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PoE Power Budget Calculator

Size PoE switches for cameras, PTZs, access control and intercoms. Calculates total load, cable losses, reserve margin and how many switches you need.

Device draw uses typical sustained load capped at the class limit. A PTZ at full pan, tilt, heater and IR draws far more than idle, so confirm worst-case figures from the datasheet.

Results

Switches Required

2 x 24 ports

Driven by port count

Total Device Draw

344 W

Total Switch Load

377 W

Load with Reserve

452 W

PoE Ports Required

28

Budget Utilisation

51%

Budget Status

PASS - Comfortable headroom

Power Budget vs Capacity

Power Budget vs CapacityTotal Switch Load 377 W, Available Budget 740 WSwitch Load377 WLoad with Reserve452 WAvailable Budget740 W

Load by Device Type

Load by Device TypeFixed Cameras 210 W, PTZ Cameras 167 WFixed Cameras24 x 8.0 = 210 WPTZ Cameras4 x 38.0 = 167 W