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Wire Sizing
Articles about wire sizing.
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Wire Sizing 18 min May 5, 2026
Continuous Load Voltage Drop: 125% Current, Wire Size, and NEC/IEC Design
Size continuous-load circuits with 125% current, NEC 210.20, NEC 215.3, NEC 625, IEC 60364, and practical voltage-drop examples.
Continuous LoadVoltage DropNEC 210.20IEC 60364
Hommer Zhao
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Wire Sizing 18 min April 30, 2026
Voltage Drop vs Ampacity: When Wire Size Must Increase Beyond Code Minimum
Learn why a conductor can be legal by ampacity but still too small for a long run, with NEC/IEC references and practical wire-sizing examples.
Voltage DropAmpacityWire SizingNEC 310.16
Hommer Zhao
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