Calfornia C10 Electrical Exam
questions with correct answers
Min #receptacles in a garage - correct answer ✔✔ 1
Mobile home service equipment shall be line of sight and no more than ____ from the exterior
wall of the home - correct answer ✔✔ 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? -
correct answer ✔✔ 15'
A power meter must be a minimum of ____ feet away from any door, gas meter, or window
opening. - correct answer ✔✔ 3
A rod-type grounding electrode should have a minimum diameter of - correct answer ✔✔ 5/8"
Conductors entering buildings shall be protected: - correct answer ✔✔ To the point of entrance
A grounding electrode must be in contact with soil a minimum: - correct answer ✔✔ 8'
If a raceway has various conductors coming from different systems, then you should group each
system separately every: - correct answer ✔✔ 6'
What is the maximum distance a service conductor can run over a roof? - correct answer ✔✔ 6'
, Soldered connections are not permitted for - correct answer ✔✔ Grounded connections
Refer to diagram. If you have 0 to 150 nominal voltage to ground, then what is the minimum
clear distance required from such equipment? - correct answer ✔✔ 3'
What color marking is required for conductors or busbars that carry the higher voltage to
ground and these marking are required at connection points that have a grounded conductor
present? - correct answer ✔✔ Orange
What is the purpose of a BOS? - correct answer ✔✔ Integrates PV into the building's load
Cable trays or similar raceways carrying service entrance conductors must: - correct answer ✔✔
Be Labled
Which of the following bulbs cannot be used with dimmer switches? - correct answer ✔✔ All of
the listed bulb types can be used with dimmers provided the dimmer is designed, tested and UL
listed for the specific lighting source or load type.
What is the most common location for trim in electrical equipment? - correct answer ✔✔
Panelboards
What is the most common location for terminal lugs? - correct answer ✔✔ Batteries in PV
system
What is the minimum length of a concrete-encased grounding electrode? - correct answer ✔✔
20'
If a conductor is 600V or less, what is the minimum height of a service conductor that runs over
public roads, alleys, and parking areas subject to traffic? - correct answer ✔✔ 18'
questions with correct answers
Min #receptacles in a garage - correct answer ✔✔ 1
Mobile home service equipment shall be line of sight and no more than ____ from the exterior
wall of the home - correct answer ✔✔ 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? -
correct answer ✔✔ 15'
A power meter must be a minimum of ____ feet away from any door, gas meter, or window
opening. - correct answer ✔✔ 3
A rod-type grounding electrode should have a minimum diameter of - correct answer ✔✔ 5/8"
Conductors entering buildings shall be protected: - correct answer ✔✔ To the point of entrance
A grounding electrode must be in contact with soil a minimum: - correct answer ✔✔ 8'
If a raceway has various conductors coming from different systems, then you should group each
system separately every: - correct answer ✔✔ 6'
What is the maximum distance a service conductor can run over a roof? - correct answer ✔✔ 6'
, Soldered connections are not permitted for - correct answer ✔✔ Grounded connections
Refer to diagram. If you have 0 to 150 nominal voltage to ground, then what is the minimum
clear distance required from such equipment? - correct answer ✔✔ 3'
What color marking is required for conductors or busbars that carry the higher voltage to
ground and these marking are required at connection points that have a grounded conductor
present? - correct answer ✔✔ Orange
What is the purpose of a BOS? - correct answer ✔✔ Integrates PV into the building's load
Cable trays or similar raceways carrying service entrance conductors must: - correct answer ✔✔
Be Labled
Which of the following bulbs cannot be used with dimmer switches? - correct answer ✔✔ All of
the listed bulb types can be used with dimmers provided the dimmer is designed, tested and UL
listed for the specific lighting source or load type.
What is the most common location for trim in electrical equipment? - correct answer ✔✔
Panelboards
What is the most common location for terminal lugs? - correct answer ✔✔ Batteries in PV
system
What is the minimum length of a concrete-encased grounding electrode? - correct answer ✔✔
20'
If a conductor is 600V or less, what is the minimum height of a service conductor that runs over
public roads, alleys, and parking areas subject to traffic? - correct answer ✔✔ 18'
