Network & Power

PoE budget

Switch budget vs device load — does your PoE switch carry the install?

List the PoE devices on each switch (cameras, APs, phones, lighting nodes, etc.), enter the per-device wattage and count, see total load vs the switch's PoE budget. Tells you if you need to step up to PoE+ / PoE++, split the load across switches, or add a midspan injector.

devices

device

count

watts

Per-port class limit

Switch total PoE budgetW

From the switch datasheet — typically labeled 'Total PoE Power' or 'PoE Budget'.

Total load

32.0W

2 ports used · 9% of switch budget

Headroom remaining

338.0W

Comfortable.

any device drawing > 30 W needs a higher PoE class
budget headroom of 10-15% recommended for inrush + cable loss
long cat runs lose ~5 W over 100 m — derate accordingly

switch + drops

Each cable run feeds one device row. The bar shows total load vs the switch's PoE budget.

Need this math wired into a real system? We do that for a living.

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