129,
134.4 A 20-amp, 120-volt duplex convenience receptacle near a pool shall be located so that it is ___ feet or more from the inside edge of the pool. Select one: a. 6 b. 12 c. 10 d. 20 e. 6 1/2
a. 6
130.15 Figure 130.104 Refer to Figure 130.104. Circuit 13 is connected to the ___ busbar. Select one: a. AØ b. BØ
a. AØ
128.40 Figure 128.407 Refer to the circuit shown in Figure 128.407. The equivalent resistance of Lamps 1 and 2 (R1&2) is ___ ohms. Select one: a. 56.33 b. 2.31 c. 26.31 d. 48.0 e. 28.17
e. 28.17
128.56 Figure 128.525 Which of the diagrams shown in Figure 128.525 shows a 12-volt charger correctly connected to the batteries? Each battery is rated for 6 volts. Select one: a. I b. II c. III d. IV e. none of these
a. I
128.57 Figure 128.525 Which of the diagrams shown in Figure 128.525 shows a 24-volt charger correctly connected to the batteries? Each battery is rated for 12 volts. Select one: a. I b. II c. III d. IV e. none of these
a. I
129.35 The overall diameter (including insulation) of a 250 kcmil THHN/THWN copper conductor is ___ inches at the ?. The conductor shown below is close to its actual size.
a. .711
134.1 Tests have shown that a voltage gradient of ___ volts per foot can cause paralysis. Select one: a. 1.5 b. 5 c. 60 d. 120
a. 1.5
128.3 Refer to Figure 128.202. ___ volts are applied across the water heater element.
a. 240
128.49 Figure 128.231Schedule for a 120/240-V1-Phase, 3-Wire Panel The TV's nameplate shows 450 W at 120 volts. The nameplate on the freezer shows 7.5 A @ 120 volts. To serve these loads, you have two circuits with a shared neutral. Assume that both loads are operating. Refer to the panel schedule shown in Figure 128.231. If the neutral is removed from the neutral bar, ___ volts will be applied to the TV. Select one: a. 240 b. 160 c. 120 d. 80 e. 32
b. 160
134.45 Electrical equipment located 7 feet from the inside wall of a pool is required to be grounded. Select one: a. True b. False
b. False
131.2 The grounding electrode conductor shall be ___. Select one: a. copper b. copper, aluminum, or copper-clad aluminum c. copper or aluminum d. aluminum or copper-clad aluminum
b. copper, aluminum, or copper-clad aluminum
134.16 Over a 10-year period, more than 46,000 workplace injuries were due to ___. Select one: a. electrocution b. electrical shock c. both a and b d. neither a nor b
b. electrical shock
129.37 What minimum size Schedule 40 PVC conduit is required where the following conductors are to be installed? Two #2 THHN/THWN plus One #4 THHN/THWN Select one: a. 2 b. 1 1/4 c. 1 d. 1 1/2 e. none of these
c. 1
131.21 According to Article 250, a metal underground water pipe that is in direct contact with the earth for 10 ft. or more (including any metal well casing effectively bonded to the pipe) and electrically continuous (or made electrically continuous by bonding around insulating joints or insulating pipe) to the points of connection of the grounding electrode conductor and the bonding conductors would be a good ___. Select one: a. insulator b. service conductor c. grounding electrode d. neutral
c. grounding electrode
129.38 When the corrected ampacity of a 10 AWG copper conductor is 12.86 amps, the maximum size circuit breaker permitted to protect the conductors is ___. Select one: a. 25 b. 10 c. 30 d. 20 e. 15
e. 15
134.9 Pool recirculating equipment and pumps are required to be grounded. Select one: a. True b. False
a. True
129.42 A raceway with two, 3-wire branch circuits consists of four ungrounded conductors and two grounded conductors. All of the circuit conductors are current-carrying. The ampacity of these conductors must be based on ___ percent of the ampacity values as found in Table 310.16. Select one: a. 80 b. 70 c. 60
a. 80
131.38 If the manufacturer specifies that a terminal lug be torqued to 7.5 foot-lbs but your torque wrench is calibrated in inch-pounds, you would set your wrench at ___ in.-lb. Select one: a. 90 b. 1.6 c. 7.5 d. 37.5 e. none of these
a. 90
134.15 Statistical tracking over a 10-year period indicated that about ___% of workplace fatalities were due to electrocution. and over 46,000 workers were injured from electrical shock. Select one: a. 50 b. 25 c. 5 d. 20
c. 5
134.48 The NEC® requires that all electrical equipment, located in a fountain or within ___ feet of the inside wall of a fountain, be grounded. Select one: a. 12 b. 10 c. 5 d. 20 e. 15
c. 5
128.47 Figure 128.230 You have run two branch circuits (with a shared neutral) to a split-wired receptacle. Both loads are operating. Load 1 is plugged into the upper half of the duplex receptacle and load 2 is plugged into the lower half.Refer to the information shown with Figure 128.230. If the neutral is broken in a J-box somewhere between the panel and the loads, ___ amps will flow through load 2. Select one: a. 9.6 b. 38.4 c. 5.0 d. 12.5 e. 3.1
c. 5.0
129.46 A 120V clothes dryer located in a finished basement laundry room requires the following: Select one: a. Ground-fault circuit protection b. Arc-fault circuit protection c. Both d. Neither
c. Both
130.14 Figure 130.103 Refer to Figure 130.103. In amps, how much current will flow in the conductor connected to the 2-pole breaker at 4? Select one: a. 21.63 b. 18.75 c. 15 d. 23.44 e. 37.5
b. 18.75
134.43 Proper grounding and bonding of all the metal parts in and around a pool area ___.I. assures that all conductive surfaces are at the same ground potentialII. reduces the shock hazard to personsIII. ensures that OCPDs (circuit breakers and fuses) operate properly in the event of a fault Select one: a. I & II only b. II & III only c. I, II & III d. II only e. I & III only
c. I, II & III
128.26 Figure 128.203The equivalent resistance of Lamps 3, 4, 5 & 6 is ___ ohms. Refer to the circuit shown in Figure 128.203. Select one: a. 144 b. 48 c. 12 d. 96 e. 192
b. 48
134.3 Article ___ of the NEC® is the article that gives requirements for swimming pool installations. Select one: a. 560 b. 680 c. 750 d. 860
b. 680
128.14 In an office building, Circuit 22 supplies the upper half and Circuit 24 supplies the lower half of a duplex receptacle. These breakers are permitted to be ___. I. two individual single-pole circuit breakers II. two individual single-pole circuit breakers with handle ties III. a two-pole circuit breaker Select one: a. I or II only b. II or III only c. I or III only d. I, II, or III
b. II or III only
134.21 GFCI protection for personnel ___ protect a person against the sensation of feeling a shock. Select one: a. does b. does not
b. does not
131.36 If likely to become energized, interior metal natural gas piping ___ required to be bonded in accordance with NEC® Section 250.104(B). Select one: a. shall not be b. shall be
b. shall be
134.13 The goal of the Standard for Electrical Safety in the Workplace is to provide workers with safe rules and procedures to follow when working ___ energized electrical equipment. Select one: a. near b. around c. both a and b d. neither a nor b
c. both a and b
131.24 According to NEC® Section ___, when a single equipment grounding conductor is run with multiple circuits in the same raceway or cable, it shall be sized for the largest overcurrent device protecting conductors in the raceway or cable. Select one: a. 250.2 b. 250.66 c. 250.122 d. 250.52
c. 250.122
134.20 The maximum suggested immersion time in a hot tub with a water temperature of 104 degrees Fahrenheit is ___ minutes. Select one: a. 30 b. 45 c. 5 d. 15
d. 15
130.19 Figure 130.106 Refer to Figure 130.106. Panel A has ___ spare 15-amp circuit breakers. Select one: a. 0 b. 5 c. 1 d. 2 e. none of these
d. 2
130.28 Figure 130.105Refer to Figure 130.105. The Code reference used to determine the maximum mounting height of the switch is ___. Select one: a. 551.77(D) b. 550.32(F) c. 411.5(C) d. 404.8(A) e. 410.30(B)(1) Exc. 1
d. 404.8(A)
131.39 A terminal lug on a neutral bar is to be torqued to 110 in-lbs, but your torque wrench is calibrated in foot-pounds. You would set your wrench at ___ ft.-lb. Select one: a. 18.3 b. 110 c. 1,320 d. 9.2 e. none of these
d. 9.2
134.14 Electrical injuries and fatalities are the ___ cause of deaths and injuries in construction. Select one: a. number one b. second leading c. primary d. fourth leading
d. fourth leading
129.17 This piece of equipment contains 4 heating elements that are equally rated. Each has the same power and voltage rating. Refer to Figure 129.106. With the equipment energized and the current flowing through the element connected at T3 & T4 is 10 amps, the current flowing through the branch circuit conductors between the circuit breaker and the equipment ___. Select one: a. is 2.5 amps b. can't be determined c. is 10 amps d. is 5 amps e. is 20 amps
e. is 20 amps
129.25 What is the minimum trade size EMT required to contain four 8 AWG THHN/THWN copper conductors? Select one: a. 1 b. 1 1/4 c. 2 d. 1 1/2 e. none of these
e. none of these
128.42 Figure 128.407 The neutral has been removed from the neutral bar in the circuit shown in Figure 128.407. How many amps of current is flowing through the circuit conductor connected to the terminal on Breaker 10 (Ickt-10)? This is the current that would be indicated on the ammeter shown just above Lamps 1 & 2. Select one: a. 3.33 b. 2.84 c. 8.52 d. 6.39 e. 4.26
b. 2.84
129.51 A 30A 240V receptacle is located in a finished basement 7 feet from a utility sink. This requires the following: Select one: a. Ground-fault circuit protection b. Tamper-resistant c. Both d. Neither
a. Ground-fault circuit protection
130.31 The initial cost of metal halide luminaires is ___ than that of quartz luminaires. Select one: a. greater b. less
b. $1,584
130.10 The breaker panel should have a directory that identifies the ___ served by each individual circuit. Select one: a. various receptacles b. general area c. equipment d. a or b e. a or b or c
e. a or b or c
131.34 A(n) ___ AWG grounding electrode conductor is required to be installed in cable armor or conduit when it is NOT subject to physical damage such as where installed behind a flower bed. I. 8 II. 4 III. 3/0 Select one: a. I, II & III b. III only c. I only d. I & II only e. none of these
c. I only
129.11 Refer to Figure 128.301. The total heating element load will deliver ___ kW of power. Select one: a. 8.8 b. 6.092 c. 8.11 d. 7.627 e. 10.154
b. 6.092
128.55 Figure 128.524 Each battery shown in Figure 128.524 is fully charged at 12 volts. The voltage applied to the load is ___ volts. Select one: a. 24 b. 18 c. 0 d. 36 e. none of these
d. 36
134.41 Electrical equipment associated with a therapeutic tub ___ required to be GFCI protected. Select one: a. is not b. is
b. is
130.23 Figure 130.101 The conductors at Point III in Figure 130.101 are ___. The service point is located at the meter. Select one: a. service-entrance conductors b. service-lateral conductors c. service-drop conductors
b. service-lateral conductors
130.9 Maintain an aisle in front of an electrical panel that is at least ___ feet wide. Select one: a. zero b. three c. four d. six
b. three
130.5 Service conductors shall have a clearance of not less than ___ feet from windows, doors, or similar locations that open. Select one: a. 6 b. 5 c. 3 d. 2 e. 10
c. 3
130.26 The main service disconnect shall be located ___. Select one: a. within 3 ft (900 mm) of where the service conductors enter the building. b. within 6 ft (1.8 m) of where the service conductors enter the building. c. at the nearest point of entry of the service conductors.
c. at the nearest point of entry of the service conductors.
130.34 How much will it cost to install, operate, and maintain one luminaire with a 100-watt metal halide lamp for 12.5 hours per day for 10 years (365 days per year)? The initial cost of the new luminaire (including installation labor) is $245.00. Electricity costs $0.14 per kW-hr. The maintenance costs (including labor) to replace a ballast and three lamps during the 10-year period is $375.$________ for electricity used+ $________ for initial luminaire cost+ $________ for maintenance $________ TOTAL Select one: a. $638.75 b. $145 c. $375.00 d. $1258.75
d. $1258.75
128.48 Figure 128.210 Refer to Figure 128.210. If the neutral was removed from the neutral bar in the panelboard, the voltage applied to the toaster would be: Etoaster = ___ volts. Select one: a. 197 b. 120 c. 48 d. 240 e. 43
e. 43
134.47 The steel walls of a bolted or welded metal pool may be used as a common grid to bond metal parts of a pool and equipment in a pool. Select one: a. True b. False
a. True
134.49 Panelboards that are not part of the service equipment and that supply any electrical equipment associated with the fountain are required to be grounded. Select one: a. True b. False
a. True
134.8 All electrical equipment for storable pools is required to be GFCI protected. Select one: a. True b. False
a. True
134.25 Pools that have nonmetallic inflatable walls are considered to be ___ pools, regardless of their dimensions. Select one: a. storable b. fixed c. permanent d. portable
a. storable
130.32 A baseball field has 800 luminaires to light the playing field. Each luminaire contains a 1500-watt multivapor lamp. For an evening game, the field lights are turned ON at 2 p.m. and OFF at 1 a.m. the following morning. What is the energy cost to operate the field lighting for this game? Electricity costs $0.12 per kW-hr. Select one: a. $13,091 b. $1,584 c. $1,309 d. $15,840 e. $1,200
b. $1,584
129.1 What is the minimum number of receptacles required in an unfinished basement? Select one: a. 0 b. 1 c. 2 d. 4
b. 1
129.48 HVAC equipment is located in a finished mechanical room in a dwelling unit basement. How many receptacle outlets are required? Select one: a. 0 b. 1 c. 2 d. 4
b. 1
129.24 What is the minimum trade size EMT required to contain three 1/0 AWG THHN/THWN copper conductors? Select one: a. 1/2 b. 1 1/4 c. 3/4 d. 1 e. none of these
b. 1 1/4
128.23 Refer to Figure 128.202. The neutral conductor carries ___ amps. Select one: a. 2.31 b. 2.13 c. 1.07 d. 4.26 e. 2.5
b. 2.13
134.44 The Code requires that all electrical equipment within ___ feet of the inside wall of the specified body of water (a pool) be grounded. Select one: a. 10 b. 5 c. 2 d. 3
b. 5
128.1 When loads such as lamps, motors, and heaters are connected to one circuit of a multiwire branch circuit, these loads are connected in ___. Select one: a. series b. parallel
b. parallel
128.17 Refer to the circuit shown in Figure 128.407. Lamps 1 and 2 are connected in ___ with each other. Select one: a. series b. parallel
b. parallel
128.22 Refer to Figure 128.201. Lamps 1 and 2 are connected in ___ with each other. Select one: a. series b. parallel
b. parallel
128.51 Figure 128.521 Refer to Figure 128.521. Each battery puts out 6 volts. The voltage applied to the load is ___ volts. Select one: a. 36 b. 72 c. 12 d. 24 e. 0
c. 12
134.30 What is the minimum number of 125-volt, 15- or 20-ampere convenience receptacles that the NEC® requires to be installed near a permanently installed pool? The pool is located in your neighbor's backyard. Select one: a. none are required b. two (one at each end) c. one d. four (one on each side)
c. one
134.18 Only ___ may work on energized circuits, parts, or equipment. Select one: a. workers with the proper protective equipment b. specially trained workers c. qualified workers d. workers with special education
c. qualified workers
130.24 Figure 130.102 The conductors at Point I in Figure 130.102 are ___. Select one: a. service-entrance conductors b. service-lateral conductors c. service-drop conductors
c. service-drop conductors
130.6 10.05 cents equals $___. Select one: a. 10 .05 b. 1,005 c. 1 .005 d. .1005 e. 100 .50
d. .1005
131.29 Electrical equipment is bonded in order to ___. Select one: a. insure electrical continuity in the grounding system b. establish an effective ground-fault-current path to the power source c. permit the OCPD to open quickly in the event of a ground fault d. all of these e. none of these
d. all of these
130.30 An air conditioner pulls 23 amps at 240 volts. The electric utility rate is 9.1 cents per kW-hr. The air conditioner "runs" for 8.5 hours each day. The cost to operate the air conditioner for 30 days is ___. Select one: a. $222.38 b. $426.97 c. $533.72 d. $150.70 e. $128.09
e. $128.09
130.21 Figure 130.107 Refer to Figure 130.107. The fewest number of AFCI circuit breakers that are required to be installed in Panel B is ___. Select one: a. 4 b. 16 c. 5 d. 14 e. 6 f. 9
??
129.36 Eleven #12, five #10, and six #6 THHN/THWN conductors will be installed in a run of EMT. The smallest trade size EMT you can use is ___. Select one: a. 2 b. 1 c. 2 1/2 d. 1 1/2 e. 1 1/4
e. 1 1/4
128.36 Figure 129.106This piece of equipment contains 4 heating elements that are equally rated. Each has the same power and voltage rating. Refer to Figure 129.106. With the equipment energized and the power used by the element connected at T3 & T4 is 1.2 kW, the power used by the element connected between T5 & T6 ___. Select one: a. is 2.4 kW b. can't be determined c. is 0.6 kW d. is 4.8 kW e. is 1.2 kW
e. is 1.2 kW
134.40 For indoor installations, wall switches must be kept at least ___ feet, measured horizontally, from the inside edge of the spa or hot tub. Select one: a. 5 b. 10 c. 12 d. 20
a. 5
130.3 What term defines the conductors and equipment required to deliver energy from the electric supply source to the wiring system of the premises? Select one: a. Service b. Feeders c. Service lateral d. Power supply
a. Service
129.3 Raceways ___ required to be completely installed between boxes before pulling in the wires. Select one: a. are b. are not
a. are
128.54 The battery compartment in an offshore service boat contains ten 18-volt batteries to operate a small crane that requires 90 volts to operate. The ten batteries are connected in ___. Select one: a. combo series/parallel b. parallel c. series
a. combo series/parallel
128.16 Multiwire branch circuit LA-2,4 is installed using 14-3 AC cable to supply power to two receptacles. The 14-3 cable enters the first receptacle box then 14-2 cable exits this box and continues to the second receptacle box. The NEC® permits the two grounded conductors that enter and exit the first box to be ___.I. directly connected to the terminal screws on the receptacleII. connected together with a wire nut and a pigtail from there to the receptacle terminal screw Select one: a. I only b. II only c. either I or II d. neither I nor II
b. II only
128.13 A multiwire branch circuit from a 120/240-volt 1Ø, 3-wire panelboard will be used to supply power to a double single-pole switch. The NEC® requires that a multiwire branch circuit supplying more than one device or equipment on the same yoke have a means to simultaneously disconnect all ungrounded conductors at the panelboard where the branch circuit originated.Double Single-Pole Switch This means that ___ can be used to disconnect the circuits from the receptacle. Select one: a. two single-pole circuit breakers b. one two-pole circuit breaker c. either a or b d. neither a nor b
b. one two-pole circuit breaker
128.39 Figure 128.303 A furnace with four resistance-heating elements installed is shown above at the left. The schematic for this equipment is shown at the right. Each element is rated at 1,200 watts at 250 volts. Refer to Figure 128.303. You are to replace the four elements with new ones that have a fixed resistance of 40 ohms each. The total current drawn by the furnace ( all four heating elements together) when connected to the 480-volt circuit is ___ amps. Select one: a. 48 b. 6 c. 12 d. 24 e. 40
c. 12
128.52 Figure 128.521 The bank of batteries shown in Figure 128.521 is connected in ___. Select one: a. series b. parallel c. series/parallel
c. series/parallel
128.45 Figure 128.417 The neutral has been removed from the neutral bar in the circuit shown in Figure 128.417. The current through Lamp Y (Iy) with the neutral open is ___ amps. Select one: a. .75 b. 2.25 c. 1.5 d. 1 e. .5625
d. 1
128.53 Refer to Figure 128.523. Each battery puts out 12 volts. The voltage applied to the load is ___ volts. Select one: a. 36 b. 48 c. 12 d. 24 e. 0
d. 24
128.20 All three loads in the above illustration have equal ratings (same "wattage" and "voltage" ratings).Refer to Figure 128.215. If the current flowing in Line 1 is 8 amps and the current flowing in Line 2 is 4 amps, this would mean that ___ amps of current are flowing in the neutral. Select one: a. 16 b. 6 c. 12 d. 4
d. 4
129.22 Which of these trade size 1/2 inch raceways has the smallest inside diameter? Refer to the appropriate table among those shown in NEC® Chapter 9 - Table 4. Select one: a. Intermediate Metal Conduit b. Electrical Metallic Tubing c. Flexible Metal Conduit d. Electrical Nonmetallic Tubing e. Rigid Metal Conduit
d. Electrical Nonmetallic Tubing
128.12 Voltmeters are connected in ___ with the load when used to measure voltage across a load in a circuit. Select one: a. parallel b. series
a. parallel
128.41 Figure 128.407 The neutral has been removed from the neutral bar in the circuit shown in Figure 128.407. Lamp 3 is connected in ___ with Lamps 1 and 2. Select one: a. series b. parallel
a. series
128.4 Refer to Figure 128.203. The voltage across Lamp 1 is ___ volts. Select one: a. 240 b. 0 c. 30 d. 120 e. 60
d. 120
129.12 A furnace with four resistance-heating elements installed is shown above at the left. The schematic for this equipment is shown at the right. Each element is rated at 1,200 watts at 250 volts. What is the total power delivered by the furnace (all four heating elements together) when connected to the 480-volt circuit shown in Figure 128.303? Select one: a. 4,800 b. 2,400 c. 1,302 d. 2,604 e. 4,424
e. 4,424
131.32 If connected to a metal water piping system, the grounding electrode conductor shall be connected at some point within the first ___ of where it enters the building. Select one: a. 5 ft (1.52 m) b. 10 ft (3.0 m) c. 25 ft (7.5 m)
a. 5 ft (1.52 m)
134.5 Generally, safety switches and wall switches must be located at least ___ from the inside edge of a swimming pool. Select one: a. 5' b. 20' c. 3' d. 10' e. 8'
a. 5'
134.17 The Standard for Electrical Safety in the Workplace requires that all electrical equipment operating at over ___ volts to ground be de-energized and locked out before anyone is permitted to work on or near the equipment. Select one: a. 50 b. 150 c. 80 d. 250
a. 50
131.23 Where connected to a rod, pipe, or plate grounding electrode, the largest required size of the grounding electrode conductor is ___ AWG copper. Select one: a. 6 b. 8 c. 4 d. 10
a. 6
131.31 The main bonding jumper (a green bonding screw, for example) that is shipped with and installed in a 120/240-volt, single-phase circuit-breaker panel at the service connects (bonds) the ___ to the metal panel enclosure. I. branch-circuit neutrals II. branch-circuit "hots" Select one: a. I only b. II only c. both I & II d. neither I nor II
a. I only
131.33 Which of these grounding electrode conductors requires protection? The conductors are subject to physical damage. I. 8 AWG II. 6 AWG III. 4 AWG IV. 2 AWG Select one: a. I, II, III & IV b. I, II & III only c. I only d. I & II only
a. I, II, III & IV
130.20 Figure 130.106 Refer to Figure 130.106. Panel A is a ___. Select one: a. service panel b. sub panel
a. service panel
130.18 Figure 130.106 Refer to Figure 130.106 that shows Panel A. A ___ circuit breaker feeds the central air conditioner. Select one: a. 2-P, 30-A b. 2-P, 45-A c. 2-P, 20-A d. 2-P, 70-A e. 2-P, 100-A
b. 2-P, 45-A
131.27 Article ___ of the NEC® covers the requirements that establish a grounding electrode system. Select one: a. 210 Part V b. 250 Part III c. 260 Part III d. 280 Part IV
b. 250 Part III
130.12 Circuit breakers should be held open with tape when affected equipment is to be serviced. Select one: a. True b. False
b. False
134.35 An underwater pool light can be connected to a 277-volt circuit. Select one: a. True b. False
b. False
131.6 Self-tapping sheet metal screws (TEK screws) ___ permitted to be used to connect the equipment grounding conductor to a metal box. Select one: a. are b. are not
b. are not
134.42 "The provisions of this article apply to the construction and installation of electrical wiring for and equipment in or adjacent to all swimming, wading, therapeutic, and decorative pools; fountains; hot tubs; spas; and hydromassage bathtubs, whether permanently installed or storable, and to metallic auxiliary equipment, such as pumps, filters, and similar equipment. The term body of water used throughout Part I applies to all bodies of water covered in this scope unless otherwise amended" is a statement shown in Article ___ in the NEC®. Select one: a. 220 b. 440 c. 680 d. 720
c. 680
134.46 The Code requires that all metal parts of a pool installation be bonded to a common bonding grid by ___ AWG or larger solid copper wire. Select one: a. 10 b. 12 c. 8 d. 6
c. 8
131.37 When determining the minimum size of a grounding electrode conductor, Table ___ is used. Select one: a. 310.15(B)(16) b. 250.122 c. 314.16(A) d. 250.66 e. none of these
d. 250.66
130.27 When mounting switches, such as safety switches (disconnects), the NEC® specifies the highest mounting position at ___. Select one: a. 498.30(D) b. 490.21(C)(7) c. 626.22(A) d. 404.8(A) e. none of these-there is no NEC® requirement
d. 404.8(A)
134.38 For spas and hot tubs in other than single-family dwellings, a clearly labeled emergency shutoff or control switch for the purpose of stopping the motor(s) that provide power to the recirculation system and jet system shall be installed at a point readily accessible to the users and not less than ___ away, adjacent to, and within sight of the spa or hot tub. Select one: a. 10 b. 6 c. 20 d. 5
d. 5
134.33 A light switch (the NEC® calls this a "switching device") for underwater swimming pool lights must be located at least ___ feet horizontally from the inside edge of the pool. Select one: a. 15 b. 10 c. 6 1/2 d. 20 e. 5
e. 5
130.1 ___ can be described as the point of demarcation between where the serving utility ends and the premises wiring begins. Select one: a. Lateral b. Attachment c. Mast service d. Service point
d. Service point
131.28 Electrical systems that are required to be grounded are connected to earth in a manner that will limit the voltage imposed by ___. Select one: a. line surges b. lightning c. unintentional contact with higher-voltage lines d. all of these
d. all of these
128.37 Figure 128.302 Refer to Figure 128.302. The load will be energized when the switches are in which condition? Select one: a. I open with II & III closed b. I closed with II & III open c. I & II open with III closed d. none of these
d. none of these
134.34 An underwater pool luminaire is permitted to be connected to which of these 2-wire circuits?I. 24-volt II. 120-volt III. 277-volt Select one: a. II or III only b. I or II or III c. I only d. II only e. I or II only
e. I or II only
134.26 NEC® 680.2 describes a "permanently installed pool" as ___.I. one constructed in or partially in the groundII. a pool with a water depth greater than 42 in.III. any pool inside of a building Select one: a. I only b. II only c. I or II only d. I or III only e. I or II or III
e. I or II or III
134.32 You have a set of plans that requires lighting fixtures (luminaires) to be installed on the ceiling directly above an indoor pool. The ceiling height is 10 feet above the decking around the pool. You should make sure that these fixtures are ___.I. of a totally enclosed type II. connected to a branch circuit that is GFCI protectedIII. at least 7 ft-6 in above the maximum water level Select one: a. I & III only b. I & II only c. II & III only d. III only e. I, II & III
e. I, II & III
130.8 A breaker panel should be readily and easily accessible at all times. Select one: a. True b. False
a. True
134.12 The Standard for Electrical Safety in the Workplace is NFPA ___. Select one: a. 70 b. 70E
b. 70E
130.13 Figure 130.103 Refer to Figure 130.103. Circuit 8 is connected to the ___ busbar. Select one: a. AØ b. BØ
b. BØ
134.6 The NEC® ___ underwater pool luminaires to be connected to a 240-volt circuit. Select one: a. permits b. does not permit
b. does not permit
131.3 An equipment bonding jumper (BJ) is the connection between two or more portions of the ___ conductor. Select one: a. ungrounded b. equipment grounding c. grounded d. any of these
b. equipment grounding
134.28 A disconnecting means (or disconnect switch) for a swimming pool circulation pump must be installed ___. Select one: a. at least 5 feet from the inside wall of the pool b. readily accessible c. so that it is visible from the pump d. all of these
d. all of these
130.25 Service-drop conductors from a 277/480-volt, 3Ø, 4-wire transformer are run over a drive-thru. Trucks cannot enter the drive-thru because of a bar hanging over the entrance. The minimum clearance (or height) above the drive-thru is ___ feet. Select one: a. 8 b. 10 c. 12 d. 15 e. 18
c. 12
134.7 Permanently-wired radiant heaters shall be mounted at least ___ feet vertically above the pool deck, unless approved otherwise. Select one: a. 5 b. 10 c. 12 d. 15
c. 12
130.35 A duct heater has a nameplate rating of 6.32 KW @ 250 volts. If the duct heater is operated at 230 volts and is used for eight hours per day, it will cost $____ to operate for one year (365 days). The power cost is 14.7 cents per kW-hour. Select one: a. $18,454.40 b. $2,712.80 c. $4,244.84 d. $2,296.11
d. $2,296.11
130.33 What is the monthly energy cost to operate a 200-watt high-pressure sodium lamp? Electricity costs $0.11 per kW-hr and the lamp will be ON for 12 hours per day. There are 30 days in a billing month. Select one: a. $660 b. $6.60 c. $8.80 d. $7.92 e. $15.94
d. $7.92
131.5 Article ___ in the NEC® covers grounding and bonding of electrical systems. Select one: a. 240 b. 280 c. 422 d. 250 e. 424
d. 250
134.19 When a worker ___, energized electrical work is safe. Select one: a. wears proper protective equipment b. has received special education and training c. is qualified d. none of these
d. none of these
128.28 How much current is flowing in the neutral conductor at (c) in Figure 128.209? Select one: a. 2 b. 0 c. 5 d. 4 e. none of these
a. 2
129.16 The duct heater contains 4 heating elements that are equally rated. Each has the same power and voltage rating. An equivalent schematic is shown at the right.Refer to Figure 129.105. If the resistance of each element is 20 ohms, the duct heater will draw ___ amps. Select one: a. 48 b. 40 c. 6 d. 12 e. 24
e. 24
128.34 Figure 129.105 The duct heater contains 4 heating elements that are equally rated. Each has the same power and voltage rating. An equivalent schematic is shown at the right. Refer to Figure 129.105. The voltage applied to element R2 is ___ volts. Select one: a. 240 b. 60 c. 480 d. 120 e. none of these
a. 240
129.34 From NEC® Table 8 in Ch 9, the overall diameter of a 1/0 bare stranded copper conductor is ___ inches. Select one: a. .1855 b. .372 c. .074 d. .486 e. .109
b. .372
129.39 There is a total of 29 current-carrying conductors in a conduit. The conduit contains both 10 AWG and 12 AWG THHN/THWN copper conductors. The 10 AWG conductors now have a corrected ampacity of ___ amps. Select one: a. 13.5 b. 30 c. 11.25 d. 18 e. 14
d. 18
128.29 Refer to Figure 128.210. The current flowing through Breaker 4 (I LA-4) is ___ amps. Select one: a. 3.00 b. 10.7 c. 15.1 d. 8.75 e. 13.7
a. 3.00
128.35 The duct heater contains 4 heating elements that are equally rated. Each has the same power and voltage rating. An equivalent schematic is shown at the right. Refer to Figure 129.105. If the resistance of each element is 20 ohms, the duct heater will draw ___ amps. Select one: a. 48 b. 40 c. 6 d. 12 e. 24
e. 24
128.24 For the circuit shown in Figure 128.203, the fixed resistance of Lamp 2 is ___ ohms. Select one: a. 144 b. 75 c. 384 d. 96 e. 192
e. 192
128.6 What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? Select one: a. The load of higher resistance would overheat and probably be damaged. b. The load of lesser resistance would overheat and probably be damaged. c. No effect until one load is turned off or opens. d. No effect.
a. The load of higher resistance would overheat and probably be damaged.
130.2 Services for one- and two-family dwellings are most often rated ___. Select one: a. 120/208-volt, three-phase, 4-wire b. 277/480-volt, three-phase, 4-wire c. 120/240-volt, single-phase, 3-wire d. none of these
c. 120/240-volt, single-phase, 3-wire
129.40 How much current can a #10 THHN/THWN conductor carry where it is installed in a conduit with other wires? There are eight current-carrying conductors in the conduit. The conduit is installed through the bar joists above the ceiling where the temperature is 141 degrees Fahrenheit. Don't forget to use the 90°C column in NEC® Table 310.16 for ampacity correction. Select one: a. 28 b. 14.21 c. 23.2 d. 16.24 e. 13.2
d. 16.24
128.19 Panel LA is a 120/240-volt 1Ø, 3-wire panelboard and the panel schedule is shown in Figure 128.232. Circuits 4 & 6 will share a neutral. Circuit 4 is pulling 9 amps and Circuit 6 is drawing 15 amps. How much current is flowing in the neutral? Select one: a. 24 b. 9 c. 15 d. 6 e. none of these
d. 6
129.15 The duct heater contains 4 heating elements that are equally rated. Each has the same power and voltage rating. An equivalent schematic is shown at the right. Refer to Figure 129.105. The voltage applied to element R2 is ___ volts. Select one: a. 240 b. 60 c. 480 d. 120 e. none of these
a. 240
128.5 Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and Ckt. 9 is drawing 16 amps, how much current is flowing in the neutral? Select one: a. 3 b. 13 c. 16 d. 29
a. 3
129.29 What is the minimum trade size Schedule 80 PVC required to contain four 8 AWG THHN/THWN copper conductors? Select one: a. 3/4 b. 1 c. 1 1/2 d. 1 1/4 e. none of these
a. 3/4
128.21 Refer to Figure 128.201. The resistance of Lamp 2 is ___ ohms. Select one: a. 56.33 b. 2.31 c. 26.31 d. 48.0 e. 28.17
a. 56.33
129.10 Refer to Figure 128.301. The total resistance of the circuit is ___ ohms. Select one: a. 7.1 b. 3.55 c. 14.2 d. 28.4
a. 7.1
129.45 Tamper-resistant receptacles are required in a dwelling unit basement. Select one: a. True b. False
a. True
128.31 You are to install a 20-amp 240-volt branch circuit that is fed from a 2-pole breaker in the panelboard shown in Figure 128.182. The breaker is installed in spaces 6 & 8. The load has a nameplate rating of 3830 watts at 230 volts. How much current will have to be carried by the breaker in space 6? Select one: a. 17.38 b. 13.81 c. 16.65 d. 15.96 e. 15.04
b. 13.81
128.27 Figure 128.206For the circuit shown in Figure 128.206, the line current that should be indicated on Ammeter #2 is ___ amps. This is the current flowing through the terminal on Breaker 16. Select one: a. 19.79 b. 21.67 c. 20.42 d. 19.17 e. 40.83
b. 21.67
129.2 Trade size ___ is the minimum size RMC (rigid metal conduit) that can contain six each 8 AWG copper THHN/THWN conductors. Select one: a. 1/2 b. 3/4 c. 1 d. 1 1/4 e. 1 1/2
b. 3/4
128.33 Figure 129.104Both the schematic (near right) and the pictorial drawing (far right) are shown. The fixed resistance of EACH of the four elements in the furnace is 40 ohms. Refer to Figure 129.104. When connected to the circuit, the total current drawn by the furnace ( all four heating elements together) is ___ amps. Select one: a. 48 b. 6 c. 12 d. 24 e. 40
b. 6
129.14 Both the schematic (near right) and the pictorial drawing (far right) are shown. The fixed resistance of EACH of the four elements in the furnace is 40 ohms. Refer to Figure 129.104. When connected to the circuit, the total current drawn by the furnace (all four heating elements together) is ___ amps. Select one: a. 48 b. 6 c. 12 d. 24 e. 40
b. 6
129.43 Seven 1/0 AWG THHN/THWN copper current-carrying conductors are installed in a conduit. The conduit is installed in an area where the summertime temperature is 152ºF. What is the maximum size OCP permitted to protect the conductors in the conduit? Select one: a. 150 b. 70 c. 100 d. 175 e. none of these
b. 70
129.31 A short length of EMT is run between two panels. The ampacity values for the conductors in this EMT need not be derated, as long as the length of the EMT does not exceed ___. Select one: a. 12 inches b. 18 inches c. 24 inches
c. 24 inches
129.32 According to Table 4 in Chapter 9 in the NEC®, the total cross-sectional area of a 2" FMC is ___ in2. Select one: a. 3.343 b. 3.246 c. 3.269 d. 3.630 e. 3.205
c. 3.269
129.28 A cross-sectional representation is shown at the right. This is a 11/2 trade size RMC with the approximate dimensions. A single 3 AWG THWN/THHN conductor is shown lying inside the conduit. If a run of conduit was made between two pull boxes, the maximum number of these 3 AWG conductors that can be installed in the RMC is ___. To answer correctly, refer to the NEC® requirements. Select one: a. 9 b. 16 c. 8 d. 7 e. 15
c. 8
128.43 The neutral has been removed from the neutral bar in the circuit shown in Figure 128.407. The voltage dropped across Lamp 2 is ___ volts. Select one: a. 0 b. 240 c. 80 d. 120 e. 160
c. 80
128.18 Refer to the panel schedule shown in Figure 128.231. The current flowing through circuit breaker 6 is ___ amps. he TV's nameplate shows 450 W at 120 volts. The nameplate on the freezer shows 7.5 A @ 120 volts. To serve these loads, you have two circuits with a shared neutral. Assume that both loads are operating. Select one: a. 4.5 b. 3.75 c. 11.25 d. 7.5 e. 16
d. 7.5
129.23 What part of the NEC® is a reference for calculating conduit fill where all conductors are the same size? Select one: a. Article 100 b. Table 314.16(A) c. Table 310.15(B)(16) d. Annex C
d. Annex C
129.21 The number of conductors permitted in 80 PVC is specified in Table ___. Select one: a. 310.13 b. 310.15(B)(16) c. 347.2 d. C.10, Annex C
d. C.10, Annex C
129.18 This piece of equipment contains 4 heating elements that are equally rated. Each has the same power and voltage rating. Refer to Figure 129.106. With the equipment energized and the power used by the element connected at T3 & T4 is 1.2 kW, the power used by the equipment (all 4 elements) ___. Select one: a. is 2.4 kW b. can't be determined c. is 0.6 kW d. is 4.8 kW e. is 1.2 kW
d. is 4.8 kW
129.41 When they are installed in a conduit with other circuits, 10 AWG THHN/THWN circuit conductors can carry ___ amps. There are a total of 32 current-carrying conductors in the conduit. The conduit is run 20 feet from the panel to a pull box. The conduit is located above the ceiling where the temperature is 125 degrees Fahrenheit. Don't forget to use the Table 310.16 in the 90° C column. Select one: a. 10.72 b. 26.6 c. 10.64 d. 9.38 e. 12.16
e. 12.16
128.50 A copier is connected to circuit LA-1. A microwave is connected circuit LA-3. These two circuits share a neutral. The copier should draw 13.2 amps at 120 volts. The microwave is rated to use 1,800 watts at 120 volts. Circuits LA-1 and LA-3 originate in a 120/240-volt, 1Ø, 3-wire panelboard. If the neutral is disconnected from the neutral bar while the equipment is operating, there will be ___ volts applied to the copier. Select one: a. 56 b. 120 c. 112 d. 184 e. 128
e. 128
129.26 What is the minimum trade size FMC required to contain three 1/0 AWG THHN/THWN copper conductors? Select one: a. 1/2 b. 1 1/4 c. 3/4 d. 1 e. none of these
e. none of these
128.38 Figure 128.303 A furnace with four resistance-heating elements installed is shown above at the left. The schematic for this equipment is shown at the right. Each element is rated at 1,200 watts at 250 volts. Refer to Figure 128.303. The amount of current flowing through element R1 is equal to the amount of current flowing in ___. Select one: a. R 2 b. R 2 , R 3 & R 4 c. R 4 d. R 3
b. R 2 , R 3 & R 4
129.33 Using Table 4 in Chapter 9 in the NEC®, which of the following 2 1/2-inch raceways has the smallest cross-sectional area? Select one: a. LFMC (liquid tight flexible metal conduit) b. Schedule 40 PVC (rigid polyvinyl chloride conduit) c. RMC (rigid metal conduit) d. EMT (electrical metallic tubing)
b. Schedule 40 PVC (rigid polyvinyl chloride conduit)
129.30 What is the minimum size Schedule 40 PVC required where sixteen 10 AWG THHN/THWN copper conductors are to be pulled into the conduit? Select one: a. 3/4 b. 1 c. 1 1/4 d. 1 1/2 e. 1/2
c. 1 1/4
129.50 Which of the following locations are required to have GFCI protection for receptacles? I. Unfinished basement II. Finished basement Select one: a. I b. II c. I and II d. Neither
c. I and II
128.46 Figure 128.418The neutral has been broken in the circuit shown in Figure 128.418. The current through Lamp F (IF) with the neutral opened is ___ amps. Select one: a. 6 b. 3 c. 8 d. 1 e. 2
d. 1
129.19 A piece of FMC (flexible metal conduit) must be at least a trade size ___ where twelve each 8 AWG THHN/THWN conductors are to be installed. Select one: a. 2 b. 3/4 c. 1 d. 1 1/4 e. 1 1/2
d. 1 1/4
129.20 Trade size ___ is the minimum size Schedule 40 PVC (rigid polyvinyl chloride conduit) that can contain thirteen each 8 AWG copper THHN/THWN conductors. Select one: a. 1/2 b. 3/4 c. 1 d. 1 1/4 e. 1 1/2
d. 1 1/4
129.44 Before corrections, the maximum allowable ampacity of a 10 AWG copper THHN/THWN conductor is ___ amperes. Select one: a. 25 b. 30 c. 35 d. 40
d. 40
128.2 Two 20-amp circuits with a shared neutral are fed from a 120/240-volt, 1Ø panel. If the ungrounded circuit conductors are connected to breakers 1 and 2, which of the following will happen when a 16-amp load is connected to Circuit 1 and a 14-amp load is connected to Circuit 2? Select one: a. One of the ungrounded conductors will be overloaded. b. The grounded (neutral) conductor will be overloaded. c. 120-volt equipment could be destroyed because a higher voltage will be applied. d. Any of these e. None of these
b. The grounded (neutral) conductor will be overloaded.
128.30 A 12/3 cable is installed from a 120/240-V, 1Ø panel and feeds a split-wired duplex receptacle. One "hot" is connected to a 20A breaker in panel space 1. The second "hot" is connected to a 20A breaker in space 3. A 16-amp load is connected to the upper receptacle and a 14-amp load is connected to the lower receptacle. Which of the following will happen if the neutral is removed from the receptacle? Select one: a. One of the ungrounded conductors will be overloaded. b. The grounded "neutral" conductor will be overloaded. c. Because a higher voltage will be applied, 120-volt equipment could be destroyed. d. any of these e. none of these
c. Because a higher voltage will be applied, 120-volt equipment could be destroyed.
128.44 Figure 128.417 The neutral has been removed from the neutral bar in the circuit shown in Figure 128.417. The current through Lamp S (IS) with the neutral open is ___ amps. Select one: a. 1.5 b. 4.5 c. 3 d. 2 e. 1.125
d. 2
134.10 Section ___ in the NEC® covers bonding of swimming pools. Select one: a. 640.24 b. 650.23 c. 680.22 d. 680.26
d. 680.26
128.15 The Code reference that specifies the type of disconnecting means (circuit breaker for example) that can be used on a multiwire branch circuit that feeds devices mounted on the same yoke [a stack switch or a duplex receptacle for example] is ___.Note: Select N/A ( not applicable) if there is not an NEC® requirement. Select one: a. Article 100 b. 404.8(A) c. 240.15(B)(1) d. N/A
240.15(B)(1)
134.37 For electrically-operated swimming pool covers, the electric motor and controller shall be connected to a circuit protected by a(n) ___. Select one: a. arc-fault circuit interrupter b. immersion-detection circuit interrupter c. ground-fault circuit interrupter d. ultra-violet-ray (UV) detection sensor e. all of these
c. ground-fault circuit interrupter
130.11 All openings in an electrical panel must be closed. These openings include ___ that have been removed and remain open. Select one: a. breaker knockouts b. conduit knockouts c. both a and b d. neither a nor b
??
134.29 When receptacles that provide power for water-pump motors or for other loads directly related to the circulation and sanitation system are located at least 6 feet and 10 feet from the inside walls of the pool, these receptacles are required to meet which of the following conditions?I. They consist of single receptacles.II. They employ a locking configuration.III. They are of the grounding type.IV. They have GFCI protection. Select one: a. III & IV only b. I & IV only c. I, III & IV d. IV only e. I & II only
a. III & IV only
134.11 Without exceptions, all metal parts of an indoor spa or hot tub must be bonded. Select one: a. True b. False
a. True
134.22 When in a swimming pool, a person may sustain electrical shock by either direct or indirect contact. Select one: a. True b. False
a. True
134.27 When a swimming pool has a circulation pump, the disconnecting means must be not more than 50' from the pump. Select one: a. True b. False
a. True
134.39 A luminaire, that is located 11 feet above the level of the water in an indoor spa and located directly above the spa, is required to be GFCI protected. Select one: a. True b. False
a. True
129.13 Both the schematic (near right) and the pictorial drawing (far right) are shown. The fixed resistance of EACH of the four elements in the furnace is 40 ohms. Refer to Figure 129.104. If the leads of a voltmeter are placed at T3 and T4, the meter will indicate ___ volts. Select one: a. 240 b. 120 c. 480 d. 0 e. none of these
b. 120
130.17 How many kW does a 100-ampere residential service draw when fully loaded? Select one: a. 10 kW b. 24 kW c. 100 kW d. 240 kW
b. 24 kW
131.26 An equipment grounding conductor (EGC) is the conductor that is ___. Select one: a. connected between the hot and cold water pipes at a water heater b. installed with the branch-circuit conductors in a conduit or cable run c. connected to the neutral bar in the service panel, the ground rod, the incoming main water service pipe, and/or the steel building structure d. installed between the neutral bar and the ground bar in the service panel
b. installed with the branch-circuit conductors in a conduit or cable run
131.4 To minimize conductor insulation damage and arcing damage to electrical equipment during a ground fault or a short circuit, ___ should be minimized. Select one: a. ampere level of the fault current b. time duration of the fault c. both a and b d. neither a nor b
b. time duration of the fault
130.4 Which term best describes a service lateral? Select one: a. overhead drop b. underground feed c. service entrance d. service ground
b. underground feed
128.32 Figure 129.104Both the schematic (near right) and the pictorial drawing (far right) are shown. The fixed resistance of EACH of the four elements in the furnace is 40 ohms. Refer to Figure 129.104. If the leads of a voltmeter are placed at T1 and T8, the meter will indicate ___ volts. Select one: a. 120 b. 480 c. 0 d. 240 e. none of these
c. 0
129.27 What is the minimum size LFMC (liquid tight flexible metal conduit) required where sixteen 10 AWG THHN/THWN copper conductors are to be pulled into the conduit? Select one: a. 2 b. 1 1/2 c. 1 d. 2 1/2 e. 1 1/4
c. 1
130.29 If a 95-watt lamp operates for 11 hours, the utility will bill for ___ kWh. Select one: a. 1.158 b. 8.636 c. 1.045 d. 10.450 e. 11.579
c. 1.045
128.25 Figure 128.203For the circuit shown in Figure 128.203, the sum of the currents through Lamps 1 & 2 ( added together) is ___ amps.
c. 1.25
134.31 An intercom speaker must be located at least ___ feet from the inside wall of a swimming pool. Select one: a. 6 b. 20 c. 10 d. 12
c. 10
130.16 Figure 130.104 Refer to Figure 130.104. In amps, how much current will flow in the circuit conductor connected to terminal 13 on the 1-pole breaker? Select one: a. 65.8 b. 47.7 c. 52.7 d. 42.1 e. 26.3
c. 52.7
129.47 Receptacles in a finished basement must be installed such that no point measured horizontally along the floor line of any wall space is more than ____ feet from a receptacle outlet. Select one: a. 2 b. 4 c. 6 d. 12 e. No such requirement
c. 6
134.24 When swimming pool installations are made, Article ___ in the NEC® provides the requirements for these installations. Select one: a. 250 b. 430 c. 680 d. 240 e. 424
c. 680
129.49 A dwelling unit unfinished area uses 12 AWG NM wiring method and a 20A OCPD. Which of the following receptacles meets the NEC® requirements? Select one: a. TR 15A receptacle b. TR 20A receptacle c. Either a or b d. None of these
c. Either a or b
134.36 The motor and controller ("open/close" switch) that operates a swimming pool cover is required to be ___.I. at least 5 feet from the inside wall of the poolII. supplied by a GFCI-protected circuit Select one: a. I only b. II only c. both I & II d. neither I nor II
c. both I & II
130.7 For billing purposes, the utility uses a watt-hour meter to measure and record ___. Select one: a. wattage b. time c. both a and b d. neither a nor b
c. both a and b
134.23 When in a swimming pool, a person may sustain electrical shock by ___ contact. I. direct II. indirect Select one: a. I only b. II only c. either I or II d. neither I nor II
c. either I or II
131.1 The drawing shown here is a ___. Select one: a. pipe union b. spreader bar c. ground clamp d. T&B support
c. ground clamp
131.22 The drawing shown here is a ___. Select one: a. pipe union b. spreader bar c. ground clamp d. T&B support
c. ground clamp
134.2 The shock hazard to a person in a swimming pool is ___ in comparison to that of a normal touch shock. Select one: a. lower b. similar c. higher d. less
c. higher
131.35 Not more than one conductor shall be connected to the grounding electrode by a single clamp or fitting unless the clamp or fitting is ___. Select one: a. 0.043" in thickness b. cast bronze or brass c. listed for multiple conductors d. none of these
c. listed for multiple conductors
131.25 The grounding blade on an attachment plug is ___ than the current-carrying conductor blades. This is to ensure that the grounding connection is made before the current-carrying conductor connections and breaks its connection after the current-carrying conductor connections (first make-last break). Select one: a. larger b. more durable c. longer d. tarnish-resistant
c. longer
131.30 Green main bonding jumper screws that are furnished with residential type panels should be installed in ___. Select one: a. main and sub panels b. sub panels c. main panels only d. meter bases
c. main panels only
