• California CSLB
C10 Electrical 09/11/2026
Exam
CSLB C10 Test 3 | 120 Questions and Answers
() (Verified Answers) COMPLETE
FREQUENTLY MOST TESTED QUESTIONS WITH
COMPLETE SOLUTION /GET IT 100%
ACCURATE!(Graded A+)
What must be provided for in all working spaces above service equipment?
A
A water faucet to flush operatoru2019s eyes
B
A drinking fountain
C
Illumination
P 1
, • California CSLB
C10 Electrical 09/11/2026
Exam
D
A wash basin –
Correct Answer :The Correct Answer Is C
A light fixture must be installed for the working spaces about any switchboards, panelboards, etc. so adequate
illumination (light) will be available for operation or repairs. NEC Section 110.26 (D).
Parts of electric equipment which in ordinary operation produce arcs, sparks, flames, or molten metal shall be
enclosed or separated and isolated from:
A
All other electrical equipment
B
All combustible material
C
Electric lighting
D
All working spaces - Correct Answer :The Correct Answer Is B
NEC Section 110.18. (Special rules apply for motors and hazardous locations.)
Working space in rooms containing electrical equipment shall not be used for:
A
Storage
B
Maintenance and repair of equipment
C
Testing purposes
D
P 2
, • California CSLB
C10 Electrical 09/11/2026
Exam
Inspection or servicing - Correct Answer :The Correct Answer Is A
The area around electrical equipment must be kept clear of foreign matter so that maintenance and repairs may
be readily made. NEC Section 110.26 (B).
In all cases where there are live parts normally exposed on the front of switchboards or motor control centers,
the working space in front of such equipment shall not be less than:
A
1 foot
B
3 feet
C
4 feet unless adequate protection is provided
D
18 inches - Correct Answer :The Correct Answer Is B
Three feet is judged by the NEC to be adequate space (600 volts or under) so that workers may keep a safe
distance from live electrical parts. NEC Section 110.26(A) and NEC Table 110.26(A)(1).
Ampacity is defined as:
A
The electromotive force required to cause electrons to flow in conductors
B
The amount of power in a circuit
C
The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding
its temperature rating
D
The voltage rating of any appliance - Correct Answer :The Correct Answer Is C
P 3
, • California CSLB
C10 Electrical 09/11/2026
Exam
NEC Article 100 - Definitions.
Approved as used in the NEC means:
A
Acceptable to the authority having jurisdiction
B
Acceptable only when specified in local ordinances
C
Okay for use in hazardous locations
D
Usable only for inside work - Correct Answer :The Correct Answer Is A
In most cases, the local city, county, or state electrical inspector is the authority having jurisdiction. NEC Article
100 - Definitions.
A bare conductor is one with:
A
Several layers of thermoplastic insulation
B
Only one layer of insulation
C
A covering that is not recognized by the NEC as electrical insulation
D
No covering or insulation whatsoever - Correct Answer :The Correct Answer Is D
A bare conductor, such as a service grounding wire, has no cover or insulation. NEC Article 100 - Definitions,
Conductor, Bare.
Which of the following anchors may not be used to secure electrical equipment to masonry walls?
P 4
C10 Electrical 09/11/2026
Exam
CSLB C10 Test 3 | 120 Questions and Answers
() (Verified Answers) COMPLETE
FREQUENTLY MOST TESTED QUESTIONS WITH
COMPLETE SOLUTION /GET IT 100%
ACCURATE!(Graded A+)
What must be provided for in all working spaces above service equipment?
A
A water faucet to flush operatoru2019s eyes
B
A drinking fountain
C
Illumination
P 1
, • California CSLB
C10 Electrical 09/11/2026
Exam
D
A wash basin –
Correct Answer :The Correct Answer Is C
A light fixture must be installed for the working spaces about any switchboards, panelboards, etc. so adequate
illumination (light) will be available for operation or repairs. NEC Section 110.26 (D).
Parts of electric equipment which in ordinary operation produce arcs, sparks, flames, or molten metal shall be
enclosed or separated and isolated from:
A
All other electrical equipment
B
All combustible material
C
Electric lighting
D
All working spaces - Correct Answer :The Correct Answer Is B
NEC Section 110.18. (Special rules apply for motors and hazardous locations.)
Working space in rooms containing electrical equipment shall not be used for:
A
Storage
B
Maintenance and repair of equipment
C
Testing purposes
D
P 2
, • California CSLB
C10 Electrical 09/11/2026
Exam
Inspection or servicing - Correct Answer :The Correct Answer Is A
The area around electrical equipment must be kept clear of foreign matter so that maintenance and repairs may
be readily made. NEC Section 110.26 (B).
In all cases where there are live parts normally exposed on the front of switchboards or motor control centers,
the working space in front of such equipment shall not be less than:
A
1 foot
B
3 feet
C
4 feet unless adequate protection is provided
D
18 inches - Correct Answer :The Correct Answer Is B
Three feet is judged by the NEC to be adequate space (600 volts or under) so that workers may keep a safe
distance from live electrical parts. NEC Section 110.26(A) and NEC Table 110.26(A)(1).
Ampacity is defined as:
A
The electromotive force required to cause electrons to flow in conductors
B
The amount of power in a circuit
C
The current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding
its temperature rating
D
The voltage rating of any appliance - Correct Answer :The Correct Answer Is C
P 3
, • California CSLB
C10 Electrical 09/11/2026
Exam
NEC Article 100 - Definitions.
Approved as used in the NEC means:
A
Acceptable to the authority having jurisdiction
B
Acceptable only when specified in local ordinances
C
Okay for use in hazardous locations
D
Usable only for inside work - Correct Answer :The Correct Answer Is A
In most cases, the local city, county, or state electrical inspector is the authority having jurisdiction. NEC Article
100 - Definitions.
A bare conductor is one with:
A
Several layers of thermoplastic insulation
B
Only one layer of insulation
C
A covering that is not recognized by the NEC as electrical insulation
D
No covering or insulation whatsoever - Correct Answer :The Correct Answer Is D
A bare conductor, such as a service grounding wire, has no cover or insulation. NEC Article 100 - Definitions,
Conductor, Bare.
Which of the following anchors may not be used to secure electrical equipment to masonry walls?
P 4
