- | Page
California CSLB C10 Electrical Exam | Questions with 100% Correct Answers | Verified | Latest Update
Question 1: Min #receptacles in a garage
Correct answer: 1
Question 2: Mobile home service equipment shall be line of
sight and no more than ____ from the exterior wall of the home
Correct answer: 30'
Question 3: 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'
Question 4: A power meter must be a minimum of ____ feet
away from any door, gas meter, or window opening
Correct answer: 3
Question 5: A rod-type grounding electrode should have a
minimum diameter of
- | Page
Correct answer: 5/8"
Question 6: Conductors entering buildings shall be protected:
Correct answer: To the point of entrance
Question 7: A grounding electrode must be in contact with soil a
minimum:
Correct answer: 8'
Question 8: If a raceway has various conductors coming from
different systems, then you should group each system separately
every:
Correct answer: 6'
Question 9: What is the maximum distance a service conductor
can run over a roof?
Correct answer: 6'
Question 10: Soldered connections are not permitted for
Correct answer: Grounded connections
- | Page
Question 11: 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'
Question 12: 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
Question 13: What is the purpose of a BOS?
Correct answer: Integrates PV into the building's load
Question 14: Cable trays or similar raceways carrying service
entrance conductors must:
Correct answer: Be Labled
Question 15: Which of the following bulbs cannot be used with
dimmer switches?
- | Page
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
Question 16: What is the most common location for trim in
electrical equipment?
Correct answer: Panelboards
Question 17: What is the most common location for terminal
lugs?
Correct answer: Batteries in PV system
Question 18: What is the minimum length of a concrete-encased
grounding electrode?
Correct answer: 20'
Question 19: 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?