423
a. 15
A 240-volt, 20-amp circuit may supply ___ linear feet of electric baseboard heat. The baseboard heaters being used are rated at 250 watts per linear foot at 240 volts. Select one: a. 15 b. 12 c. 16 d. 18
e. I or II only
A branch circuit provides power to a receptacle in bathroom #1 in a dwelling. This branch circuit is permitted to also provide power to ___. I. two other receptacles, two luminaires, plus an exhaust fan in bathroom #1. II. two other receptacles in bathroom #1 plus receptacles in bathrooms #2 & #3 III. one luminaire in bathroom #1 and one luminaire in bathroom #2 Select one: a. II only b. I only c. I, II, or III d. III only e. I or II only
b. II or III only
A receptacle installed on the laundry branch circuit in a dwelling, having no other receptacles, can be a ___. I. 15-ampere single receptacle II. 15-ampere duplex receptacle III. 20-ampere duplex receptacle Select one: a. I, II, or III b. II or III only c. III only d. I or III only e. I or II only
e. I, II, or III
A refrigerator receptacle in a dwelling can be fed from a ___. I. 15-ampere individual branch circuit II. 20-ampere small-appliance branch circuit III. 20-ampere individual branch circuit Select one: a. I only b. II only c. I or II only d. I or III only e. I, II, or III
c. 100
A single receptacle installed on an individual branch circuit shall have an ampere rating not less than ___ % of the rating of the branch circuit. Select one: a. 75 b. 80 c. 100 d. 50 e. 125
a. at or below
Accessory buildings that have a floor located ___ grade level not intended as habitable rooms and limited to storage or work areas shall have ground-fault circuit-interrupter protection for all 125-volt, 15- and 20-ampere receptacles. Select one: a. at or below b. above c. below d. all of these
a. 6
Appliance receptacle outlets installed in a dwelling for specific appliances, such as laundry equipment, shall be placed within ___ feet of the intended location of the appliance. Select one: a. 6 b. 12 c. 5 d. 8 e. 3
a. I, II and III
Branch circuits in dwelling units shall supply only loads within that dwelling unit or loads associated only with that dwelling unit. Branch circuits required for the purpose of lighting, ___, or other needs for public or common areas shall not be supplied from a dwelling-unit panelboard. I. communications II. signal III. central alarm Select one: a. I, II and III b. I only c. III only d. II only
d. all of these
Built-in dishwashers and trash compactors intended for dwelling use are allowed to be cord-and-plug-connected when ___. Select one: a. the receptacle is located in the same space or adjacent to b. the receptacle is located to avoid physical damage to the cord c. the cord is 3 to 4 feet long and the receptacle is accessible d. all of these
c. I & II only
Circuit breakers shall be marked with a voltage rating not less than the nominal system voltage that is indicative of their capability to interrupt fault currents ___. I. between phases II. from phase to ground III. between the neutral and ground Select one: a. I, II & III b. I only c. I & II only d. II & III only
b. maintained
Coves for luminaires shall have adequate space and shall be so located that the lamps and equipment can be properly installed and ___. Select one: a. tested b. maintained c. protected from physical damage d. listed
e. vertical
Enclosures for overcurrent devices shall be mounted in a(n) ___ position. Select one: a. operable b. remote c. horizontal d. upright e. vertical
e. I & II only
For a one-family dwelling, at least one receptacle outlet shall be installed in each ___. I. basement II. attached garage III. detached garage without power Select one: a. I & III only b. I, II & III c. II only d. I only e. I & II only
c. Outdoor outlets are permitted to be supplied from the small-appliance branch circuits.
For dwelling units, all of the following are true statements, EXCEPT ___. Select one: a. The outlet for kitchen refrigeration equipment may be supplied by an individual 15-amp branch circuit. b. The clothes washer shall be supplied by a 20-amp branch circuit, and outlets outside the laundry area are not permitted on this circuit. c. Outdoor outlets are permitted to be supplied from the small-appliance branch circuits. d. Bathroom receptacles shall be supplied by a 20-amp branch circuit that shall have no other outlets.
d. that serve the countertop surface
Ground-fault circuit-interrupter protection MUST be provided in residential kitchens for receptacles ___. Select one: a. that also serve the dining room b. that are on the same circuit as the outdoor receptacles c. that are beneath the countertop d. that serve the countertop surface
e. 8
Hanging luminaires, located directly above any part of the bathtub, shall be installed so that the luminaire is not less than ___ feet above the top of the bathtub rim. Select one: a. 10 b. 3 c. 5 d. 6 e. 8
a. 1/ 8
If a switch or circuit breaker serves as the disconnecting means for a permanently connected motor-driven appliance of more than ___ horsepower, it shall be located within sight from the motor controller. Select one: a. 1/ 8 b. 1/ 4 c. 1/ 2 d. 3/ 4
b. 1
In a dwelling unit, a hallway measuring 21 1/ 2 feet in length requires a minimum of ___ receptacle outlets(s). Select one: a. 3 b. 1 c. 0 d. 2 e. 4
b. 24, 12
In a dwelling, one receptacle outlet shall be installed at each island or peninsular countertop with a long dimension of ___ inches or greater and a short dimension of ___ inches or greater. Select one: a. 12, 24 b. 24, 12 c. 24, 48 d. 48, 24
b. overcurrent protection devices
In a multiple-occupancy building, each occupant shall have access to his or her own ___. Select one: a. panelboard b. overcurrent protection devices c. receptacles d. service-entrance assembly
b. 36
In dwelling units, at least one wall receptacle shall be installed in bathrooms. The receptacle shall be within ___ inches of the outside edge of each basin. Select one: a. 18 b. 36 c. 24 d. 12
b. 20 in.
In dwelling units, receptacle outlets required for the kitchen countertops must be located above, but not more than ___ above, the countertop. Select one: a. 12 in. b. 20 in. c. 18 in. d. 24 in.
a. 12
In each dwelling kitchen and dining area, a receptacle outlet shall be installed at each counter space ___ inches or wider. Select one: a. 12 b. 24 c. 48 d. 36
a. cannot
Incandescent luminaires that have open lamps and pendant-type luminaires ___ be installed in clothes closets where proper clearance is maintained from combustible contents. Select one: a. cannot b. can
a. 6
Interior stairway lighting outlets in dwellings shall be controlled by a wall switch at each floor level where the difference between levels is ___ steps or more. Select one: a. 6 b. 12 c. 11 d. 3 e. 4
c. 194ºF
Luminaires shall be constructed, installed, or equipped with shades or guards so that combustible material is not subjected to temperatures in excess of ___. Select one: a. 60ºC b. 90ºF c. 194ºF d. 75ºC e. 167ºF
a. 50
Multioutlet circuits rated 15 or 20 amperes can supply fixed appliances (utilization equipment fastened in place) provided the fixed appliances do not exceed ___ percent of the circuit rating. Select one: a. 50 b. 125 c. 75 d. 100
e. 9,200
One cooktop and two ovens are connected to one branch circuit in a kitchen of a one-family dwelling. The cooktop has a nameplate rating of 4 kW at 240 volts, and each oven has a nameplate rating of 5.5 kW at 240 volts. The minimum load calculation for this branch circuit is ___ watts. Select one: a. 15,000 b. 8,000 c. 11,000 d. 9.2 e. 9,200
c. insulation
Outdoor lampholders with terminals of a type that puncture the ___ shall be attached only to conductors of the stranded type. Select one: a. exterior of the building b. paint c. insulation d. none of these
a. 0.10
Receptacle faceplate covers made of insulating material shall be noncombustible and not less than ___ inch in thickness. Select one: a. 0.10 b. 0.22 c. 0.04 d. 0.01
c. both I and II
Residential bathroom receptacle outlets shall be supplied by ___. I. ground-fault protection for personnel II. at least one 20-amp branch circuit Select one: a. I only b. II only c. both I and II d. neither I nor II
a. readily accessible
Supplementary overcurrent devices shall not be required to be ___. Select one: a. readily accessible b. enclosed c. ventilated
a. 6
Surface-mounted fluorescent luminaires in clothes closets can be installed on the wall above the door or on the ceiling, provided there is a minimum clearance of ___ inches between the luminaire and the nearest point of a storage space. Select one: a. 6 b. 9 c. 3 d. 12
a. does not
The Code ___ require a lighting outlet in a clothes closet. Select one: a. does not b. does
a. 125
The ampacity of the branch-circuit conductors and the rating or setting of overcurrent protective devices supplying fixed electric space-heating equipment consisting of resistance elements, with or without a motor, shall not be less than ___ percent of the total load of the motors and the heaters. Select one: a. 125 b. 100 c. 50 d. 110 e. 80
b. 4
The maximum distance between kitchen countertop receptacles in a one-family dwelling is ___ feet. Select one: a. 2 b. 4 c. 6 d. 12
a. 6
The maximum weight of a luminaire that may be mounted by the screw shell of a brass socket is ___ pounds. Select one: a. 6 b. 2 c. 50 d. 3
a. 10
The minimum size THHN copper neutral conductor permitted for an 8 3/ 4 kW, 240-volt, 3-wire household electric range is ___ AWG. Select one: a. 10 b. 6 c. 12 d. 8 e. 14
c. 80
The rating of any one cord-and-plug-connected utilization equipment not fastened in place shall not exceed ___ % of the branch-circuit ampere rating. Select one: a. 125 b. 75 c. 80 d. 50 e. 100
c. I, II & III
Unfinished basements are defined as portions or areas of basements not intended as habitable rooms and limited to ___. I. work areas II. storage areas III. tool storage areas Select one: a. I only b. II only c. I, II & III d. I & II only
c. either I or II
Wall-mounted ovens and counter-mounted cooking units complete with provisions for mounting and for making electrical connections shall be permitted to be ___. I. cord-and-plug-connected, if for easier servicing or installation II. permanently connected Select one: a. I only b. II only c. either I or II d. neither I nor II
c. 120
Water heaters having a capacity of ___ gallons or less shall have a branch-circuit rating not less than 125% of the rating of the water heater. Select one: a. 75 b. 60 c. 120 d. 90
d. 6 1/ 2 ft.
What is the maximum allowable cord length for a cord-and-plug-connected dishwasher installed under a counter in a dwelling unit? Select one: a. 1 1/ 2 ft. b. 2 ft. c. 3 ft. d. 6 1/ 2 ft.
e. 10
What size copper equipment grounding conductor is required for a circuit having a 40-ampere overcurrent device? Select one: a. 12 b. 14 c. 8 d. 6 e. 10
d. any of these
When more than one nominal voltage system exists in a building, each ungrounded conductor of a branch circuit, where accessible, shall be identified by phase or line and system at all termination, connection, and splice points. The identification can be ___ if permanently posted at each branch-circuit panelboard from which the circuits originate. Select one: a. tagging b. marking tape c. color coding d. any of these
a. shall be located on the same level and within 25 feet of the heating, air-conditioning, or refrigeration equipment
When the heating, air-conditioning, or refrigeration equipment is installed on the roof of an apartment complex, a 15- or 20-amp receptacle ___. Select one: a. shall be located on the same level and within 25 feet of the heating, air-conditioning, or refrigeration equipment b. is not required by the Code c. is permitted to be installed on the roof where the equipment is located, provided the receptacle is not more than 75 feet from where the equipment is located d. may be connected to the line side of the equipment disconnecting means provided that the receptacle is of the GFCI type
d. 6/2
Where NM cable is run at angles with joists in unfinished basements and crawl spaces, it shall be permissible to secure cables not smaller than ___ AWG directly to the lower edges of the joists. Select one: a. 6/3 b. 8/2 c. 10/2 d. 6/2
a. ungrounded conductor
Where a change occurs in the size of the ___, a similar change shall be permitted in the size of the grounded conductor. Select one: a. ungrounded conductor b. grounding electrode conductor c. equipment grounding conductor d. main bonding jumper
c. 50
Where the NEC® specifies that one equipment shall be "within sight" of another equipment, the specified equipment shall be visible and not more than ___ feet distant from the other. Select one: a. 25 b. 10 c. 50 d. 100 e. 75
c. 1/ 8 hp
Where the branch-circuit overcurrent device is used as the appliance disconnecting means, ___ is the maximum allowable rating for a permanently connected appliance. Select one: a. 1/ 2 hp b. 1 hp c. 1/ 8 hp d. 1/ 4 hp
c. a drive-through garage door
Which of the following does not require a switched outlet according to the NEC®? Select one: a. a walk-through porch door b. a walk-through garage door c. a drive-through garage door d. an attic entrance
a. stranded
Wiring on luminaire chains and other movable parts shall be ___. Select one: a. stranded b. rated for 110ºC c. hard-usage rated d. none of these
b. Interrupting
___ rating is the highest current at rated voltage that a device is indentified to interrupt under standard test conditions. Select one: a. Ampere b. Interrupting c. Sensor d. Trip e. Overload
