PoE Switch Power Budget & Bandwidth Calculator for IP CCTV
Table of Contents
Avoiding PoE Switch Overload in IP CCTV Projects
Connecting multiple 4K PTZ cameras with infrared illuminators and heaters to a PoE switch without calculating total wattage budgets leads to random camera reboots, video drops, and switch overheating.
Calculating PoE Standards and Wattage Requirements
Understand PoE power standards: IEEE 802.3af (PoE - 15.4W), IEEE 802.3at (PoE+ - 30W for IR bullet cameras), and IEEE 802.3bt (PoE++ - 60W/90W for heavy PTZ speed domes). Always maintain a 20% power headroom buffer.
Network Bandwidth and Storage Calculation Formula
Calculate network bandwidth requirements based on camera resolution, frame rate (FPS), and video compression codecs (H.264 vs H.265+), designing dedicated V-LANs to isolate CCTV traffic from corporate data.