CCTV Power and Cabling Infrastructure Flashcards

What is the purpose of a surge protector on a CCTV camera's power and video lines?

Answer: To protect equipment from voltage spikes caused by lightning or power surges

Surge protectors clamp transient voltage spikes caused by lightning strikes or switching events, protecting cameras and recording equipment from damage.

In CCTV power distribution, what does a 'multi-camera power supply' typically provide?

Answer: Multiple individually fused outputs supplying power to several cameras from one unit

Multi-camera power supplies have multiple individually fused output channels, allowing one centralized unit to safely power many cameras simultaneously.

Which cable type is preferred for outdoor CCTV runs exposed to UV light and weather?

Answer: Direct-burial or UV-resistant outdoor-rated cable

Outdoor-rated cables have UV-resistant jackets, moisture-resistant insulation, and sometimes armoring to withstand environmental exposure over extended periods.

What is the main risk of running low-voltage CCTV cables parallel and in close proximity to high-voltage AC power cables?

Answer: Electromagnetic interference (EMI) induction causing video noise

AC power cables generate electromagnetic fields that can induce noise into nearby low-voltage CCTV signal cables, degrading video quality.

What is 'OSHA lockout/tagout' relevant to in CCTV installation work?

Answer: Safely de-energizing electrical circuits before installation or maintenance work

OSHA's lockout/tagout procedures require workers to de-energize and lock out electrical circuits before performing installation or maintenance to prevent electrocution.

What does 'cable dressing' refer to in a professional CCTV installation?

Answer: Neatly organizing, bundling, and securing cables for a professional and maintainable finish

Cable dressing involves neatly routing, bundling, labeling, and securing cables using ties, clips, or trays to create an organized, professional, and maintainable installation.