PoE calculator

Budget switch power against device draw, accounting for cable loss between PSE and PD.

Switch

PoE budget (W)From the switch datasheet — PSE watts.
Cable run (m)Worst-case loss at 100m is ~16%, which is where the standards' PSE/PD gap comes from.

Devices

Ports42
Device draw612.0WAt the PD
Switch load700.1WAt the PSE, incl. cable loss
Headroom39.9W95% used
  • Above 85% of budget — leaves no room for a device swap or a redundant supply failing over.

Breakdown

DeviceCountPD wattsPSE wattsStandard
Wi-Fi 6 APs12306.0350.1802.3at (PoE+, Type 2)
IP phones24156.0178.5802.3af (PoE, Type 1)
PTZ cameras6150.0171.6802.3at (PoE+, Type 2)