Review for NATF Electrical exam

If the grounding electrode conductor or bonding jumper connected to a single or multiple rod, pipe, or plate electrode, or any combination thereof, as described in 250.52(A)(5) or (A)(7), does not extend to other typesof electrodes that require a larger size conductor, the Grounding Electrode Conductor shall not be required to be larger ___________ AWG copper
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If the grounding electrode conductor or bonding jumper connected to a single or multiple rod, pipe, or plate electrode, or any combination thereof, as described in 250.52(A)(5) or (A)(7), does not extend to other typesof electrodes that require a larger size conductor, the Grounding Electrode Conductor shall not be required to be larger ___________ AWG copper
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8
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6 Code:250.66(A)
Electrical hazards often occur because the initial ______ did not provide for increases in the use of electricity and therefore wiring systems become overloaded.
Inspection
Owner
Wiring
Builder
Wiring 90.1(B) informational note
Where branch-circuit wiring on the supply side of enclosures and junction boxes connected to conduits run to underwater luminaires are installed in corrosive environments as described in 680.14, the wiring method of that portion of the branch circuit shall be ___________.
RMC or IMC
LFNC and PVC
any wiring method
RMC/IMC or LFNC and PVC conduit
RMC/IMC or LFNC and PVC conduit
Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other surfaces, shall not be damaged or contaminated by foreign materials such as ___________, or corrosive residues.
paint and plaster
cleaners
abrasives
any of these
any of these 110.12(B)
The word "Earth" best describes what NEC term?
Bonded
Grounded
Effective ground fault path
grounded 100
Exposed noncurrent-carrying metal parts of an information technology system shall be ________.
GFPE protected
inaccessible to non-qualified persons
GFCI protected
bonded to an equipment grounding conductor or double insulated
bonded to an equipment grounding conductor or double insulated 680.26(B)(6)(A)
Where a double-insulated water pool pump motor is installed where there is no connection between the swimming pool equipotential bonding means and the equipment grounding system for the premises, a solid 8 AWG copper bonding conductor shall be connected to _________.
a ground rod
the equipment grounding conductor of the motor circuit
8 AWG bonding grid
any of these
the equipment grounding conductor of the motor circuit 680.26(B)(6)(A)
If the building or structure served has no radio and television equipment intersystem bonding termination, the ________ conductor or grounding electrode conductor shall be connected to the nearest accessible location on the.
grounded
neutral
service equipment enclosure
bonding
bonding 810.21(F)(2)
Conductors installed in nonmetallic raceways run underground shall be permitted to be arranged as _______ installations. The raceways shall be installed in close proximity, and the conductors shall comply with 300.20(B)
neutral
grounded conductor
isolated phase
all of these
all of these 300 .3 (B)(1)
Alternating-current systems of 50V to 1,000V that supply premises wiring systems shall be grounded where supplied by a three-phase, 4-wire, delta-connected system in which the midpoint of one phase winding is used as a circuit conductor.
True
False
true 250.20(B)(3)
Where circuit conductors are installed in parallel in multiple raceways or cables and include an EGC of the wire type, the equipment grounding conductor shall be installed in parallel in each raceway or cable, sized in compliance with 250.122 based on the overcurrent protective device for the feeder or branch circuit.* 2 points true falsetrue 810.2(H)Bonding conductors used for the bonding connections of the non-current carrying metal parts of signs shall not be smaller than _______ AWG. 14 AWG 12 AWG 8 AWG 6 AWG14 600.7(B)(1)The grounding electrode conductor for an antenna mast or antenna discharge unit, if copper, shall not be smaller than 10 AWG. True Falsetrue 810.21(H)Receptacles incorporating an isolated grounding conductor connection intended for the reduction of electromagnetic interference shall be identified by ___________ on the face of the receptacle. an orange triangle a green triangle the color orange the engraved word "ISOLATED"an orange triangle 406.3(D)This Code covers the installation of ________ for public and private premises, including buildings, structures, mobile homes, recreational vehicles, and floating buildings optical fiber cables electrical equipment raceways all of theseall of these 90.2(A)(1)Conductors with the color _______ insulation shall not be used for underground or grounded conductors. green or green with one or more yellow stripes grey black with a white stripe whitegreen or green with one or more yellow stripes 250.119In completed installations, each outlet box shall have a __________. cover faceplate canopy any of theseany of these 314.25The building or structure grounding electrode system shall be used as the _________ electrode for the separately derived systems. grounding bonding grounded bondedgrounding 250.30(A)(4)Electrical continuity at service equipment, service raceways, and service conductor enclosures shall be ensured by ________. bonding equipment to the grounded service conductor connections utilizing threaded couplings on enclosures, if made up wrench tight other listed bonding devices, such as bonding-type locknuts, bushings, or bushings with bonding jumpers. any of theseany of these 250.92(B)(1) through (4)"Bonded" is defined as ______ to establish electrically continuity and conductivity. isolated guarded connected separatedconnected 100 bondedService raceways threaded into metal service equipment such as bosses (hubs) are considered to be effectively _________ to the service metal enclosure. attached bonded grounded securedbonded 250.92(B)(2)An accessory, such as a locknut, intended primarily to perform a mechanical function rather than an electrical function best describes ___________a fitting 100 fitting__________ alternating-current systems operating at 480V shall have ground detectors installed in the system. Solidly grounded Ungroundedungrounded 250.21(b)(1)Grounding electrode conductors shall be installed in one continuous length without a splice or joint, unless spliced by ________. connecting together sections of a busbar irreversible compression-type connectors listed as grounding and bonding equipment the exothermic welding process any of theseany of these 250.64(C)(1) and (2)Where an equipment grounding conductor is installed underground within an agricultural building, it shall be ________. insulated copper bare coveredinsulated 547.5(F)Equipment not __________ for outdoor use or identified for indoor use such as "dry locations" or "indoor use only", shall be protected against damage from the weather during construction. listed identified suitable markedidentified 110.11Where a shore power feeder supplies a remote panelboard, an insulated ____________ conductor shall extend from a grounding terminal in the service equipment to a grounding terminal in the remote panelboard. bonding jumper equipment grounding conductor grounding electrode conductorequipment grounding conductor 555.37(E)For grounded systems, normally noncurrent-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the ___________ to establish an effective ground-fault current path. ground earth electrical supply source enclosureOutside of patient care vicinities, care should be taken in specifying a system containing isolated ground receptacles, because the ________ of the effective ground-fault current path is dependent upon the equipment grounding conductor(s) and does not benefit from any conduit or building structure in parallel with the equipment grounding conductor. ampacity resistance effectiveness impedanceBonding jumpers for service raceways shall be used around impaired connections such as _______. oversized concentric knockouts oversized eccentric knockouts reducing washers any of theseany of theseAlternating-current circuits of less than 50V shall be grounded if supplied by a transformer whose supply system exceeds 150 volts-to-ground. True False_________ shall not be used as grounding electrodes. Metal underground gas piping systems Aluminum Metal well casings Metal underground gas piping systems and AluminumMetal underground gas piping systems and AluminumFor underground systems, noncurrent-carrying conductive materials enclosing electrical conductors or equipment shall be connected to the ________ in a manner that will limit the voltage imposed by lightning or unintentional contact with high-voltage lines. ground earth electrical supply source enclosureearthThe conductor used to ground the outer cover of communications cables such as CATV coaxial cable shall be permitted to be insulated or bare and shall be no smaller than ______. 14 AWG 12 AWG 10 AWG 6 AWGExpansion, expansion-deflection, or deflection fittings and telescoping sections of metal raceways shall be made ________ continuous by equipment bonding jumpers or other means. physically mechanically electrically directlyelectricallyThe grounding conductor connection to the grounding electrode shall be made by ________. listed lugs exothermic welding listed pressure connectors any of theseany of theseA single receptacle is a single contact device with no other contact device on the same _________. circuit yoke run equipmentAll conductors of the same circuit, including the grounded and equipment grounding conductors and bonding conductors, shall be contained within the same _________, unless otherwise permitted elsewhere in the Code. raceway cable trench all of theseall of theseIn one- and two-family dwellings where it is not practicable to achieve an overall maximum primary protector grounding electrode conductor length of 20 ft, a separate communications ground rod not less than _______ ft shall be driven and it shall be connected to the power grounding electrode system with a 6 AWG conductor. 5 8 10 20Connections, taps, or extensions made from paralleled conductors shall connect to all conductors of the paralleled set. True FalsetrueThe normally noncurrent-carrying metal parts of service equipment, such as service ______, shall be bonded together. raceways or service cable armor equipment enclosures containing service conductors, including meter fittings, boxes, or the like, interposed in the service raceway or armor cable trays all of theseall of theseGrounding electrode conductors of the wire type shall be _______. solid stranded insulated or bare any of theseany of theseIf the building or structure served has an intersystem bonding termination, the bonding conductor for an antenna mast shall be connected to the intersystem bonding termination. True FalsetrueIn health care facilities, isolated ground receptacles shall be installed in a patient care vicinity. True FalsefalseOutside of patient care vicinities, the equipment grounding terminals of isolated ground receptacles installed in branch circuits for patient care, shall be clearly _________ along the equipment conductor's entire length by green insulation with one or more yellow stripes. listed labeled identified approvedidentifiedBonding conductors and grounding electrode conductors for television and radio communications systems shall be _______ where exposed to physical damage. electrically continuous arc-fault labeled protected mechanically continuousMetal enclosures and raceways containing service conductors shall be connected to the grounded system conductor if the electrical system is grounded. True FalsetrueA service is supplied by three metal raceways, each containing 600 kcmil ungrounded conductors. Determine the copper supply-side bonding jumper size for each service raceway. 1/0 AWG 3/0 AWG 250 kcmil 500 kcmilWhen FMC is used where flexibility is necessary to minimize the transmission of vibration from equipment or to provide flexibility for equipment that requires movement after installation, _______ shall be installed. an equipment grounding conductor an expansion fitting flexible nonmetallic connectors adjustable supportsAn equipment grounding conductorFor grounded systems, normally noncurrent-carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the ___________ to establish an effective ground-fault current path.Earth 250.4(A)(4)