'Low voltage wiring' means?

• A. High voltage wiring
• B. None of the above (low power levels)
• C. Medium voltage wiring
• D. Low resistance conductors

Answer: (B)

Low voltage wiring refers to circuits designed for signaling and control rather than for delivering heavy electrical power. These circuits carry low power levels, typically at voltages like 12, 24, or 48 volts, and are used for sensors, control panels, door contacts, and alarms. It’s not about high voltage power distribution, nor is it defined by having low conductor resistance—the key idea is the low energy, low-power nature of the signals being carried. In burglar and residential fire alarm work, this distinction matters because low voltage wiring is designed to handle small currents safely and efficiently for monitoring and control functions.