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RESIDENTIAL WIREMAN ELECTRICAL EXAM – LARRY
BOBO | 2024 ACTUAL EXAM WITH ACTUAL 250
QUESTIONS AND DETAILED CORRECT VERIFIED
ANSWERS |PRE-ASSESSED A+ |100% GUARANTEED TO
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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 - ANSWER- 4 The continuity of the grounded conductor shall depend on a busbar or __ only. Continuity, Grounded conductors 200.12 - ANSWER-wire. 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) - ANSWER-Simultaneously
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) - ANSWER-6 1/ 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 - ANSWER- 24 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 - ANSWER-False 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) - ANSWER- 10 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 - ANSWER- 15
Ground ring 250.52(A)(4) - ANSWER- 2 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) - ANSWER- 12 The maximum allowable ampacity of 18 AWG fixture wire is _ amperes. Tables, Ampacities, Fixture wire, Allowable Ampacity for Fixture Wires Table 402.5 - ANSWER- 6 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) - ANSWER-22. 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) - ANSWER-15/ The maximum height that kitchen counter-top receptacles may be installed above the counter top shall be __ inches.
Countertops, outlets, 210.52(C)(5) - ANSWER- 20 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) - ANSWER-Permanently 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 - ANSWER-False 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 - ANSWER- 125 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 - ANSWER- 8 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.
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) - ANSWER-True 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) - ANSWER- 30 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) - ANSWER- 250 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) - ANSWER- 25 Thermal protection shall be required for a ballast of a florescent luminaire installed ____. Ballasts, electric discharge lamps, Protection in fluorescent fixtures, 410.130(E) - ANSWER-indoors
In general, an equipment bonding jumper installed on the outside of a raceway may not exceed __ feet. Bonding, Outside raceway, 250.102(E)(2) - ANSWER- 6 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) - ANSWER-sealed 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) - ANSWER- 12 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) - ANSWER-extra 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
Ampacities, conductors, 90 degree column, 310.15(B)(3)(A) - ANSWER- 50 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. 552.2 definition - ANSWER- 400 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) - ANSWER- 40 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) - ANSWER- 4 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) - ANSWER-True
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) - ANSWER- 10 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) - ANSWER-True A plate-type grounding electrode shall be installed below the surface of the earth not less than __ inches. Plate electrodes 250.53 - ANSWER- 30 True/False: Metal enclosures for grounding electrode conductors shall be electrically continuous. Enclosure, grounding, Grounding electrode conductors, 250.64(E) - ANSWER-True 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 - ANSWER- 1
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) - ANSWER- 30 The minimum size branch circuit rating when supplying more than one cord and plug connected load is __ amperes. Loads, permissible 210.24, Table 210 - ANSWER- 15 __ 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) - ANSWER-3/ 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) - ANSWER-Unclassified 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) - ANSWER-True 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) - ANSWER- 125 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) - ANSWER- 6 Temporary holiday decorative lighting installations are permitted to be in use for _ days. Temporary installations, time constraints 590.3(B) - ANSWER- 90 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) - ANSWER-both ends 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) - ANSWER-True
True/False: Agricultural building equipotential planes shall not be connected to the electrical grounding system. Definitions: Equipotential plane 547.2 - ANSWER-False 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) - ANSWER- 18 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 - ANSWER- 6 what section of the NEC covers ampacities of equipment grounding conductors - ANSWER-
