Open Book Questions (#1)

Single-conductor power to a MDC shall be permitted to be used only in sizes ______ AWG or larger. a. #2 b. #4 c. #6 d. #8

a. #2 AWG 646.9(D)

Luminaires installed in exposed or concealed locations under metal-corrugated sheet roof decking shall be installed and supported so there is not less than ______ measured from the lowest surface of the roof decking to the top of the luminaire. a. 1 1/2" b. 1" c. 3/4" d. 5/8"

a. 1 1/2" 410.10(F)

Connections to an aluminum or copper busbar not less than ______ ______ and of sufficient length to accommodate at least three terminations for communication systems in addition to other connections. a. 1/4" thick - 2" wide b. 1/2" thick - 2" wide c. 1/4" thick - 4" wide d. 1/2" thick - 4" wide

a. 1/4" thick - 2" wide 250.94(B)

Tapped conductors shall not be permitted for portable generators rated ______ or less where Field wiring connection terminals are not accessible. a. 15 kw b. 17.5 kw c. 22 kw d. 25 kw

a. 15 kw 445.13(B)

NM cables shall be concealed within walls, floors, or ceilings that provide a thermal barrier of material that has at least a ______ finish rating as identified in listings of fire-rated assemblies. a. 15-minute b. 1 hour c. 2 hour d. 3 hour

a. 15 minute 334.10(3)

Rooftop decks that are accessible from inside the RV shall have at least one receptacle installed within the perimeter of the rooftop deck. The receptacle shall not be located more than ______ above the balcony, deck, or porch surface. The receptacle shall comply with the requirements of 406.9(B) for wet locations. a. 48" b. 6' c. 8' d. 10'

a. 48" 551.41(B)(4)

The maximum length of the branch-circuit wiring from the overcurrent device to the first outlet shall not exceed _____ feet for a #14 AWG conductor for a listed supplement arc protection circuit breaker installed at the origin of the branch circuit in combination with a listed outlet type branch-circuit type AFCI installed at the first outlet box on the branch circuit with all conditions met. a. 50 b. 75 c. 85 d. 100

a. 50 feet 210.12(A)(3)(b)

All appliances operating at ______ volts or more shall be listed. a. 50 b. 75 c. 120 d. 240

a. 50 volts 422.6

GFCI protection is required where receptacles are installed within ______ of the outside edge of the bathtub or shower stall. a. 6' b. 8' c. 10' d. 12'

a. 6 feet 210.8(A)(9)

Fixed industrial process heating equipment requiring supply conductors with over _______ insulation shall be Cleary and permanently marked. a. 60˚ b. 70˚ c. 76˚ d. 90˚

a. 60˚ 425.11

Where the distance above the roof to the bottom of the raceway is less than ______ , a temperature adder of 60˚F shall be added to the outdoor temperature to determine the applicable ambient temperature. a. 7/8" b. 1" c. 1 1/4" d. 2"

a. 7/8" 310.15(B)(3)(c)

Isolating devices shall be permitted to be more than ______ from the equipment where written safety procedures and conditions of maintenance and supervision ensure that only qualified persons service the Large-scale PV equipment. a. 72" b. 8' c. 10' d. 12'

a. 72" 691.9

The power monitoring equipment total area of all conductors, splices, taps, and equipment at any cross section of the wiring space does not exceed ______ of the csa of that space. a. 75% b. 60% c. 40% d. 20%

a. 75% of the csa 312.8(B)(2)

_______ shall be constructed and installed so that electrical and mechanical continuity of the complete system are assured. a. Wireways b. Surface metal raceways c. Auxiliary gutters d. Multioutlet assemblies

a. Wireways 376.100(A)

All nonblocking type 125v, 15 and 20 amp receptacles that are controlled by an automatic control device shall be marked with the symbol shown below a. circle w/line through on top b. big hexagon c. square d. small hexagon

a. circle w/line through on top See photo Pg. (89) 406.3(E)

HVAC multimotor and combination-load equipment where installed outdoors on a roof, an equipment grounding conductor of the wire type shall be installed in outdoor portions of metallic raceway systems that use a. non-threaded fittings b. threaded fittings c. insulated fittings d. bushings

a. non-threaded 440.9

Where a listed metal or nonmetallic conduit or tubing or Type MC cable is encased in not less than _______ inches of concrete for the portion of the branch circuit between the branch-circuit overcorrect device and the first outlet, it shall be permitted to install a listed outlet branch-circuit type AFCI at the first outlet to provide protection for the remaining portion of the branch circuit. a. 1 1/2 b. 2 c. 3 d. 4

b. 2" 210.12(A)(6)

Low voltage heating power unit shall be an isolating type with a rated output not exceeding ______ volts peak ac. a. 30 b. 42.4 c. 60 d. 25

b. 42.4 volts peak ac 424.101(A)

Type MV cable terminated in equipment or installed in pull boxes or vaults shall be secured and supported by metallic or nonmetallic supports suitable to withstand the weight by cable ties listed and identified for securement and support, or other approved means, at intervals not exceeding 5' from terminations at a maximum of ______ between supports. a. 5' b. 6' c. 8' d. 10'

b. 6' between 328.30

An energy-reducing active arc flash mitigation system helps in reducing ______ duration in the electrical distribution center. a. flash b. arcing c. short-circuit d. amperage

b. arcing 240.87(B) I.N.3

Threads cut into conduit anywhere other than the factory are called _______ threads. a. hand-cut b. field-cut c. course d. tampered

b. field-cut 300.6(A) I.N.

Tire inflation machines and automotive vacuum machines provide for ______ use shall be protected by a GFCI. a. commercial b. personnel c. compact vehicle d. bicycle

b. personnel 422.5(A)

A seal between electrical systems and flammable or combustible process fluids where a failure could allow the migration of process fluids into the premises' wiring system is the definition of a. plenum seal b. process seal c. interdict seal d. apparatus seal

b. process seal DEF 100

All luminaires, lamp holders, and _____ shall be listed. a. fixture wires b. retrofit kits c. lamps d. ballasts

b. retrofit kits 410.6

Approved drainage openings not larger than ______ inch shall be permitted to be installed in the field in boxes or conduit bodies rated for use in damp or wet locations. a. 0.125 b. 1/8" c. 0.250 d. 3/16"

c. 0.250 inch 314.15

Nameplates for all stationary generators and portable generators rated more than ______ watts shall also give the power rating, the sub transient and transient reactances, the insulation system class, etc. a. 5kW b. 7.5 kW c. 15,000 d. all of these

c. 15,000 watts 445.11

EMT shall be permitted to be installed in cinder concrete or cinder fill where subject to permanent moisture when protected on all sides by a layer of non cinder concrete at least 2" thick or when the tubing is installed at least ______ under the fill. a. 6" b. 12" c. 18" d. 24"

c. 18" under fill 358.10(C)

Type MC cable shall be permitted to be unsupported where the cable is of the interlocked armor type in lengths not exceeding ________ from the last point where it is securely fastened and is necessary to minimize the transmission of vibration from equipment or to provide flexibility for equipment that requires movement after installation. a. 24" b. 30" c. 36" d. 48"

c. 36" 330.30(D)(3)

Illumination shall be provided for working spaces containing battery systems. The lighting outlets shall not be controlled by ______ means only. a. timers b. photo cell c. automatic d. low voltage

c. automatic 480.10(G)

Where subject to exposure to ______ vapors, splashing, or immersion, materials or coatings shall either be inherently resistant to chemicals based on their listing or be identified for the specific chemical reagent. a. gasoline b. oil c. chemical solvents d. corrosive environments

c. chemical solvents 300.6(C)(2)

Where _______ or tinsel cord is approved for and used with a specific listed appliance or luminaire, it shall be considered to be protected when applied within the appliance or luminaire listing requirements. a. fixture wire b. festoon wire c. flexible cord d. multiconductor cable

c. flexible cord 240.5(B)(1)

Arc-fault circuit-interrupter type and ground-fault circuit-interrupter type receptacles shall be installed in a/an ______ location. a. exposed b. accessible c. readily accessible d. concealed

c. readily accessible 406.4(D)

Exposed runs of MC cable shall closely follow the surface of the building finish or of a. the roof b. concrete wall c. running boards d. the floor

c. running boards 330.15

All cut ends of LFMC shall be ______ inside and outside to remove rough edges. a. filed b. sanded c. trimmed d. de-burred

c. trimmed 350.28

Where a feeder is supplied from a dc system operating at more than 60 volts, each ungrounded conductor of ______ AWG or larger shall be identified by polarity at all termination, connection, and splice joints by marking tape, tagging, or other approved means. a. #14 b. #10 c. #8 d. #4

d. #4 AWG 215.12(C)(2)

Each meeting room of not more than ______ sq.ft. in other than dwelling units shall have outlets for nonblocking-type, 125 volt, 15 or 20 ampere receptacles. a. 250 b. 500 c. 750 d. 1000

d. 1,000 sq.ft. 210.71(A)

GFCI protection shall be provided for lighting outlets not exceeding ______ volts installed in crawl spaces. a. 30 b. 50 c. 90 d. 120

d. 120v 210.8(E)

Any combustible wall or ceiling finish exposed between the edge of a luminaire canopy or pan and an outlet box having a surface area of ______ inch square or more shall be covered with noncombustible material. a. 80 b. 100 c. 125 d. 180

d. 180 square inch 410.23

In airports where maintenance and supervision conditions ensure that only qualified persons can access, install, or service the cable, airfield lighting cable used in series circuits that are rated up to ______ volts and are powered by constant current regulators shall be permitted to be installed in cable trays. a. 1000 b. 2500 c. 3000 d. 5000

d. 5,000 volts 392.10(E)

Use of the system employed by the Listing organization allows the ______ to identify a Listed product. a. qualified person b. electrician c. owner d. AHJ

d. AHJ DEF 100 "Listed"

Documentation of engineered design by a licensed professional engineer engaged primarily in the design of such systems for the spacing between conductors shall be available upon request of the AHJ and this is stated in Article a. 517 b. 501 c. 300 d. 399

d. Article 399 399.30(A)

Where a tightening torque is indicated as a numeric value on equipment or in installation instructions provided by the manufacturer, a ______ shall be used. a. torque screwdriver b. torque wrench c. torque extension d. calibrated torque tool

d. Calibrated torque tool / tightening tool 110-14(D)

Vending machines not utilizing a cord and plug connection shall be a. guarded b. fixed in place c. stationary d. GFCI protected circuit

d. GFCI protected circuit 422.5(A)(5)

The appliance GFCI shall be readily accessible, listed, and located in one or more of the following locations: I. An integral part of an attachment plug II. A device or outlet within the supply circuit III. Within the branch circuit overcurrent device a. I only b. II only c. I and III d. I, II and III

d. I, II, II 422.5(B)

At least one 120 volt, 20 ampere branch circuit shall be installed to supply receptacle outlets in ______ with electric power. I. readily accessible outdoor receptacles II. detached garages III. attached garages a. III only b. II only c. I and II d. I, II and III

d. I, II, III 210.11(C)(4) ex.

_______ RMC shall be permitted to be installed for direct burial and swimming pool applications. a. Stainless steel b. Galvanized steel c. Aluminum d. Red brass

d. Red brass 344.10(A)(2)

Where metal fences are located within 16' of the exposed electrical conductors or equipment, the fence shall be bonded to the grounding electrode system with wire-type bonding jumpers by a. any gate or other opening in the fence shall be bonded across the opening by a buried bonding jumper b. the barbed wire strands above the fence shall be bonded to the grounding electrode system c. where bare overhead conductors cross the fence, bonding jumpers shall be installed on each side of the crossing d. all of these

d. all of these 250.194(A)(2,4,6)

Examples of increased or additional hazards include, but are not limited to, a. motors associated with adjustable speed drives b. submersible motors c. motors rated in excess of 100 hp d. all of these

d. all of these 430.102(B) I.N.

In seating areas or similar surfaces, receptacles shall not be installed in a face-up position unless the receptacle is a. part of an assembly listed either as household furnishings or as commercial furnishings b. part of an assembly listed as a furniture power distribution unit, if cord and plugged connected c. installed in a listed floor box d. any of these

d. any of these 406.5(H)(1,2,3)

Article 640 does not cover a. electronic organs b. speech input systems c. electronic musical instruments d. fire and burglary alarm signaling devices

d. fire and burglary alarm signaling devices 640.1(A)(B)