fixture installed in or on the wall of a storable pool shall ____.
!
!
!
!
(a)!have a fixture lamp that operates at 15 volts or less
(b)!have an impact resistant polymeric lens, fixture body, and transformer enclosure
(c)! have a transformer with a primary rating not over 150 volts
(d)!all of these
76.!At least one receptacle shall be located a minimum of 5 feet from and not more than ____ feet from
! the inside wall of a spa or hot tub installed indoors.
!
!
(a) 6’!
(b) 10’!
(c) 12’
(d) 20’
77.!In a swimming pool, electric equipment that depends on submersion for safe operation shall be
! protected against overheating by a/an ____.
!
!
(a) toggle switch !
(b) thermal overload !
(c) in line fuse
(d) low water cut off
78.!The maximum length of exposed cord in a fountain shall be ____ feet.
!
!
(a) 10’!
(a) 6’!
(b) 4’
(c) 3’
79.!Lighting fixtures located in the same room and not directly associated with a hydromassage
! bathtub shall be installed in accordance with the requirements covering the installation of that
! equipment in ____.
!
!
(a) swimming pool area !
(b) kitchen !
(c) exercise room
(d) bathrooms
Article 685: Integrated Electrical Systems
80.!A(an) ____ is a unitized segment of an industrial wiring system in which orderly shutdown is
! necessary to ensure safe operation.
!
!
(a) emergency standby electrical system ! !
(b) selective load pick-up electrical system! !
(c) critical branch electrical system
(d) integrated electrical system
81.!Two-wire D.C. circuits in integrated electrical system shall be permitted to be ____.
!
(a) ungrounded !
(b) uninsulated !
(c) over 600 volts!
(d) none of these
Article 690: Solar Photovoltaic Systems
82.!A(an) ____ is a device that changes D.C. input to A.C. output.
!
!
(a) inverter !
(b) power conditioning unit !
(c) power conversion system
(d) all of these
83.!The basic photovoltaic device which generates electricity when exposed to light is a ____.
!
(a) battery !
(b) diode!
(c) solar cell!
(d) mandrel
84.!Roof-mounted photovoltaic arrays located on dwellings shall be provided with ____ to reduce fire
! hazard.
!
!
(a) ground-fault protection!
(b) automatic extinguishing system!
(c) alarms
(d) smoke detectors
85.!On solar photovoltaic system ampacity of conductors and overcurrent devices shall not be less
! than ____ percent of the maximum current.
!
(a) 100% !
(b) 125%!
(c) 150%!
(d) 200%
86.!For a photovoltaic power source one conductor of a 2-wire system rated over ____ volts and the
! reference (center-tap) conductor of a bipolar system shall be solidly grounded.
!
(a) 50 !
(b) 60!
(c) 90!
(d) 100
Article 695: Fire Pumps
87.!Supply service circuit conductors to a fire pump shall ____.
!
!
!
!
(c)! be kept entirely independent of all other wiring
(a)!supply only directly associated fire pump system loads
(b)!be protected to resist potential damage by fire
(d)!all of these
88.!Storage batteries for diesel engine drives for fire pumps shall be ____.
!
!
(a) supported above the floor!
(b) secured against displacement!
(c) located where not subject to physical damage
(d) all of these