90 CIRCUIT DIAGRAMS
HOW TO READ THE CODES FOR ELECTRIC CABLE
HOW TO READ THE CODES FOR ELECTRIC CABLE In the electric circuit diagram, the type, size and color of electric wires are shown by symbols. This symbol is called a electric wire cord and it is useful for understanding the electric circuit diagram. Example) AEX 0.85 L: It shows the blue cable with the electrical wire number 0.85 for heat resistant low voltage electric wire for automobiles. The type of electric wire is shown by a symbol. AEX
0.85 L
The types, symbols and materials of the wires are as shown in (Table 1). (For AV and AVS, it can be distinguished by size (electrical wire number), so they are not shown on the electric circuit diagram) The wire size are shown by the electrical wire number. The wire size and electrical wire number are as shown in (Table 2). The color of electric wire is shown by color code. Color codes are as shown in (Table 3).
Type, symbol and material (Table 1) Type
Low voltage electric wire for automobiles Thin low voltage electric wire for automobiles
symbol
Conductor materials
Insulator materials
Operating temperature range (℃)
For high current wiring AV
(electrical wire number 5 or more) For general wiring
AVS
Soft vinyl chloride
-30 to +60
(Type 1) Thin low voltage electric wire for automobiles
CAVS
Annealed copper wires for electrical purposes
AEX
(electrical wire number 3 or less) For medium and small excavators (electrical wire number 1.25 or less)
(Type 2)
Heat resistant low voltage electric wire
Application example
Heat resistant crosslinked polyethylene
-50 to +110
For general wiring of extreme cold weather specification For wiring for high ambient temperature
•
The difference between AV and AVS is only the coating thickness and the coating outside diameter.
•
CAVS uses a circular compression conductor for the conductor.
•
CAVS is different from AV and AVS in conductor outside diameter and coating thickness.
•
AEX is different from AV and AVS in coating material.
HD785-7
90-3
