FOREWORD ELECTRIC WIRE CODE ELECTRIC WIRE CODE In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires. This wire code table will help you understand WIRING DIAGRAMS. Example: 5WB indicates a cable having a nominal number 5 and white coating with black stripe. CLASSIFICATION BY THICKNESS CLASSIFICATION BY COLOR AND CODE 00-15 Norminal number Copper wire Cable O.D. (mm) Current rating (A) Applicable circuit Number of strands Dia. of strands (mm2) Cross section (mm2) 0.85 11 0.32 0.88 2.4 12 Starting, lighting, signal etc. 2 26 0.32 2.09 3.1 20 Lighting, signal etc.
5 65 0.32 5.23 4.6 37 Charging and signal 15 84 0.45 13.36 7.0 59 Starting (Glow plug) 40 85 0.80 42.73 11.4 135 Starting 60 127 0.80 63.84 13.6 178 Starting 100 217 0.80 109.1 17.6 230 Starting Priori- ty Circuits Classi- fication Charging Ground n Starting Lighting Instrument Signal Other 1 Pri- mary Code W B n B R Y G L Color White Black n Black Red Yellow Green Blue 2 Auxi- liary Code WR n BW RW YR GW LW Color White & Red n White & Black Red & White Rellow & Red Green & White Blue & White 3 Code WB BY RB YB GR LR Color White & Black n Black & Yellow Red & Black Yellow & Black Green & Red Blue & Yellow 4 Code WL n n BR RY YG GY LY Color White & Blue n n n n Black & Red n Red & Yellow Yellow & Green Green & Yellow Blue & Yellow n 5 Code WG n n n RG YL GB LB n Color White & Green Red & Green Yellow & Blue Green & Black Blue & Black 6 Code RL YW GL Color Red & Blue Yellow & White Green & Blue