Electrical Exam Term
Color Coding
The standard system of wire insulation colors used to identify conductor function in electrical circuits.
Detailed Explanation
NEC requires specific color coding: green or bare for equipment grounding conductors, white or gray for grounded (neutral) conductors. Hot (ungrounded) conductors can be any other color, but convention uses black for single-phase, and black/red/blue for three-phase systems. Orange is used for delta high-leg conductors. Proper color coding prevents dangerous miswiring and is critical for safe troubleshooting.
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