Engineering Resources

Cable Selection Tools

Professional engineering calculators and reference charts for cable sizing, voltage drop analysis, ampacity verification, and international standard cross-referencing. Built for engineers, procurement managers, and EPC contractors.

Essential Tools Core selection calculators required for most cable projects

Cable Sizing Calculator

Determine the correct cable cross-section based on load current, installation method, ambient temperature, and derating factors per IEC 60364 and GB 50217.

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IEC 60364 · GB 50217 · Derating Factors

Wire Gauge (AWG/mm²) Chart

Complete cross-reference table converting AWG, kcmil, mm², and metric sizes with corresponding resistance, ampacity, and diameter values for Cu and Al conductors.

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AWG → mm² · Cu / Al · Resistance Table

Voltage Drop Calculator

Calculate voltage drop percentage for single-phase and three-phase circuits. Verify compliance with IEC and NEC limits for LV distribution and motor feeder circuits.

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Single / Three Phase · IEC / NEC · % Drop

Reference Tools Standard reference tables and cross-reference databases

Ampacity Tables

Current-carrying capacity tables for XLPE, PVC, and rubber-insulated cables across all installation methods -- direct burial, conduit, tray, and free air per IEC 60364-5-52.

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XLPE / PVC · IEC 60364-5-52 · All Methods

Color Code Charts

Conductor color coding reference for IEC 60446, NEC, AS/NZS, and Chinese GB standards. Covers phase, neutral, and protective earth identification across regions.

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IEC 60446 · NEC / AS/NZS · GB Standard

Cross-Reference Tool

Look up equivalent cable designations across IEC, GB, BS, VDE, NFC, and UL standards. Find the Chinese GB equivalent for any international cable type code.

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IEC / GB / BS · VDE / NFC · UL

Advanced Tools Supplementary calculators for installation and logistics planning

Weight Calculator

Estimate cable reel weight and total shipping weight based on cable type, cross-section, number of cores, and drum length. Useful for logistics and crane load planning.

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kg/km · Reel Weight · Logistics

Conduit Fill Calculator

Calculate the fill percentage for cables inside conduit or trunking. Verify compliance with NEC Chapter 9 and IEC installation rules for maximum conduit utilization.

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Fill % · NEC Ch.9 · IEC Rules

Need Custom Support?

Can't find the calculation you need?

Our technical engineers can assist with custom cable sizing, project-specific derating, and full cable schedule preparation for EPC and utility projects.

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Always Up to Date

All calculators reference current IEC, GB, NEC, and BS standard editions. Updated when standards revise.

Engineering Verified

Calculation methods reviewed by Jinda's R&D and technical engineering team with 38+ years of industry experience.

Export Results

Save and export calculation results as PDF for inclusion in project documentation, BOQ submissions, and technical proposals.