CSLB C10 Test 1 Questions and Answers (2025 / 2026) (Verified Answers) COMPLETE FREQUENTLY MOST TESTED QUESTIONS WITH COMPLETE SOLUTION /GET IT 100% ACCURATE!(Graded A+)

CSLB C10 Test
Questions and Answers
Updated Latest (Verified Answers)

1. What is the minimum working clearance from an electrical panel under 600 V
g g g g g g g g g g g g




?

ANSWER 36" g




2. Voltage drop in wire is a function of
g g g g g g g




ANSWER Wire gauge, Length of wire, Current flow in the wire
g g g g g g g g g g




3. A 12-volt direct current, 13-
g g g g




watt fluorescent light is controlled by a photocell. The average daily on-
g g g g g g g g g g g




time is 12 hours per day. How many watt-
g g g g g g g g




hours are consumed by the light on an average day?
g g g g g g g g g




ANSWER 156 g




4. Where may you use nonmetallic-sheathed cable?
g g g g g




ANSWER inside floors and walls g g g g




5. What is the maximum permitted distance between convenience outlets in k
g g g g g g g g g g




itchens?

ANSWER 12' g




6. The minimum permitted size fixture wire is
g g g g g g



1g/g2
0

, ANSWER No. 18 g g




7. What is an Erickson coupling used for?
g g g g g g




ANSWER to connect two sections of rigid conduit when one section cannot be turned
g g g g g g g g g g g g g




8. The smallest size grounding conductor permitted for service entrance is
g g g g g g g g g




ANSWER - g




No. 8 copper
g g




9. For an electric appliance with a 17.5 A load, the overcurrent device must not e
g g g g g g g g g g g g g g




xceed

ANSWER 25 amps g g




10. A 5 kW appliance is used for 5 hours. At $0.014 per kWh, the cost of running th
g g g g g g g g g g g g g g g g g




e appliance is
g g




ANSWER $0.35 g




11. If the plumber accidentally cuts installed wires, to whom should you report t
g g g g g g g g g g g g




he problem?
g




ANSWER general contractor g g




12. What is the maximum distance to an outlet from any point along the wall b
g g g g g g g g g g g g g g




ehind a kitchen counter?
g g g




ANSWER 24" g




13. Which of the following materials is not corrosive?
g g g g g g g




2g/g2
0

, ANSWER enamel g




14. 65 street lights are fed by a 2275-
g g g g g g g




volt series circuit. What is the voltage across each light?
g g g g g g g g g




ANSWER 35 V g g




15. What do you not take into consideration when doing load demand calcu-
g g g g g g g g g g g




g lations?

ANSWER small portable heating and cooling appliances
g g g g g g




16. The symbol represents a
g g g




ANSWER relay coil g g




17. A fixture that weighs more than
g g g g g g




must be supported independently of an outlet box.
g g g g g g g




ANSWER 50 lb. g g




18. After installing a new A/C how would you test it?
g g g g g g g g g




ANSWER turn on the breaker and check voltage
g g g g g g g




3g/g2
0