SIAMESE COAXIAL CABLE

This image shows a RG59 Siamese Coaxial Cable, which is the industry standard for wiring analog CCTV surveillance systems. It is called "Siamese" because it combines two different types of wires into one jacket, allowing you to run both video and power to a camera using a single cable.
​Cable Breakdown
​The cable consists of two main parts:
​RG59 Coaxial Section (Video):
​Center Conductor: Carries the video signal.
​Dielectric Insulator: A layer that maintains the spacing between the core and the shield.
​Braided Shield: Protects the video signal from electromagnetic interference (EMI).
​Two-Wire Power Section (Power):
​Red Wire: Positive (+) power (usually 12V DC or 24V AC).
​Black Wire: Negative (-) or ground