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Question 1
A 2,400 sq ft single-family dwelling unit requires a standard service load calculation per CEC Article 220. The general lighting (3 VA/sq ft), two small appliance circuits (1,500 VA each), and one laundry circuit (1,500 VA) total 11,700 VA before demand factors. What is the net calculated demand load for these combined general lighting and appliance loads after applying CEC Table 220.42 demand factors?
Correct Answer:
6,045 VA
Question 2
A single-phase 240V branch circuit supplies a 20A continuous load across a one-way length of 150 feet using 10 AWG solid copper conductors (K = 12.9, circular mil area = 10,380 CM). What is the estimated line-to-line voltage drop for this run?
Correct Answer:
7.46 volts
Question 3
A balanced 480V three-phase commercial feeder supplies a 100A continuous load over a distance of 300 feet using 1/0 AWG THHN copper conductors (K = 12.9, circular mil area = 105,600 CM). What is the approximate percentage voltage drop for this feeder?
Correct Answer:
1.32 percent
Question 4
An electrical contractor is calculating the main feeder demand load for a multi-family building with four 12 kW household electric ranges. According to CEC Table 220.55 Column C, what is the total maximum demand load for these four ranges?
Correct Answer:
17 kW demand
Question 5
When calculating feeder and service loads for commercial kitchen equipment under CEC Table 220.56, what demand factor applies to a facility equipped with six (6) thermostatically controlled commercial electric kitchen appliances?
Correct Answer:
65 percent
Question 1
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About this Exam

Prepare with the CSLB C-10 Electrical Practice Questions - California CSLB C-10 Electrical Examination Exam practice quiz. This question bank includes 100 questions covering conductors, maximum, installed, minimum, and table. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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CSLB C-10 Electrical Practice Questions - California CSLB C-10 Electrical Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on conductors, maximum, installed, minimum, and table. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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