Electrical systems running at 50 volts or less, used for things like data cables, door bells, and security cameras.
Electrical systems operating at 50 volts or less, commonly used for data, communications, fire alarm, security, lighting controls, and audiovisual systems. Low-voltage wiring is typically installed by specialty contractors and governed by NEC Article 725 and related articles. These systems require less stringent conduit and wiring methods than line-voltage systems.
All low-voltage wiring for the building automation system was run in dedicated cable trays separate from line-voltage circuits.
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