Low-Voltage Wiring

Low-voltage wiring covers the systems that run below 50 volts - data, voice, video, security, access control, and automation. It is a specialty distinct from electrical work, with its own standards, cable ratings, and (in California) its own contractor license.

What counts as low-voltage

• Network and telephone cabling (Cat6/Cat6a)
• Security cameras, alarms, and access control
• Audio/video and intercom systems
• Wi-Fi access points and PoE devices
• Smart-building sensors and controls

Why it is a specialty

Low-voltage work follows ANSI/TIA standards and code rules for cable ratings - get the wrong jacket and you fail inspection. Our guide to plenum vs riser cable ratings explains where each is required, and what structured cabling is covers the broader system.

Hiring the right pro

In California, this work is performed under a C-7 license. Always hire a licensed low-voltage contractor who is bonded and insured - our 12 questions to ask guide helps you vet candidates in Los Angeles.