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PoE Voltage Drop Calculator
Max distance, voltage drop, and heat limits for Cat5e, Cat6, and PoE cable runs.
Quick Answer
PoE devices require a minimum voltage to operate. Long cable runs cause voltage drop, potentially failing to power the device. Use this tool to verify delivery.
Standard Compliance
TIA-568 standards limit channel length to 100 meters (328 ft). PoE voltage drop depends on cable resistance (AWG size) and device current draw.
Hint
Determine Cable Length and PoE Standard to see power delivery.
1Cable Configuration
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2Power Requirements
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Ethernet & PoE Status Compliance StatusMax cable length is 328ft (100m) for data compliance.
Compliance Status
Max cable length is 328ft (100m) for data compliance.
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