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HOW TO READ ELECTRICAL WIRE CODE
HOW TO READ ELECTRICAL WIRE CODE
In the electrical circuit diagram, the material, thickness, and color of each electric wire are indicated by symbols.
The electrical wire code is helpful in understanding the electrical circuit diagram.
Example) AEX 0.85 L: Indicates heat-resistant, low-voltage blue wire for automobile, having nominal No. of 0.85
Indicates type of wire by symbol.
Type, symbol, and material of wire are shown in (Table 1).
AEX
(Since the use of AV and AVS wires depends on size (nominal No.), the symbols are not indicated on
the diagram.)
Indicates size of wire by nominal No.
0.85
Sizes (Nominal Nos.) are shown in (Table 2).
Indicates color of wire by color code.
L
Color codes are shown in (Table 3).
Type, symbol, and material
AV and AVS are different in only thickness and outside diameter of the coating. CAVS has a circular com-
pressed conductor. It differs from AV and AVS in the outside diameter of conductor and thickness of the coating.
AEX is similar to AV in thickness and outside diameter of the coating but different from AV and AVS in material
of the coating.
(Table 1)
Sym-
Type
bol
Low-voltage
wire for auto-
AV
mobile
Thin-cover
low-voltage
wire for auto-
AVS
mobile
(Type 1)
Thin-cover
low-voltage
wire for auto-
CAVS
mobile
(Type 2)
Heat-resistant
low-voltage
AEX
wire for auto-
mobile
00-74
Conductor ma-
Insulator material
terial
Soft polyvinyl chloride
Annealed cop-
per for electric
appliance
Heat-resistant cross-
linked polyethylene
00 INDEX AND FOREWORD
Temperature
range (°C) in
Example of use
use
For large current wiring
(nominal No. 5 and above)
General wiring
(nominal No. 3 and lower)
-30 to +60
For mid- to small-size excava-
(nominal No. 1.25 and lower)
General wiring for extremely
cold weather specification
-50 to +110
Wiring at high-temperature
tors
place
PC210LCI-11
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