• California CSLB
C10 Electrical 09/11/2026
Exam
CSLB C10 Test 1 | 120 Questions and Answers
() (Verified Answers) COMPLETE
FREQUENTLY MOST TESTED QUESTIONS WITH
COMPLETE SOLUTION /GET IT 100%
ACCURATE!(Graded A+)
The total equivalent bend in rigid conduit between pull points (outlet to outlet, fitting to fitting, or outlet to
fitting) shall not exceed _____.
A-3 quarter bends (270 degrees)
B-4 quarter bends (360 degrees)
C-5 quarter bends (450 degrees)
D-6 quarter bends (540 degrees) - Correct Answer :The Correct Answer Is B
Two 45 degrees bends plus three 90 degrees bends equals the maximum of 360 degrees total.
P 1
, • California CSLB
C10 Electrical 09/11/2026
Exam
When a branch circuit feeds both noncontiguous and continuous loads, the circuit must be sized to
accommodate 100 percent of the noncontiguous load plus what percent of the continuous load?
A-110 percent
B-115 percent
C-120 percent
D-125 percent - Correct Answer :The Correct Answer Is D
The rating of branch circuits serving continuous loads shall be not less than the noncontiguous load plus 125
percent of the continuous load.
The branch-circuit load for a single 12-kilowatt (12 kW) electric range in a dwelling is _____.
A-8 kW
B-9 kW
C-10 kW
D-11 kW - Correct Answer :The Correct Answer Is A
NEC Table 220.4(C) permits an electric range with a kW nameplate rating not exceeding 12 kW to be rated at
8kW when sizing branch circuits and feeders.
A 20-ampere laundry circuit is always required in each _____.
A-industrial wash room
B-commercial utility room
C-dwelling unit
D-motel unit - Correct Answer :The Correct Answer Is C
In dwelling units, at least one 20 amp branch circuit shall be installed for the laundry.
How many receptacles are required in a residential hallway 12 feet in length?
A-1
P 2
, • California CSLB
C10 Electrical 09/11/2026
Exam
B-2
C-3
D-4 - Correct Answer :The Correct Answer Is A
NEC Section 210.52(H) requires at least one receptacle outlet in hallways 10 feet or more in length.
How many receptacle outlets are required in a residential garage?
A-4
B-3
C-2
D-1 - Correct Answer :The Correct Answer Is D
At least one receptacle outlet to be installed in each basement and in each attached garage, or in each detached
garage with electric power.
A 125-volt single phase, 15- or 20-ampere receptacle must be installed in _____ for the servicing of heating, air
conditioning and refrigeration equipment?
A-all apartment buildings
B-one- and two-family dwellings
C-commercial buildings
D-all locations - Correct Answer :The Correct Answer Is D
Receptacle outlets are required for equipment in any location the equipment is present. The NEC has removed
the exception for equipment on rooftops of one- and two-family dwellings.
How many lighting outlets must be installed at or near heating, air-conditioning, and refrigeration equipment in
attics or crawl spaces?
A-1
B-2
C-3
P 3
, • California CSLB
C10 Electrical 09/11/2026
Exam
D-4 - Correct Answer :The Correct Answer Is A
NEC Sections 210.70(A) and(C) require at least one switched lighting outlet in these spaces.
Feeders containing a common neutral are permitted to supply how many sets of 3-wire feeders?
A-1 or 2
B-5 or 6
C-3 or 4
D-2 or 3 - Correct Answer :The Correct Answer Is D
NEC Section 215.4(A) permits two or three sets of 3-wire feeders.
Feeders containing a common neutral are permitted to supply how many sets of 4-wire feeders?
A-2
B-3
C-4
D-5 - Correct Answer :The Correct Answer Is A
NEC Section 215.4(A) permits two sets of 4-wire feeders.
Feeders containing a common neutral are permitted to supply how many sets of 5-wire feeders?
A-1
B-2
C-3
D-4 - Correct Answer :The Correct Answer Is B
NEC Section 215.4(A) permits a common neutral to supply two sets of 5-wire feeders.
On a 4-wire, delta-connected secondary where the midpoint of one phase is grounded to supply lighting and
similar loads, what color must the conductor having the highest voltage be?
P 4
C10 Electrical 09/11/2026
Exam
CSLB C10 Test 1 | 120 Questions and Answers
() (Verified Answers) COMPLETE
FREQUENTLY MOST TESTED QUESTIONS WITH
COMPLETE SOLUTION /GET IT 100%
ACCURATE!(Graded A+)
The total equivalent bend in rigid conduit between pull points (outlet to outlet, fitting to fitting, or outlet to
fitting) shall not exceed _____.
A-3 quarter bends (270 degrees)
B-4 quarter bends (360 degrees)
C-5 quarter bends (450 degrees)
D-6 quarter bends (540 degrees) - Correct Answer :The Correct Answer Is B
Two 45 degrees bends plus three 90 degrees bends equals the maximum of 360 degrees total.
P 1
, • California CSLB
C10 Electrical 09/11/2026
Exam
When a branch circuit feeds both noncontiguous and continuous loads, the circuit must be sized to
accommodate 100 percent of the noncontiguous load plus what percent of the continuous load?
A-110 percent
B-115 percent
C-120 percent
D-125 percent - Correct Answer :The Correct Answer Is D
The rating of branch circuits serving continuous loads shall be not less than the noncontiguous load plus 125
percent of the continuous load.
The branch-circuit load for a single 12-kilowatt (12 kW) electric range in a dwelling is _____.
A-8 kW
B-9 kW
C-10 kW
D-11 kW - Correct Answer :The Correct Answer Is A
NEC Table 220.4(C) permits an electric range with a kW nameplate rating not exceeding 12 kW to be rated at
8kW when sizing branch circuits and feeders.
A 20-ampere laundry circuit is always required in each _____.
A-industrial wash room
B-commercial utility room
C-dwelling unit
D-motel unit - Correct Answer :The Correct Answer Is C
In dwelling units, at least one 20 amp branch circuit shall be installed for the laundry.
How many receptacles are required in a residential hallway 12 feet in length?
A-1
P 2
, • California CSLB
C10 Electrical 09/11/2026
Exam
B-2
C-3
D-4 - Correct Answer :The Correct Answer Is A
NEC Section 210.52(H) requires at least one receptacle outlet in hallways 10 feet or more in length.
How many receptacle outlets are required in a residential garage?
A-4
B-3
C-2
D-1 - Correct Answer :The Correct Answer Is D
At least one receptacle outlet to be installed in each basement and in each attached garage, or in each detached
garage with electric power.
A 125-volt single phase, 15- or 20-ampere receptacle must be installed in _____ for the servicing of heating, air
conditioning and refrigeration equipment?
A-all apartment buildings
B-one- and two-family dwellings
C-commercial buildings
D-all locations - Correct Answer :The Correct Answer Is D
Receptacle outlets are required for equipment in any location the equipment is present. The NEC has removed
the exception for equipment on rooftops of one- and two-family dwellings.
How many lighting outlets must be installed at or near heating, air-conditioning, and refrigeration equipment in
attics or crawl spaces?
A-1
B-2
C-3
P 3
, • California CSLB
C10 Electrical 09/11/2026
Exam
D-4 - Correct Answer :The Correct Answer Is A
NEC Sections 210.70(A) and(C) require at least one switched lighting outlet in these spaces.
Feeders containing a common neutral are permitted to supply how many sets of 3-wire feeders?
A-1 or 2
B-5 or 6
C-3 or 4
D-2 or 3 - Correct Answer :The Correct Answer Is D
NEC Section 215.4(A) permits two or three sets of 3-wire feeders.
Feeders containing a common neutral are permitted to supply how many sets of 4-wire feeders?
A-2
B-3
C-4
D-5 - Correct Answer :The Correct Answer Is A
NEC Section 215.4(A) permits two sets of 4-wire feeders.
Feeders containing a common neutral are permitted to supply how many sets of 5-wire feeders?
A-1
B-2
C-3
D-4 - Correct Answer :The Correct Answer Is B
NEC Section 215.4(A) permits a common neutral to supply two sets of 5-wire feeders.
On a 4-wire, delta-connected secondary where the midpoint of one phase is grounded to supply lighting and
similar loads, what color must the conductor having the highest voltage be?
P 4
