Wire Insulation Color Code Page

Determine the application and select the correct catagory below. This will take you to the correct color code chart for your application.

Select here for 120/240 VAC Power Wiring (and certain 4KV Power Wiring) Applications
Select here for 277/480 Power Wiring Applications
Select here for Stereo Audio Applications
Select here for AF (Audio Frequency) Transformer Applications
Select here for IF (Intermediate Frequency) Transformer Applications
Select here for Electronic Equipment Applications
Notes:

**Chart of Standard Wiring Colors For Power Wiring Applications For 120/240 VAC circuits.**
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Wire Color	Circuit Type
Black	Phase 1
Red	Phase 2
Blue	Phase 3
White	Neutral
Green	Ground

**Chart of Standard Wiring Colors For Power Wiring Applications For 277/480 VAC circuits.**
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Wire Color	Circuit Type
Brown	Phase 1
Orange	Phase 2
Yellow	Phase 3
Grey	Neutral
Green w/ yellow stripe	Ground

**Chart of Standard Wiring Colors For Stereo Audio Applications.**
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Wire Color	Circuit Type
White	Left Channel High Side
Blue	Left Channed Low Side
Red	Right Channel High Side
Green	Right Channel Low Side

**Chart of Standard Wiring Colors For AF (Audio Frequency) Transformer Applications.**
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Wire Color	Circuit Type
Black	Ground
Blue	End Primary Loop (Collector)
Brown	Start Primary Loop
Green	End Secondary Loop
Red	B Plus
Yellow	Secondary Center Tap

**Chart of Standard Wiring Colors For IF (Intermediate Frequency) Transformer Applications.**
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Wire Color	Circuit Type
Blue	End Primary Loop (Collector)
Green	Start Primary Loop
Red	B Plus
Violet	Secondary Output
White	Secondary Low Side

**Chart of Standard Wiring Colors For Electronic Equipment Applications.**
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Wire Color	Circuit Type
Black	Ground
Blue	Transistor Collector, FET Drain
Brown	Filaments
Gray	AC power leads
Green	Transistor Base, FET Gate
Orange	Screen Grid (Gate 2)
Red	B Plus DC Supply
Violet	Power Supply Minus
White	Minus of Bias Supply
Yellow	Transistor Emitter, FET Source

Notes:
#1. These values are for educational purposes only.
Due to the wide range of circuit applications, the author assumes no responsibility for the application of these values.

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