Question 1
A balanced 208-volt, three-phase lighting panel on a Charleston commercial job draws 48 amperes at a lagging power factor of 0.82. Using √3 = 1.732, what is the real power of this load?
Correct Answer:
14.2 kW
Question 2
A 120-volt, single-phase, 2-wire branch circuit supplies an 18-ampere load. The one-way conductor length is 85 feet of 12 AWG copper (K = 12.9, area = 6,530 CM). What is the calculated voltage drop?
Correct Answer:
6.05 volts
Question 3
A purely resistive 240-volt strip heater installed in a Columbia shop has a measured resistance of 20 ohms. What current does the heater draw, and what is its power?
Correct Answer:
12 A and 2,880 W
Question 4
A single-phase dry-type transformer serving a Greenville tenant space has a 480-volt primary and a 208-volt secondary. If the primary current is 45 amperes, what is the secondary current? Ignore losses.
Correct Answer:
104 A
Question 5
What is the peak (zero-to-peak) value of a 208-volt RMS sinusoidal line-to-line voltage? Use √2 = 1.414.
Correct Answer:
294 V
Question 1 of 100
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Prepare with the SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam practice quiz. This question bank includes 100 questions covering copper, conductors, table, volt, and conductor. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on copper, conductors, table, volt, and conductor. 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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