Power Wiring Color Codes

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Typical power wiring color codes

120/240 Volt

• black - phase 1
• red - phase 2
• blue - phase 3
• white or with 3 white stripes - neutral
• green - ground

277/480 Volt

• brown - phase 1
• orange - phase 2
• yellow - phase 3
• gray or with 2 white stripes
• green with yellow stripe - ground

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• Electrical - Amps and electrical wiring, AWG - wire gauge, electrical formulas, motors and units

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