Article 725, Class 1 Circuits

Article 725, Class 1 Circuits

The usage and power limitations of Class 1 circuits differentiate them from electrical power circuits

Circuits that fall under the requirements of Art. 725 are remote-control, signaling, and power-limited circuits that aren’t an integral part of a device or appliance. Article 725 includes circuits for burglar alarms, access control, sound, nurse call, intercoms, some computer networks, some lighting dimmer controls, and some low-voltage industrial controls.

NEC - Code Basics

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