A passage reads: 'Overcurrent protection devices must be rated at least equal to the conductor's ampacity, but not more than the maximum rating permitted for the load.' A conductor has an ampacity of 30 A serving a load with a maximum permitted breaker of 20 A. What breaker size is correct?
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A
30 A, because the conductor's ampacity sets the minimum
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B
20 A, because the load's maximum permitted rating governs
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C
25 A, as a compromise between the two values
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D
40 A, to provide a safety margin above ampacity