Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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Four electricians are discussing voltage ratings of circuit breakers. Electrician A says that a circuit breaker marked 120/240 V is acceptable for a circuit that doesn't exceed 220 V between any two conductors. Electrician B says that a circuit breaker marked only 240 V wouldn't be acceptable for a circuit exceeding 220 V between any two conductors. Electrician C says that a circuit breaker marked 120/240 V is acceptable for a circuit that exceeds 220 V between any two conductors. Electrician D says the 120/240 V breaker would be acceptable for a circuit that doesn't exceed 240 V between any two conductors. Which electrician is correct?
A. Electrician D is correct.
B. Electrician A is correct.
C. Electrician B is correct.
D. Electrician C is correct.
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Answer: B.
Electrician A is correct
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