Armatures and Field Coils

Wires and Cables

Wires conduct electricity between components in a circuit. Their size is determined by the amount of current that is to pass through them. Larger diameter wires are required to pass greater amounts of current, as in the power circuit. Notice on the schematics in this book that the power circuit wires are drawn wider than the control circuit wires. Also, look at the EV-100 schematic in Section 2. Notice that wires from several components, like the sensor and the rectifiers, are twisted. This is done because current-carrying wires produce a magnetic field around themselves. The polarity of the field is determined by the direction of the current. When wires carry cwTent in opposite directions, twisting the wires together tends to cancel out the opposite fields. The wire numbers on the schematic identify the wire and usually coITespond to the color of the wire and its stripe. The colors can be translated from the following chart:

Clark Wiring Color Code for Electric Trucks Wire Color Number Code #0 Black

#1 #2 #3 #4 #5 #6 #7 #8 #9 Brown Red Orange Yellow Green Blue Violet Gray White

Note When the wire number is two digits, the first digit signifies the color of the stripe, the last digit of the number signifies the base color of the wire.

Example: Wire #50 = black base, green stripe Wire #12 = red base, brown stripe Wire #21 = brown base, red stripe Wire #54 = yellow base, green stripe