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

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A 12-volt DC power run is 80 feet one-way to a 0.40-ampere load. Using copper K = 12.9 and 22 AWG (640 circular mils), what is the approximate voltage drop?

0.32 volt 0.64 volt 1.29 volts 2.58 volts

Correct Answer:

1.29 volts

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