Wire Color Code Chart
Wire & Cable Colour Code Reference
Color code reference chart for electrical wires and cables. Three standards — IEC 60446, BS 7671:2018, BNBC 2020 — are compared together. You can see old (pre-2004) and new color codes side by side.
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Excel
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How to Use
Follow these simple steps to get started
Open the Excel file
Go to the Single Phase or Three Phase sheet
Check the conductor type — color is shown next to it
View old vs new color comparison
Print and keep at the workplace
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Who Needs This
Frequently Asked Questions
IEC 60446 is followed in Bangladesh — mandatory from BNBC 2020.
Pre-2004: Phase=Red/Yellow/Blue, Neutral=Black. New: Phase=Brown/Black/Grey, Neutral=Blue.
Green-Yellow (same in both standards) — always green-yellow striped.
Yes, control wiring typically uses black/white. Standards vary.
Outer sheath color can be different — inner conductor color follows the standard.
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