Smart Cable Sizing Calculator

IFlexCable Technology Co., Ltd. specializes in the R&D, manufacturing and supply of power, control, flame retardant and photovoltaic cables for industrial, construction, grid and new energy customers.

IFlexCable Technology Co., Ltd.

Power cable, control cable, instrumentation cable, photovoltaic cable and custom industrial cable solutions.

Engineering Tool

Smart Cable Sizing Calculator

A practical engineering pre-selection tool for electrical engineers. It checks design current, corrected ampacity, voltage drop and optional short-circuit thermal withstand to recommend the minimum compliant cable size.

IEC-styleAmpacity, voltage drop, short-circuit check

Single moduleShortcode-ready for WordPress pages

Engineer-facingClear assumptions and calculation trace

Engineering note

This tool is intended for preliminary selection and technical communication. Final project design should still be verified against local code requirements and the manufacturer's official current-carrying capacity tables.

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Input Parameters

Circuit Inputs

Enter the load data and installation conditions. The calculator will recommend the minimum cable size that satisfies all enabled checks.

Load data

System Type Input Mode Rated Voltage (V) Load Power (kW) Load Current (A) Power Factor Equipment Efficiency Circuit Type

Cable and installation

Conductor Material Insulation Type Installation Method Loaded Conductors One-way Length (m) Ambient Temperature (°C) Circuits Grouped Together Max Voltage Drop (%)

Short-circuit thermal withstand

Enable the adiabatic short-circuit check based on S ≥ I × √t / k.

Prospective Fault Current (kA) Clearing Time (s)

Result

Recommended Cable Size

All results below are displayed in English for direct use on the front end.

Comparison

Candidate Sizes

Compare the candidate sizes to understand why the final recommendation is selected.

Calculation Trace

Engineering Basis

The tool shows the simplified assumptions used for pre-selection.