Master Electrician's Exam Prep Guide Final Exam #1

Information technology equipment is permitted to be connected to a branch circuit by flexible cord-and-attachment plug cap, if the cord does NOT exceed ____ in length. A. 6 ft. B. 8 ft. C. 10 ft. D. 15 ft.

D. 15 ft. pg. 547

Given: a one family dwelling to be built will have 4,000 sqft. of livable space, a 600 sqft. garage, a 400 sqft. open porch, a 2,000 sqft. unfinished basement (adaptable for future use), three small appliance branch circuits and a branch circuit for the laundry room. Determine the demand load, in VA, general lighting and receptacle loads using the standard method of calculation for a one family dwelling. A. 10,350 VA B. 9,825 VA C. 7,350 VA D. 24,000 VA

A. 10,350 VA pg. 74, 75, 76, 77

It shall be permissible to compute the feeder and service loads for dwellings using the optimal method of calculations for dwellings instead of the general method of calculations for dwellings, if the dwelling unit is supplied with a single-phase, 120/240 volt service and the load is at LEAST ____ or greater. A. 100 amperes B. 125 amperes C. 200 amperes D. 150 amperes

A. 100 amperes pg. 79

Where used outside of a building, aluminum or copper-clad aluminum grounding electrode conductors shall not be terminated WITHIN ____ of the earth. A. 18 in. B. 24 in. C. 3 ft. D. 6 ft.

A. 18 in. pg. 122

A commercial kitchen is to contain the following listed cooking related equipment: * one - 14 kW range * one - 5 kW water heater * one - .75 kW mixer * one - 2.5 kW dishwasher * one - 2 kW booster heater * one - 2 kW broiler Determine the demand load, in kW, after applying the demand factors for the kitchen equipment. A. 19 kW B. 26.25 kW C. 18.38 kW D. 17.06 kW

A. 19 kW pg. 77, 79

When flat conductor cable is used for general purpose branch circuits, the MAX. rating of the circuits shall be ____. A. 20 amperes B. 30 amperes C. 15 amperes D. 10 amperes

A. 20 amperes pg. 193

Where exceptions are not to be applied, determine the MIN. required length of a junction box that has a trade size 3.5 in. conduit containing four size 250 kcmil conductors, pulled through the box for a 90 deg. angle pull. A. 21 in. B. 24 in. C. 28 in. D. 34 in.

A. 21 in. pg. 188

Pendant conductors having a length of at LEAST _____ or more, shall be twisted together where not cabled in a listed assembly. A. 3 feet B. 4 feet C. 5 feet D. 6 feet

A. 3 feet pg. 280

In regard to outside branch circuits of overhead spans of open individual conductors for 1000 volts or less up to 50 feet in length, the NEC mandates the conductors to be NOT less than ____ copper in size. A. 12 AWG B. 10 AWG C. 8 AWG D. 6 AWG

B. 10 AWG pg. 82

In regard to emergency and legally required standby systems, transfer switches shall be ____ and approved by the authority having jurisdiction. A. manual B. automatic C. nonautomatic D. red in color

B. automatic pg. 606, 612

The disconnecting switch or circuit breaker for electric signs and outline lighting systems shall open all ____ conductors simultaneously on multi-wire branch circuits supplying the sign or outline lighting system. A. grounded and ungrounded B. grounded, ungrounded and grounding C. grounding, ungrounded and bonding D. ungrounded

D. ungrounded pg. 509

Outlets supplying permanently installed swimming pool pump motors from single phase, 15- or 20-ampere, 120- or 240-volt branch circuits, shall be provided with Class A GFCI protection ____. A. where installed outdoors B. when cord-and-plug connected C. when direct (hard wired) connected D. where any of the above conditions exist

D. where any of the above conditions exist pg. 567

Flexible cord and cables shall be permitted to be attached to building surfaces ____. A. under no circumstances B. where concealed C. where used as a substitute for the fixed wiring of a structure D. where the length of the cord or cable from a busway plug-in device to a suitable tension "take-up" support device does not exceed 6 ft.

D. where the length of the cord or cable from a busway plug-in device to a suitable tension "take-up" support device does not exceed 6 ft. pg. 259, 225

Each luminaire installed in Class III, Divisions 1 and 2 locations shall be clearly marked to show the max. wattage of the maps that shall be permitted without exceeding an exposed surface temperature of ____ under normal conditions of use. A. 329 deg. F B. 165 deg. F C. 144 deg. F D. 125 deg. F

A. 329 deg. F pg. 38

Determine the MIN. size Type SOW flexible cord that may be used to supply a 30 hp, 3 phase, 480 volt, continuous-duty , ac motor from the motor controller to the motor terminations. Assume voltage-drop and elevated ambient temperature are not considerations. A. 4 AWG B. 6 AWG C. 8 AWG D. 10 AWG

A. 4 AWG pg. 308, 309, 313, 333, 257

What is the MIN. dimension required by the NEC for a working space containing live parts on both sides of the equipment that will require examination and maintenance of the equipment when energized and operating at 480-volts between conductors? A. 4 ft. B. 3 ft. C. 6 ft. D. 5 ft.

A. 4 ft. pg. 50

Where a mobile home park has 25 mobile home lots calculated at 15,000 VA each, determine the MIN. required ampacity required for the ungrounded service-entrance conductors. A. 400 amperes B. 380 amperes C. 820 amperes D. 782 amperes

A. 400 amperes pg. 479

For other than listed low-voltage luminaires not requiring grounding, all electrical equipment within a fountain or within ____ of the inside wall of a fountain shall be grounded. A. 5 ft. B. 6 ft. C. 8 ft. D. 10 ft.

A. 5 ft. pg. 577

Where explosionproof equipment is provided with metric threaded entries, which of the following methods is approved to adapt the entries from metric threads to NPT threads? A. Approved adapters from metric threads to NPT threads shall be used B. Tap the metric threaded entries to NPT threads C. Thread the conduit with metric threads D. All of these are approved methods

A. Approved adapters from metric threads to NPT threads shall be used pg. 367

In regard to an isolated grounding type receptacle, the reason the insulated isolated grounding conductor is purposely not bonded to the outlet box is ____. A. for the reduction of electrical noise B. to ensure the circuit breaker will trip in the event of a ground-fault C. to prevent the circuit breaker from tripping in the event of a ground fault D. for the reduction of voltage drop

A. for the reduction of electrical noise pg. 135

In the critical care (Category 1) spaces of a health care facility, each patient bed location shall be provided with a MIN. of ____ "hospital grade" receptacles. A. fourteen B. twelve C. ten D. eight

A. fourteen pg. 439

In regard to emergency systems, where internal combustion engines are used as the prime movers, they shall NOT be solely dependent on a public utility gas system for their fuel supply, unless ____. A. it is acceptable to the authority having jurisdiction B. the gas system is listed and approved C. the gas system and electrical utility are jointly owned and maintained D. none of these apply

A. it is acceptable to the authority having jurisdiction pg. 609

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. light blue B. orange C. yellow D. purple

A. light blue pg. 388

Which of the following is NOT required to be marked on the nameplate of a transformer? A. overcurrent protection B. manufacturer C. kVA rating D. voltage

A. overcurrent protection pg. 346

Each multiwire branch circuit shall be provided with a means that will ____ at the point where the branch circuit originates. A. simultaneously disconnect all ungrounded conductors B. not simultaneously disconnect all ungrounded conductors C. simultaneously disconnect all grounded and ungrounded conductors D. simultaneously disconnect all grounded, ungrounded and grounding conductors

A. simultaneously disconnect all ungrounded conductors pg. 60

A kitchen with a total demand load of 54,000 VA is to be added to an existing church. The electrical system is 208Y/120 volts, 3 phase. What MIN. size THWN copper feeder conductors are required for the kitchen addition? A. 1 AWG B. 1/0 AWG C. 2/0 AWG D. 3/0 AWG

B. 1/0 AWG pg. 161

Where an air conditioning unit is supplied with size 6 AWG CU conductors and protected by a 60 ampere circuit breaker, the MIN. wire-type size CU equipment grounding conductor permitted for this installation is ____. A. 12 AWG B. 10 AWG C. 8 AWG D. 6 AWG

B. 10 AWG pg. 133

Portable structures for fairs, carnivals and similar events shall not be located under and no closer than ____ horizontally of conductors operating in excess of 600 volts. A. 22.5 ft. B. 15 ft. C. 10 ft. D. 12 ft.

B. 15 ft. pg. 463

Given: a commercial building is to be supplied from a transformer having a 480Y/277-volt, 3 phase primary and a 208Y/120-volt, 3 phase secondary. The secondary will have a balanced computed demand load of 416 amperes per phase. The transformer is required to have a MIN kVA rating of ____. A. 100 kVA B. 150 kVA C. 86 kVA D. 200 kVA

B. 150 kVA

Given: four size 2/0 AWG conductors contained in a trade size 2 in. conduit enter a pull box on the "east" side. The conductors then make a U turn and exit in a trade size 2.5 in. conduit on the same side. What is the MIN. distance required, in inches, from the "east" side of the pull box to the opposite "west" side of the box? A. 12 inches B. 17 inches C. 15 inches D. 18 inches

B. 17 inches pg. 188

The depth of the working space in front of a 120-volt, single-phase, fire alarm control panel (FACP) is required to be at LEAST ____. A. 2.5 ft. B. 3 ft. C. 3.5 ft. D. 4 ft.

B. 3 ft. pg. 50

The ampacity adjustment factors for conductors addressed in Section 310.15(C)(1) of the NEC are not required to be applied when the conductors are installed in a metal wireway unless, the number of current-carrying conductors within the wireway exceeds at least ____ at any cross-section area of the wireway. A. 20 B. 30 C. 35 D. 24

B. 30 pg. 229

Where installed for a commercial occupancy, determine the MIN. size THWN copper conductors required from the terminals of a 3 phase, 277/480 volt, 4 wire, 200 kW generator to the first distribution device(s) containing overcurrent protection. Assume the design and operation of the generator does NOT prevent overloading. A. 250 kcmil B. 300 kcmil C. 400 kcmil D. 500 kcmil

B. 300 kcmil pg. 341, 161

What is the MIN. permitted sill or curb height of a transformer vault doorway? A. 2 in. B. 4 in. C. 6 in. D. 8 in.

B. 4 in. pg. 348

here required, conduit seals installed in Class I, Division 1 & 2 locations shall have the min. thickness of the sealing compound not less than the trade size of the sealing fitting and , in no case less than ____. A. 1/2 in. B. 5/8 in. C. 3/4 in. D. 1 in.

B. 5/8 in. pg. 371

For capacitors over 1,000 volts, a means shall be provided to reduce the residual voltage to ____ after the capacitor is disconnected from the source of power. A. 50 volts or less within 1 minute B. 50 volts or less within 5 minutes C. 24 volts or less within 5 minutes D. 12 volts or less within 1 minute

B. 50 volts or less within 5 minutes pg. 351

When two ground rods are used to form the entire grounding electrode system of a building, the grounding conductor that bonds the two rods together shall NOT be required to be larger than size ____ copper, regardless of the size of the service-entrance conductors. A. 8 AWG B. 6 AWG C. 4 AWG D. 2 AWG

B. 6 AWG pg. 124

Where Type SE service-entrance cable with ungrounded conductors of sizes 10 AWG or smaller is used for interior wiring as a substitute for Type NM cable is installed in thermal insulation, the ampacity shall be in accordance with the ____ conductor temperature rating. A. 40 deg. C B. 60 deg. C C. 75 deg. C D. 0 deg. C

B. 60 deg. C pg. 203

Determine the MAX. ampere setting permitted for an overload protective device responsive to motor current, where used to protect a 20 hp, 240-volt, 3 phase, induction type ac motor with a temperature rise of 48 deg. C and a FLA of 54 amperes indicated on the nameplate. A. 54 amperes B. 70.2 amperes C. 62.1 amperes D. 75.6 amperes

B. 70.2 amperes pg. 309, 316

Fuses shall NOT be permitted to be connected in parallel where ____. I. they are factory assembled and listed as a unit II. they are installed by a technician on the jobsite A. I only B. II only C. neither I nor II D. both I and II

B. II only pg. 100

Under which, if any, of the following conditions is the neutral conductor to be counted as a current carrying conductor? I. when it is only carrying the unbalances current from other conductors of the same current. II. when it is the neutral conductor of a 3 phase, wye connected system that consist of nonlinear loads. A. I only B. II only C. neither I nor II D. both I and II

B. II only pg. 160

In the garage of a dwelling unit, a 125 volt, single phase, 15 ampere receptacle installed in the ceiling provided for the garage door opener must be ____. I. a single receptacle II. GFCI protected for personnel A. I only B. II only C. either I or II D. neither I nor II

B. II only pg. 62

When a motor controller enclosure is installed outdoors and is subject to be exposed to sleet, it shall have a MIN. rating of ____, where the controller mechanism is required to be operable when ice covered. A Type 3 B. Type 3S C. Type 3R D. Type 3SX

B. Type 3S pg. 53

When buried raceways pass under streets, roads, or driveways, the MIN. cover requirement ____. A. decrease if installed in rigid metal conduit B. do not change in regard to wiring methods used C. shall be increased for direct burial cables D. can be increased, decreased or remain the same, depending on the wiring method used

B. do not change in regard to wiring methods used pg. 143

For nonshielded conductors of over 1000 volts, the conductors shall NOT be bent to a radius of less than ____ times the overall conductor materials. A. six B. eight C. ten D. twelve

B. eight pg. 149

An approved method of protection for equipment installed in Class I, Zone 0, hazardous locations is ____. A. purged and pressurized B. encapsulation C. powder filling D. oil immersion

B. encapsulation pg. 391

Where located in Class I, Division 1 locations, transformers containing oil or a liquid that will burn shall be _____. A. enclosed in a fence B. installed in vaults only C. identified for use in Class I locations D. installed in a fire-resistant room

B. installed in vaults only pg. 373

n health care facilities, essential electrical systems shall have a MIN. ____. A. capacity of 200 gallons of fuel for the auxiliary generator B. of two independent sources of power C. of 1 hour back-up time D. capacity 150 kVA

B. of two independent sources of power pg. 440

Determine the MAX. standard size overcurrent protection required for the primary and secondary side of a transformer, when primary and secondary overcurrent protection is to be provided given the following related information. * 150 kVA rating * Primary - 480 volt, 3 phase, 3 wire * Secondary - 208Y/120 volt, 3 phase, 4 wire A. primary - 500 amperes, secondary - 500 amperes B. primary - 450 amperes, secondary - 600 amperes C. primary - 500 amperes, secondary - 450 amperes D. primary - 450 amperes, secondary - 500 amperes

B. primary - 450 amperes, secondary - 600 amperes pg. 343, 344, 100

As a general rule, the MIN. spacing required between live bare metal parts in feeder circuits of 480-volt industrial control panels and bare metal parts of the enclosure is ____. A. 1/2 in. B. 3/4 in. C. 1 in. D. 1 1/4 in.

C. 1 in. pg. 325

At least one structural support member of a building or structure that is direct contact with the earth for at LEAST _____ or more, with or without concrete encasement shall be permitted to be used as a grounding electrode. A. 20 ft. B. 8 ft. C. 10 ft. D. 6 ft.

C. 10 ft. pg. 120

Power distribution blocks shall be permitted in pull and junction boxes having a volume over ____ for connections of conductors where installed in boxes, provided the power distribution blocks do not have uninsulated live parts exposed within the box, whether or not the box cover is exposed. A. 50 cu. in. B. 75 cu. in. C. 100 cu. in. D. 1650 cu. in.

C. 100 cu. in. pg. 188

What MIN. voltage is require after 1.5 hours to serve emergency lighting from a storage battery when the normal source voltage of 120 volts is interrupted? A. 60 volts B. 90 volts C. 105 volts D. 120 volts

C. 105 volts pg. 609

Underground installed service conductors that are not encased in concrete and buried 18 in. or more below grade level, shall have their location identified by a warning ribbon placed at LEAST ____ above the underground installation. A. 6 in. B. 8 in. C. 12 in. D. 18 in.

C. 12 in. pg. 142

Where installed outdoors, dry-type transformers exceeding 112.5 kVA shall NOT be located within ____ of combustible materials of buildings, unless the transformer has Class 155 insulation systems or higher and completely enclosed except for ventilating openings. A. 6 in. B. 10 in. C. 12 in. D. 18 in.

C. 12 in. pg. 346

at least one 125-volt , single phase 15- or 20- ampere rated receptacle outlet shall be installed within 18 inches of the top of a show window of a retail store for each ____ of show window area measured horizontally. A. 8 linear ft. B. 10 linear ft. C. 12 linear ft. D. 15 linear ft.

C. 12 linear ft. pg. 70

What is the MAX. balanced demand load, in VA, permitted to be connected to a new service of commercial building where given the following conditions? I. the service is 208Y/120 volts, 3 phase, with a 600 ampere rated main II. the maximum load must not exceed 80 percent of the ampere rating of the main circuit breaker A. 57,600 VA B. 99,840 VA C. 172,923 VA D. 178,692 VA

C. 172,923 VA

A clearance of NOT less than ____ must be maintained from the maximum water level of a permanently installed swimming pool and messenger-supported tri-plex service-drop conductors of 0-750 volts. A. 10 ft. B. 14.5 ft. C. 19 ft. D. 22.5 ft.

C. 19 ft. pg. 566

A 3 phase, 150 kVA transformer with a 208Y/120-volt secondary has an existing load of 212 amperes on each of the ungrounded phases. What is the MAX. load, in amperes, that may be added to each of the ungrounded secondary phases? A. 416 amperes B. 180 amperes C. 204 amperes D. 250 amperes

C. 204 amperes

What is the MIN. bend radius of trade size 4 in. rigid metal conduit where the bend is not made with a one-shot or full-shoe bender? A. 16 in. B. 18 in. C. 24 in. D. 30 in.

C. 24 in. pg. 695

For circuits of OVER ____ to ground, the electrical continuity of rigid metal conduit or intermediate metal conduit that contain any conductor other than service conductors shall be insured with two locknuts, one inside and one outside the box or cabinet. A. 480 volts B. 300 volts C. 250 volts D. 125 volts

C. 250 volts pg. 126

Where a lighting track is installed with two 4 ft. sections, mounted end to end, how many supports are required? A. 5 B. 4 C. 3 D. 2

C. 3 pg. 285

When supplying a 36,000 VA, 240-volt, single-phase load in an area where the ambient temperature reaches 119 deg. F, determine the MIN, size 75 deg. C rated copper conductors required to supply the load. A. 1/0 AWG B. 2/0 AWG C. 3/0 AWG D. 4/0 AWG

C. 3/0 AWG pg. 161, 159

When intermediate metal conduit is threaded in the field, a standard cutting die with a ____ taper per ft. shall be used. A. 3/8 in. B. 1/2 in. C. 3/4 in. D. 1 in.

C. 3/4 in. pg. 200

Each operating room of a health care facility shall be provided with a MIN. of ____ "hospital grade" receptacles. A. 12 B. 24 C. 36 D. 18

C. 36 pg. 439

Type CMP communications cable of NOT more than ____ in length shall be permitted in ducts specifically fabricated for environmental air if they are directly associated with the air distribution system. A. 8 feet B. 6 feet C. 4 feet D. 2 feet

C. 4 feet pg. 668

Where Type SRD multiconductor cable consist of size 8 AWG conductors and only 2 conductors in the cable are current-carrying, what is the ampacity of the conductors? A. 20 amperes B. 30 amperes C. 40 amperes D. 50 amperes

C. 40 amperes pg. 251

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 additional overcurrent protection? A. 10 feet B. 25 feet C. 50 feet D. 75 feet

C. 50 feet pg. 224

The branch circuit conductors supplying a 240 volt, single phase, 15 kW rated fixed electric space heater provided with a 10 ampere blower motor are required to have an ampacity of at LEAST ____. A. 63 amperes B. 78 amperes C. 91 amperes D. 109 amperes

C. 91 amperes pg. 291

One- and two-family dwelling unit services are required to be provided with: I. an emergency service disconnect II. a surge-protective device A. I only B. II only C. Both I and II D. Neither I nor II

C. Both I and II pg. 93, 95

AFCI protection is required for all 15- and 20-ampere, 120 volt branch circuits supplying outlets located in ____. A. boat houses B. recreational vehicles C. all guest rooms and guest suites of hotels D. residential garages

C. all guest rooms and guest suites of hotels pg. 64, 65

Enclosures containing circuit breakers, switches and motor controllers located in Class II, Division 2 locations, shall be ____ or otherwise identified for the location. A. gaslight B. vapor-proof C. dusttight D. stainless steel

C. dusttight pg. 380

When sizing overcurrent protection for fire pump motors, the device(s) shall be selected or set to carry indefinitely the ____ of the motor. A. starting current B. full-load running current C. locked-rotor current D. dull-load amperage as indicated on the nameplate

C. locked-rotor current pg. 601

When combination surface nonmetallic raceways are used for both signaling and for power and lighting circuits, the different systems shall be ____. A. prohibited B. run in the same compartment C. run in separate identified compartments D. maintain a spacing of at least 1/2 in.

C. run in separate identified compartments pg. 236

Motor fuel dispensing systems shall be provided with one or more identified emergency shutoff devices or electrical disconnects. Such devices or disconnects shall NOT be more than ____ from the motor fuel dispensing units that they serve. A. 30 ft. B. 50 ft. C. 75 ft. D. 100 ft.

D. 100 ft. pg. 419

Manhole covers shall be OVER ____ or otherwise designed to require the use of tools to open. A. 25 lbs. B. 50 lbs. C. 75 lbs. D. 100 lbs

D. 100 lbs pg. 57

Ceiling suspended luminaires (lighting fixtures) or paddle fans located ____ or more above the max. water level of an indoor installed spa or hot tub shall NOT require GFCI protection. A. 10 ft. B. 7.5 ft. C. 8 ft. D. 12 ft.

D. 12 ft. pg. 575

The branch circuit conductors supplying one or more units of information technology equipment shall have an ampacity of NOT less than ____ of the connected load. A. 80% B. 100% C. 115% D. 125%

D. 125% pg. 547

The circuit supplying an autotransformer-type dimmer installed in theaters and similar places shall NOT exceed ____ between conductors. A. 480 volts B. 277 volts C. 250 volts D. 150 volts

D. 150 volts pg. 455

When calculating the total load for a mobile home park before demand factors are taken into consideration, each individual mobile home lot shall be calculated at a MIN. of ____. A. 20,000 VA B. 15,000 VA C. 24,000 VA D. 16,000 VA

D. 16,000 VA pg. 479

a feeder at a school welding shop is to supply the following listed transformer are welders all with a 50% duty cycle. * two with 60 amperes rated primary current * two with 50 amperes rated primary current * two with 40 amperes rated primary current The feeder is required to have an ampacity of at LEAST ____. A. 213 amperes B. 196 amperes C. 182 amperes D. 176 amperes

D. 176 amperes pg. 540

Lampholders shall be constructed, installed, or equipped with shades or guards so that combustible material is not subjected to temperature in EXCESS of ____. A. 130 deg. F B. 140 deg. F C. 162 deg. F D. 194 deg. F

D. 194 deg. F pg. 282

Nonmetallic surface extensions shall be permitted to be run in any direction from an existing outlet, but NOT within ____ of the floor level. A. 1 ft. B. 1.5 ft. C. 2 ft. D. 2 in.

D. 2 in. pg. 232

Conductors supplying a continuous rated, varying-duty motor shall have an ampacity of NOT less than ____ of the motor nameplate current rating. A. 125% B. 140% C. 150% D. 200%

D. 200% pg. 313, 314

What is the MAX. standard size circuit breaker that may be used for overcurrent protection of size 4/0 AWG THWN copper conductors that are not serving a motor load? A. 200 amperes B. 225 amperes C. 230 amperes D. 250 amperes

D. 250 amperes pg. 161, 98, 100

In regard to a 7.5 hp, 480-volt, 3 phase ac motor with an 80% power factor and a full-load ampere rating of 19 amperes indicated on the nameplate, and a service factor of 1.15; when the initial setting of the overload device you have selected is not sufficient to carry the load, what is the MAX. setting permitted for the overload protection? A. 21.85 amperes B. 23.75 amperes C. 24.7 amperes D. 26.6 amperes

D. 26.6 amperes pg. 309, 316

The ampacity rating requirements for a disconnecting means of x-ray equipment shall be based on at LEAST ____ of the input required for the momentary rating of the equipment, if greater than the long-term rating. A. 125% B. 115% C. 80% D. 50%

D. 50% pg. 450

Given: after all demand factors have been taken into consideration for an office building, the demand load is determined to be 90,000 VA; the building has a 120/240-volt, single phase electrical system. What MIN. size copper conductors with THHN/THWN insulation are required for the ungrounded service-lateral conductors? Consider all termination lugs are rated for 75 deg. C. A. 400 kcmil B. 350 kcmil C. 300 kcmil D. 500 kcmil

D. 500 kcmil pg. 142, 153, 161

All swimming pool electric water heaters shall have the heating elements subdivided into loads not exceeding 48 amperes and protected at NOT over ____. A. 45 amperes B. 50 amperes C. 55 amperes D. 60 amperes

D. 60 amperes pg. 566

Where an apartment complex has a calculated connected lighting load of 205.4 kVA, what is the DEMAND load, in kVA, on ungrounded service-entrance conductors where applying the standard (general) method of calculation? Given: each dwelling unit in the complex has cooking facilities provided. A. 58.9 kVA B. 60.2 kVA C. 16.5 kVA D. 65.3 kVA

D. 65.3 kVA pg. 76

Cables operating at over 1000 volts and those operating at 1000 volts or less, are permitted to be installed in a common cable tray without a fixed barrier, where the cables operating at over 1000 volts are ____. A. Type MI B. Type AC C. Type CT D. Type MC

D. Type MC pg. 239

Which of the following listed is considered a Class III, Division 2 location? A. a grain storage silo B. a petroleum tank farm C. the area of a textile mill where cotton is processed D. a warehouse where cotton bales are stored

D. a warehouse where cotton bales are stored pg. 363

A single grounding electrode consisting of a ground rod, pipe, or plate that does not have a resistance to ground of 25 ohms or less, shall be supplemented by one additional electrode. Which of the following listed is/are approved for this purpose? A. a concrete encased electrode B. a ground ring C. the metal frame of the building D. all of these

D. all of these pg. 120, 121

Where a 125-volt, single phase, 20 ampere rated receptacle outlet is installed in a residential laundry room and designated for the clothes washing machine, the receptacle outlet must be provided with ____. A. AFCI protection only B. GFCI protection only C. both LCDI and GFCI protection D. both AFCI and GFCI protection

D. both AFCI and GFCI protection pg. 62, 64

In general, all mechanical elements used to terminate a grounding electrode conductor or bonding jumper to a grounding electrode shall be accessible. Which of the following, if any, is/are exception(s) to this rule? I. a connection to a concrete encased electrode II. a compression connection to fire-proofed structural metal A. I only B. II only C. neither I nor II D. both I and II

D. both I and II pg. 124

Aluminum or steel cable trays shall be permitted to be used as equipment grounding conductors, provided ____. I. the cable tray sections and fittings are identified as an equipment grounding conductor. II. the cable tray sections and fittings are durably marked to show the cross-sectional area of the metal. A. I only B. II only C. neither I nor II D. both I and II

D. both I and II pg. 242

Where a central vacuum assembly is located in a storage closet adjacent to the laundry room of a dwelling, accessible non-current-carrying metal parts of the assembly likely to be energized shall be ____. A. isolated B. insulated C. GFCI protected D. connected to an equipment grounding conductor

D. connected to an equipment grounding conductor pg. 288

When water reaches the height of the established electrical datum plane for an irrigation pond, the adjacent service equipment located on land 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

The NEC permits a building to have more than one service when: I. the load requirements f the building are at least in excess of 800 amperes II. the building is separated by firewalls with a four hour rating A. I only B. II only C. either 1 or II D. neither I nor II

D. neither I nor II pg. 88

Where a receptacle outlet is removed from and underfloor raceway, the conductors supplying the outlet shall be ____. A. capped with an approved insulating material B. taped off with red colored tape C. marked and identified D. removed from the raceway

D. removed from the raceway pg. 237