⚡ Conduit Sizing Calculator

Calculate conduit sizes based on NEC requirements, wire types, and installation conditions. ⚠️ Disclaimer: For educational purposes. Always consult NEC codebook and licensed electrician.

🔌 Conductor Configuration

1 3 30

📐 Conduit Configuration

🌡️ Installation Conditions
100%
🚀 Common Scenarios

📊 Conduit Sizing Results

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Minimum Conduit
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Fill Percentage
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Total Area
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Conduit CSA

📝 Calculation Details

📚 NEC Code References

• NEC 300.17: Number of conductors in raceway
• NEC 310.15: Ampacity adjustments
• NEC 334.80: Conductor ampacity
• NEC 352.22: PVC conduit fill
• NEC 358.22: EMT conduit fill
• NEC Annex C: Conduit fill tables

📐 Standard Conduit Sizes

Trade Size ID (inches) Area (in²) Max Fill 40% Typical Use
1/2" 0.622 0.304 0.122 Residential circuits
3/4" 0.824 0.533 0.213 Small feeders
1" 1.049 0.864 0.346 Commercial circuits
1¼" 1.380 1.496 0.598 Large feeders
1½" 1.610 2.036 0.814 Service entrance
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IMPORTANT DISCLAIMER

This tool provides educational estimates only. Electrical work requires: • Compliance with NEC/BS/IEC codes • Local jurisdiction approvals • Licensed electrician installation • Manufacturer specifications • Site-specific conditions assessment