Residential Wireman Electrical Exam - Larry Bobo

How many grounded conductors may terminate in the same lug in a panelboard if the grounded conductors are not part of a parallel circuit? Conductors, Panelboards, connected in 408.41

1

Cables with entirely nonmetallic sheaths are permitted to enter the top of a surface-mounted enclosure through one or more nonflexible raceways not less than 450 mm (18 in.) and not more than __ feet in length Cabinets, Cutout Boxes, and Meter Socket Enclosures. 312.5(C)

10

What is the minumum size equipment ground for a 5-hp, 3 phase, 208-volt motor with 20 ampere overload protection and short circuit protection of 30 amperes is __ AWG copper. Grounding conductors, sizes 250.122(D)

10

Surge protective devices may be installed on circuits of up to __ volts. Surge protective devices, uses not permitted 285.3(1)

1000

The minimum height required for luminaires without GFCI protection above an indoor spa or hut tub shall be __ feet. Luminaires, Swimming pools, spas, and similar installations 680.43(B)(1)(a)

12

The minimum size copper equipment grounding conductor required for a 15-ampere branch circuit installed in rigid metal conduit that supplies a swimming pool pump motor is __ AWG. Swimming pools, fountains, and similar installations, 680.21(A)(1)

12

A branch circuit suppling a fixed storage-type water heater that has a capacity of 120 gallons or less shall have a rating of NOT less than __ percent of the nameplate rating. Water heaters 422.13, 422.10(A)

125

Branch circuit conductors that supply a single motor used in a continous duty applications shall have an ampacity of NOT less than ___ percent of the motors full load current rating. Motors, Continuous duty, 430.22

125

The maximum allowable overcurrent protection for four 14/2 NM cables installed in contact with thermal insulation without maintaining spacing between cables is: Nonmetallic-sheathed cable, Insulation, Ampacity, 334.112, 334.80

15

The minimum size branch circuit rating when supplying more than one cord and plug connected load is __ amperes. Loads, permissible 210.24, Table 210

15

When a motor is connected to a general purpose branch circuit by means of an attachment plug and receptacle and individual overload protection is omitted, the rating of the attachment plug and receptacle shall NOT exceed __ amperes at 125 volts or 250 volts. Motors, Branch circuits 430.42(C)

15

The minimum depth of a box that is intended to enclose a flush device supplied by 14 AWG or smaller conductors shall be __ inches. Boxes, Depth, minimum, 314.24(B)(5)

15/16

A listed instantaneous water heater shall be permitted to be subdivided into circuits protected at not more than __ amperes. Overcurrent protection, appliances 422.11(F)(3)

150

Conductors shall be considered outside of a building where installed in conduit and under not less than __ inches of earth beneath the building Outside of building, services considered 230.6(4)

18

A ground ring encircling the building or structure, in direct contact with the earth, shall consist of at least 20 feet of bare copper conductor NOT smaller than __ AWG. Ground ring 250.52(A)(4)

2

The maximum distance a 125 volt, 15- or 20 ampere service receptacle may be installed from an outside hot tub at a dwelling is __ feet. Swimming pools, fountains, and similar installations, receptacles 680.42, 680.22(A)(1)

20

The maximum height that kitchen counter-top receptacles may be installed above the counter top shall be __ inches. Countertops, outlets, 210.52(C)(5)

20

The minimum overhead clearance above the water level of a swimming pool for network-powered broadband communication equipment systems conductors shall be __ feet. 680.9(C)

22.5

A 30 ampere residential branch circuit may supply single cord and plug connected equipment rated at amperes or less Branch circuits, Appliances 210.23(B)

24

Where it is impracticable to locate the service head above the point of attachment, the service head location shall be permitted not farther than ___ inches from the point of attachment. Service drops, Connections, service head 230.54 (C) Exception

24

Motor feeder tap conductors shall terminate in a branch circuit protective device, be protected from damage, have an ampacity of at least one-third that of the feeder conductors, and be not more than ___ feet in length. Motors, Taps 240.21(F), 430.28(2)

25

The minumum size equipment bonding jumper required for bonding a metal CT enclosure for a service lateral of 5 parallel runs of 350 kcmil THWN copper is __ kcmil copper. Grounding conductor, Installation Table 250.102(C)(1)

250

what section of the NEC covers ampacities of equipment grounding conductors

250.122

The maximum length of a flexible cord that may be used for a re-circulating motor on a swimming pool at a dwelling is __ feet. Cords, Swimming pools, fountains, and other similar installations 680.21(A)(3)

3

__ inch trade size conduit has a metric designator of 21. General requirements for wiring methods, Raceways and fttings, metric designator and trade size 300.1(c) Table 300.1(C)

3/4

A plate-type grounding electrode shall be installed below the surface of the earth not less than __ inches. Plate electrodes 250.53

30

A rod or pipe electrode shall be permitted to be installed Horizontally buried in a trench that is at least __ inches deep, only where rock bottom is encountered Electrodes, grounding, System installation, 250.53(G)

30

Readily accessible photovoltaic source and output circuits shall be installed in a raceway when operating at maximum system voltages greater than __ volts Output circuits, Solar photovoltaic systems, OR Solar photovoltaic systems 690.31(A)

30

The minimum rating of a disconnecting means for an outside feeder supplying a building with only 2 branch circuits shall be __ amperes. Outside branch circuits and feeders, Disconnect, rating of 225.39(B)

30

When driving a ground rod at a 45 degree angle and rock bottom is encountered, ground rods may be buried in a trench ___ inches deep. Electrodes, grounding, System installation, 250.53(G)

30

A detached garage fed from a dwelling with a 3 wire feeder of 250 kcmil aluminum USE and a 200 ampere breaker requires a minimum size copper grounding electrode conductor to a concrete electrode of __ AWG. Grounding electrode conductor, sizing 250.32(a)(E), Table 250.66, 250.66(B)

4

The minimum number of 20-ampere branch circuits required for a one-family dwelling. Branch Circuits, Bathrooms 210.11(C)

4

The minimum size equipment grounding conductor for a 100 ampere, 120/240 volt single phase underground dwelling feeder whose ungrounded conductors have been increased in size from 3 AWG copper to 1 AWG copper is __ AWG copper Ampacities, Grounding 250.122(B) Table 250.122 Table 8 Ch 9

4

Any wiring behind heating panels or heating panel sets located in interior walls shall be considered as an operating at an ambient temperature of __ degrees C Fixed electric space-heating equipment, 424.95(B)

40

The maximum allowable circuit breaker ampacity for use with 8 AWG copper NM-B cable suppling a range is __ amperes. Nonmetallic-sheathed cable, Ampacity 334.80, Table 310(B)(16)

40

A park trailer is a unit that is built on a single chassis mounted on wheels and has a gross trailer area, in the set up mode, of NOT more than __ feet. Park Trailers, 552.43 552.2 definition

400

When twenty 12 AWG copper THNN current carrying conductors are installed in one 25' run of 2" EMT, what percent is the ampacity rating of each conductor de-rated by? Ampacities, conductors, 90 degree column, 310.15(B)(3)(A)

50

A 125 volt general purpose receptacle for a residential outdoor swimming pool must be located not less than __ Feet from the inside wall of the pool. Receptacles, Swimming pools 680.22

6

In general, an equipment bonding jumper installed on the outside of a raceway may not exceed __ feet. Bonding, Outside raceway, 250.102(E)(2)

6

The maximum allowable ampacity of 18 AWG fixture wire is _ amperes. Tables, Ampacities, Fixture wire, Allowable Ampacity for Fixture Wires Table 402.5

6

When one or more cables enters an outlet box, each equipment grounding conductor shall have a __ inch length of free conductor. Conductors, Length in boxes 300.14

6

Where one or more lighting outlet(s) are installed for interior stairways there shall be a wall switch at each floor level, and landing level that includes an entry way, to control the lighting outlets where the stairway between floor levels has __ risers or more. Dwellings, lighting outlets required 210.70(A)(2)(C)

6

Where the supplemental electrode is a rod, pipe or plate, that portion of the bonding jumper that is the sole connection to the supplemental grounding electrode shall not be required to be larger than __AWG copper, or 4 AWG aluminum: AC systems, Grounding electrode conductor 250.66(A)

6

Balconies, decks, and porches that are accessible from the inside of the dwelling unit shall have at least one receptacle not more than __ ft. above the balcony, deck, or porch surface. Balconies, outdoor, receptacles for, 210.52(E)(3)

6 1/2

The minimum rating for a service disconnecting means for a building, other than a single family dwelling, consisting of three 2 wire circuits shall be__ amperes. Service equipment, Rating, 230.79(D)

60

An enclosure subjected to prolonged submersion requires an enclosure of what type? Enclosures, Outdoor use, for 110.28, Table 110.28

6P

The minimum size copper conductor allowed for connecting all parts of a swimming pool equipotential bonding grid shall be __ AWG solid copper. Swimming pools, fountains, and similar installations, bonding 680.26(B)

8

The point of attachment of the service drop conductorsto a building or other structure shall provide a minumum clearance of NOT less than __ feet. Overhead service conductors, Clearances, 230.26

8

Temporary holiday decorative lighting installations are permitted to be in use for _ days. Temporary installations, time constraints 590.3(B)

90

True/False: A written record of the performance test shall not be required for optional standby systems. Optional standby systems 230.95(C) 700.3(d) 701.3(D) 702

False

True/False: Agricultural building equipotential planes shall not be connected to the electrical grounding system. Definitions: Equipotential plane 547.2

False

True/False: Conductors of AC and DC circuits, rated at 600 volts, nominal, or less, shall NOT be permitted to occupy the same raceway. AC and DC conductors in same enclosure, 300.3(C)(1), 300.3(C)(1)

False

True/False: If an evaporative cooler is mounted on the roof of a dwelling, a service receptacle is required to be located within 20 feet. Air-conditioning and refrigerating equipment, Outlets 210.63 Ex

False

True/False: One of the means by which grounding conductors and bonding jumpers shall NOT be connected by is machine screw type fasteners. Connection of Grounding and Bonding Equipment 250.8

False

What kind of protection is required for an outdoor receptacle located under the soffit of a dwelling for holiday lighting? Ground-fault circuit interrupters, Outdoors, dwelling units, 210.8(A)(3)

GFCI

In what areas of a dwelling shall 125-volt, single phase, 15 and 20 ampere outlets not be required to be protected by an arc-fault circuit interupter? Dwellings, Arc-fault circuit-interrupter protection, 210.12(A) 210.12(A)

Hallways

When a white insulated conductor in a cable is used for a 3-way switch loop, the conductor shall be ___ re-identified. Color code, Grounded conductor 200.7(C)(1)

Permanently

Each multi-wire branch circuit shall be provided with a means that will ____ disconnect all ungrounded conductors at the point where the branch circuit originates. Disconnecting means, Branch circuits, multiwire 210.4(B)

Simultaneously

True/ False: Unless listed for the control of other loads, general use dimmer switches, shall only be used to control permanently installed incandescent luminaires. Dimmers, Switch 404.14(E)

True

True/False: A site-isolating device installed at the distribution point where two or more agricultural buildings are supplied shall NOT be required to contain overcurrent protection Site-isolating devices, 547.9(A)

True

True/False: Flexible cords shall be permitted to be used as a bus drop cable attached to the building by an approved means Cords, Flexible, Uses not permitted 400.10, 400.12

True

True/False: Ground and pole mounted DC photovoltaic arrays shall have auxiliary electrodes connected directly to the array frames(s) or structure. Grounding electrode conductors, Solar photovoltaic systems 690.47(B)

True

True/False: In agricultural buildings, Areas having an equipotential plane, Outdoor areas, Damp or wet locations, and Dirt confinement areas for livestock ALL require GFCI protection for 125-volt, single-phase, 15 and 20 ampere general purpose receptacles. Agricultural buildings, wiring methods 547.5(G)

True

True/False: Metal enclosures for grounding electrode conductors shall be electrically continuous. Enclosure, grounding, Grounding electrode conductors, 250.64(E)

True

True/False: Non-metallic sheathed cable may be used where not installed in raceways in buildings of type III, IV, and V construction Nonmetallic-sheathed cable, Uses permitted 334.10(2)(3)

True

True/False: The equipment grounding conductor of a direct burial feeder to an agricultural building housing live stock shall be an insulated or covered conductor: Equipment Grounding Conductors, Agricultural Buildings 547.5(F)

True

True/False: When a portable generator is used for a portable optional standby source and is not considered to be a separately derived system, the equipment grounding conductor shall be bonded to the system grounding electrode. Optional standby systems, grounding 702.11(B)

True

Receptacles located in a residential garage used only for parking or storage shall be wired for what type of location? Hazardous (classifed) locations, Garages, commercial 511.3(A)

Unclassified

When NM cable is installed through slots or holes in metal framing members, listed bushings or grommets installed __ cable installation shall be used for protection Nonmetallic-sheathed cable, Through or parallel to framing members 300.4(B)1 334.17,

before

A transient voltage surge surpressor (TVSS), if installed in a metal enclosure, shall be bonded to ___ of the enclosure? Grounding, Surge protective devices 285.28, 250.64(E)

both ends

For an 20 ampere, 125 volt receptacle installed outside in a wet location, an outlet box hood box hood is required, shall be identified as "___ duty" and shall be weatherproof whether or not the attachment plug is inserted. Damp or wet locations, receptacles 406.9(B)(1)

extra

Thermal protection shall be required for a ballast of a florescent luminaire installed ____. Ballasts, electric discharge lamps, Protection in fluorescent fixtures, 410.130(E)

indoors

Where ungrounded conductors are increased in size, equipment grounding conductors shall be increased in size ___. Grounding conductors, 250-III, Sizes, 250.122 250.122(B)

proportionately

When a raceway is run from the interior to the exterior of a building, the raceway shall be ___. General requirements for wiring methods, Raceways exposed to different temperatures 300.7(A)

sealed

Raceways entering the side of an outdoor loadcenter, above the level of uninsulated live parts, shall use listed ___ location fittings Cabinets, cutout boxes, and meter socket enclosures, Damp and wet locations 408.37, 312.2

wet

The continuity of the grounded conductor shall depend on a busbar or __ only. Continuity, Grounded conductors 200.12

wire.