ANSWERS | GRADED A+| PASS ON FIRST ATTEMPT | BRAND NEW
All single-phase, 15 or 20-ampere branch-circuits supplying outlets or devices installed in
residential kitchens or similar rooms, shall be protected by a listed arc-fault circuit
interrupter of the _____ type. - ANSWER Combination
In dwelling units, hallways of _____ feet or more in length are required to have at least one
(1), 15- or 20-ampere rated 125-volt receptacle outlet. - ANSWER 10
Electrical outlet boxes installed in walls and ceilings are required to be __________. -
ANSWER accessible
Raceways installed in solid rock shall be permitted to be buried at lesser depths than
generally required, when covered by at LEAST _____ inches of concrete, extending down to
the rock. - ANSWER two
The MINIMUM number of 120-volt, 15-ampere, general lighting branch circuits required for
a dwelling that has 70 feet by 30 feet of habitable space is _____. - ANSWER 4
When the heating, air-conditioning, or refrigeration equipment is installed on the roof of an
apartment complex, a 125-volt, 15- or 20-ampere rated receptacle outlet _____. -
ANSWER shall be located on the same level and within 25 feet of the heating, air-
conditioning, or refrigeration equipment
Where nonmetallic sheathed cable (NM) is run at angles with joists in unfinished basements,
the smallest three (3) conductor cable permitted to be installed directly to the lower edges
of the joists is size _____. - ANSWER 8 AWG
1
, All 125-volt, single-phase, 15- and 20-ampere rated receptacles installed in residential
garages shall be _____.
I. protected by a listed arc-fault interrupter
II. provided with ground-fault circuit-interrupter protection - ANSWER II only
Where a 120-volt lighting branch-circuit is to supply only six (6) 100 watt, 120-volt,
incandescent luminaires, determine the approximate total current on this branch circuit. -
ANSWER 5 Amperes
In a dwelling unit bedroom, any wall space that is at LEAST _____ feet or more in width must
be provided with a general use receptacle outlet. - ANSWER two
The MINIMUM internal depth of a box that is intended to enclose a flush mounted device
supplied by 14 AWG conductors shall be _____. - ANSWER 15/16 inch
Receptacle outlets on a 20-ampere rated small appliance branch circuit serving kitchen
countertops in a dwelling unit are to be rated _____.
I. 15 amperes
II. 20 amperes - ANSWER either I or II
Where a 40-gallon storage-type electric water heater has a nameplate rating of 4,500 watts
@ 240 volts, what is the MAXIMUM standard size circuit breaker the NEC® permits to
protect the water heater? - ANSWER 30 amperes
Given: You are to install a 20 ampere, 120 volt, GFCI-protected, buried, branch circuit that
supplies landscape lighting for a residence. If UF cable is used for this installation, it is
required to have a ground cover of at LEAST __________. - ANSWER 12 inches
A receptacle outlet installed for a gas or electric clothes dryer in the laundry room of a
dwelling unit must be installed within at LEAST _____ feet of the intended location of the
dryer. - ANSWER six
2
All single-phase, 15 or 20-ampere branch-circuits supplying outlets or devices installed in
residential kitchens or similar rooms, shall be protected by a listed arc-fault circuit
interrupter of the _____ type. - ANSWER Combination
In dwelling units, hallways of _____ feet or more in length are required to have at least one
(1), 15- or 20-ampere rated 125-volt receptacle outlet. - ANSWER 10
Electrical outlet boxes installed in walls and ceilings are required to be __________. -
ANSWER accessible
Raceways installed in solid rock shall be permitted to be buried at lesser depths than
generally required, when covered by at LEAST _____ inches of concrete, extending down to
the rock. - ANSWER two
The MINIMUM number of 120-volt, 15-ampere, general lighting branch circuits required for
a dwelling that has 70 feet by 30 feet of habitable space is _____. - ANSWER 4
When the heating, air-conditioning, or refrigeration equipment is installed on the roof of an
apartment complex, a 125-volt, 15- or 20-ampere rated receptacle outlet _____. -
ANSWER shall be located on the same level and within 25 feet of the heating, air-
conditioning, or refrigeration equipment
Where nonmetallic sheathed cable (NM) is run at angles with joists in unfinished basements,
the smallest three (3) conductor cable permitted to be installed directly to the lower edges
of the joists is size _____. - ANSWER 8 AWG
1
, All 125-volt, single-phase, 15- and 20-ampere rated receptacles installed in residential
garages shall be _____.
I. protected by a listed arc-fault interrupter
II. provided with ground-fault circuit-interrupter protection - ANSWER II only
Where a 120-volt lighting branch-circuit is to supply only six (6) 100 watt, 120-volt,
incandescent luminaires, determine the approximate total current on this branch circuit. -
ANSWER 5 Amperes
In a dwelling unit bedroom, any wall space that is at LEAST _____ feet or more in width must
be provided with a general use receptacle outlet. - ANSWER two
The MINIMUM internal depth of a box that is intended to enclose a flush mounted device
supplied by 14 AWG conductors shall be _____. - ANSWER 15/16 inch
Receptacle outlets on a 20-ampere rated small appliance branch circuit serving kitchen
countertops in a dwelling unit are to be rated _____.
I. 15 amperes
II. 20 amperes - ANSWER either I or II
Where a 40-gallon storage-type electric water heater has a nameplate rating of 4,500 watts
@ 240 volts, what is the MAXIMUM standard size circuit breaker the NEC® permits to
protect the water heater? - ANSWER 30 amperes
Given: You are to install a 20 ampere, 120 volt, GFCI-protected, buried, branch circuit that
supplies landscape lighting for a residence. If UF cable is used for this installation, it is
required to have a ground cover of at LEAST __________. - ANSWER 12 inches
A receptacle outlet installed for a gas or electric clothes dryer in the laundry room of a
dwelling unit must be installed within at LEAST _____ feet of the intended location of the
dryer. - ANSWER six
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