NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

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A balanced microphone line using a 3-pin XLR is preferred over an unbalanced RCA line on long runs because the balanced circuit:

Rejects induced noise by sending equal-and-opposite signals that cancel at a differential input Carries twice the phantom voltage on the shield May be installed in the same raceway as 480-volt feeders without 725.136 precautions Does not require a listed cable type

Correct Answer:

Rejects induced noise by sending equal-and-opposite signals that cancel at a differential input

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