CALIFORNIA CSLB C-10 ELECTRICAL CONTRACTOR EXAM 2026 –
VERIFIED QUESTIONS AND ANSWERS PRACTICE EXAM MATERIAL
DESCRIPTION
This document contains verified practice questions and answers designed to help candidates
prepare for the California CSLB C-10 Electrical Contractor Exam. It covers key topics such as
electrical code requirements, grounding and bonding, service installation, wiring methods,
safety procedures, and electrical system calculations.
The material reflects the latest exam update for 2026 and includes sample questions similar to
those used in the official trade exam to support effective study and exam preparation.
ANSWER FORMAT
The document Contains Questons with Correct and Verified Answers
Min #receptacles in a garage
1
Mobile home service equipment shall be line of sight and no more than ____ from
the exterior wall of the home
30'
If a service conductor is over 300V but less than 600V, what is the minimum
clearance of that service conductor if it runs in residential and commercial areas
that are not subject to traffic?
15'
A power meter must be a minimum of ____ feet away from any door, gas meter, or
window opening.
3
A rod-type grounding electrode should have a minimum diameter of
5/8"
Conductors entering buildings shall be protected:
To the point of entrance
A grounding electrode must be in contact with soil a minimum:
8'
If a raceway has various conductors coming from different systems, then you
should group each system separately every:
6'
What is the maximum distance a service conductor can run over a roof?
6'
Soldered connections are not permitted for
VERIFIED QUESTIONS AND ANSWERS PRACTICE EXAM MATERIAL
DESCRIPTION
This document contains verified practice questions and answers designed to help candidates
prepare for the California CSLB C-10 Electrical Contractor Exam. It covers key topics such as
electrical code requirements, grounding and bonding, service installation, wiring methods,
safety procedures, and electrical system calculations.
The material reflects the latest exam update for 2026 and includes sample questions similar to
those used in the official trade exam to support effective study and exam preparation.
ANSWER FORMAT
The document Contains Questons with Correct and Verified Answers
Min #receptacles in a garage
1
Mobile home service equipment shall be line of sight and no more than ____ from
the exterior wall of the home
30'
If a service conductor is over 300V but less than 600V, what is the minimum
clearance of that service conductor if it runs in residential and commercial areas
that are not subject to traffic?
15'
A power meter must be a minimum of ____ feet away from any door, gas meter, or
window opening.
3
A rod-type grounding electrode should have a minimum diameter of
5/8"
Conductors entering buildings shall be protected:
To the point of entrance
A grounding electrode must be in contact with soil a minimum:
8'
If a raceway has various conductors coming from different systems, then you
should group each system separately every:
6'
What is the maximum distance a service conductor can run over a roof?
6'
Soldered connections are not permitted for
