CH 120

How many TV outlets are required in each bedroom per the EWR plans? Select one: a.2 b.6 c.4 d.3

a. 2

The Code section that specifies the number of bathroom branch circuits in a dwelling is ___. Select N/A (not applicable) if there is not a Code reference for this. Select one: a.210.11(C)(3) b.210.8(A)(1) c.210.8(B)(1) d.210.52(D) e.N/A

a. 210.11(C)(3)

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. When properly connected to a 480-volt circuit, the boiler will supply ___ watts of power. Select one: a.24,600 b.7,688 c.12,300 d.6,150 e.none of these

a. 24,600

What size THWN copper conductors are required to supply a 15,000 watt, 240-volt furnace? (Assume single-phase and 75°C terminations.) Select one: a.4 AWG b.6 AWG c.3 AWG d.2 AWG

a. 4

What size THWN/THHN copper wire is required to supply a clothes dryer that has the following on the manufacturer nameplate?32.5 amperes 240-volts 45-A circuit breaker Select one: a.8 AWG b.10 AWG c.6 AWG d.4 AWG

a. 8

When a rooftop air conditioner is installed on a "strip" shopping center, a 15- or 20-ampere, 125-volt receptacle is required to be installed for servicing the equipment. Additionally, if installed outside, the receptacle is required to ___.I. be located 25 feet or less from the equipment II. be AFCI protected Select one: a.I only b.II only c.both I & II d.neither I nor II

a. I only

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. If the available supply circuit is 480 volts you will connect the elements in ___. Select one: a.series b.parallel

a. series

What Article in the NEC® covers the connection of a dryer frame to an equipment grounding conductor? Select one: a.220 b.250 c.422 d.210

b. 250

The minimum demand for an electric clothes dryer in a residential load calculation is ___ watts. Select one: a.1,500 b.5,000 c.3,000 d.2,000 e.6,000

b. 5,000

The repair must be tested when complete. What test(s) apply to cord repair?I. continuity II. watertight integrity III. proper polarity Select one: a.I & II only b.I & III only c.I, II & III d.II only e.I only

b. I & III only

The NEC® ___ permit a motion sensor to control the lighting in a bathroom. The bathroom is in your customer's home and the sensor does not have a manual override switch. Select one: a.does b.does not

b. does not

When replacing a plug on a cord, the outer sheath (or jacket) must ___. Select one: a.be stripped back at least 3 inches b.extend into the plug body so that the strain relief clamp grips it c.be made watertight d.any of these

b. extend into the plug body

When extension cords are checked for insulation, an ohmmeter should indicate ___ ohms. Select one: a.0 b. (or OL)

b. infinite (or OL)

Generally, it is ___ expensive to repair a damaged extension cord than to buy a new cord. Select one: a.less b.more

b. more

In the study, are all 4 switches on the plan-north wall to be installed in a 4-gang box? Refer to EWR Drawing 9. Select one: a.Yes. b.No. c.Not enough information is provided. d.Yes, but only if they are stacked.

b. no

On EWR Drawing 9, the curved lines in the living room represent ___. Select one: a.wiring methods b.switch legs c.wall position d.

b. switch legs

The fewest number of 120-volt, 20-amp branch circuits permitted to be installed in a house is ___ when these circuits will supply power to the lighting fixtures (luminaires) in bathroom #1 plus the receptacles in all three bathrooms in a house. Select one: a.0 b.1 c.2 d.3

c. 2

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. If correctly connected to a 240-volt circuit, ___ volts are applied to each element. Select one: a.0 b.208 c.240 d.120 e.480

c. 240

A clothes dryer with a nameplate rating of 7.8 KW at 240 volts will draw ___ amps of current when operated at 208 volts. Select one: a.32.5 b.43.3 c.28.2 d.37.5 e.30.8

c. 28.2

A clothes dryer will draw ___ amps when operated at 208 volts. The dryer nameplate states that it is rated for 9.7 KW at 240 volts. Select one: a.53.81 b.5.94 c.35.03 d.40.42 e.9.7

c. 35.03

A circuit has 4 identical loads connected in parallel. The circuit voltage is 277 volts and the total connected load draws 11.2 amperes of current. The resistance of each of the identical loads is ___ ohms. Select one: a.6.18 b.24.73 c.98.93 d.1.48 e..45

c. 98.93

When a rooftop air conditioner is installed on a "strip" shopping center, a 15- or 20-ampere, 125-volt receptacle is required to be installed for servicing the equipment. Additionally, if installed outside, the receptacle is required to ___.I. have a weatherproof cover II. be GFCI protected Select one: a.I only b.II only c.both I & II d.neither I nor II

c. both

Exhaust fans are often used in laundry rooms to remove moisture. These fans can be installed in ___. Select one: a.ceilings b.walls c.either a or b d.neither a nor b

c. either

In the living room (Re: EWR Drawing 9), do the fixed glass panels count as wall space? Select one: a.No, if they are removable. b.Yes, if they slide open. c.Yes. d.No, if they are expensive.

c. yes

How much current is drawn by a 240-volt clothes dryer that has a rating of 5,400 volt-amperes? Select one: a.30 amperes b.40 amperes c.49 amperes d.22.5 amperes

d. 22.5

EWR Drawing 9 shows four switches on the north wall of the study. The plan indicates that the switches for the fan/light kit are to be installed ___. Select one: a.in a 4-gang box with the two adjacent switches b.in a 2-gang box c.in a 3-gang box with the receptacle on that wall d.in a 4-square box with a 2-gang plaster ring e.in two, individual single-gang boxes

d. 4 square

NEC® Article ___ includes a section that covers using a cord and plug as a disconnecting means for a clothes dryer. Select one: a.210 b.300 c.220 d.422

d. 422

A bathroom vanity lighting fixture will draw ___ amps when connected to a 120-volt branch circuit. The fixture has twenty-four lamps installed. Each lamp has a rating of 40 watts at 120 volts. Select one: a.0.33 b.10 c.3 d.8 e..42

d. 8

When located ___, a receptacle is required to be GFCI protected. Select one: a.on the roof of a restaurant b.in a bathroom adjacent to a basin in a restaurant c.outside on the exterior wall of a four-unit apartment building d.all of these e.none of these

d. all

When located ___, a receptacle is required to be GFCI protected. Select one: a.outside on the exterior wall of a house b.on the roof of a restaurant c.in a bathroom adjacent to a basin in a restaurant d.all of these e.none of these

d. all

According to EWR Drawing 2, what do the straight dashed lines represent? Select one: a.perpendicular areas b.visitation vestibules c.strip lighting d.exposed false beams

d. exposed

Which of the following is used to regulate the heat in electric clothes dryers? Select one: a.Capacitor b.Snap switch c.Door switch d.Thermostat

d. thermostat

Scenario 119.52The nameplate on a 1Ø boiler (big water heater) indicates that it can be operated at either 240 or 480 volts. It contains two heating elements. Each element has a rating of 12.3 KW at 240 volts.Refer to Scenario 119.52. When properly connected to a 480-volt circuit, the boiler will pull ___ amps through each branch circuit conductor. Select one: a.82 b.94.17 c.102.5 d.128.125 e.51.25

e. 51.25

An electric circuit consists of the ___. Select one: a.switches b.load c.conductors d.power source e.all of these

e. all

OSHA permits extension cords to be spliced if ___ is wrapped around the splice. Select one: a.Scotch 33 electrical tape b.friction tape c.8 mil 600-volt adhesive pads d.any of these e.none of these

e. none

The greatest number of 120-volt, 20-amp circuits you are permitted to install in a house to serve bathrooms is ___. The house has 3 bathrooms and the circuit(s) will supply only bathroom receptacles. Select one: a.0 b.1 c.2 d.3 e.unlimited

e. unlimited