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SC Fire Alarm Practice Questions - South Carolina Fire Alarm Contractor Examination Exam

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A NAC must keep at least 16.0 V at the last device from a 24.0 V source. The alarm current is 0.50 A and the one-way conductor length is 1,000 feet. Using R_loop = 2 x (ohms per 1,000 ft) x (thousands of feet one way), what is the maximum conductor resistance that still meets 16.0 V?
Correct Answer:
8.0 ohms per 1,000 feet

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