⚡ Engineering Tool

Ampacity Calculator

Calculate the maximum permissible current (ampacity) for a cable under specific installation conditions. Applies IEC 60364-5-52 derating factors for temperature, grouping, and installation method.

📐 Standard: IEC 60364-5-52 🌡️ Insulation: XLPE (90°C) / PVC (70°C) ⚙️ Conductor: Cu / Al

📥

Input Parameters

Cable Cross-Section mm²

Conductor Material

Insulation Type

Installation Method

Ambient Temperature °C

Air: 30°C default; Ground: 20°C default

Number of Circuits (Grouping)

Actual Load Current (optional) A

Enter to check utilization rate

📊

Calculation Results

🌡️

Enter parameters above and click Calculate

📋

Derating Factors Breakdown

Run calculation to see derating breakdown

ℹ️

Assumptions & Notes

Input Summary

Cable Size—

Conductor—

Insulation—

Install Method—

Ambient Temp—

Grouping—

Engineering Notes

⚠️ Base ampacity values from IEC 60364-5-52 Table B.52.3 (XLPE) and B.52.2 (PVC), Method C, single circuit.

📌 For buried cables, soil thermal resistivity of 2.5 K·m/W is assumed. Actual values may vary by soil type and moisture content.

Related Calculators

→ Cable Sizing Calculator → Short Circuit Calculator