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CALFORNIA C10 ELECTRICAL
EXAM QUESTIONS & VERIFIED
ANSWERS 2025
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.
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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'
If a conductor is 600V or less, what is the minimum height of a service conductor
that runs above grade but in areas that are only accessible to pedestrian traffic? -
correct-answer-10'
What is the minimum size copper equipment grounding conductor for a 1600
ampere overcurrent device? -correct-answer-4/0
CALFORNIA C10 ELECTRICAL
EXAM QUESTIONS & VERIFIED
ANSWERS 2025
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.
, 2|Page
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'
If a conductor is 600V or less, what is the minimum height of a service conductor
that runs above grade but in areas that are only accessible to pedestrian traffic? -
correct-answer-10'
What is the minimum size copper equipment grounding conductor for a 1600
ampere overcurrent device? -correct-answer-4/0
