Foreword and general information
How to read electric wire code
PC800, 850-8E0
How to read electric wire code
00-36
(Rev. 2010/03)
In the electric circuit diagram, the material, thickness, and color of each electric wire are indicated by symbols.
The electric wire code is helpful in understanding the electric circuit diagram.
1.
Type, symbol, and material
AV and AVS are different only in thickness and outside diameter of the cover. CAVS has a circular
compressed conductor. It differs from AV and AVS in the outside diameter and thickness of the cover. And
AEX is similar to AV in thickness and outside diameter of the cover but different from AV and AVS in mate-
rial of the cover.
Exam-
ple:
AEX
0.85
L
- - -
Indicates blue, heat-resistant, low-voltage wire for automobile, having nominal No.
of 0.85
Indicates color of wire by color code.
Color codes are shown in Table 3.
Indicates size of wire by nominal No.
Size (Nominal No.) is shown in Table 2.
Indicates type of wire by symbol.
Type, symbol, and material of wire are shown in Table 1.
(Since the use of AV and AVS wires depends on size (nominal No.), their symbols
are not indicated on the diagram.)
(Table 1)
Type
Symbol
Material
Tempera-
ture range
for use ( °C)
Example of use
Low-voltage
wire for automo-
biles
AV
Conductor
Annealed copper for electric
appliance
-30 – +60
General wiring
(nominal No. 5 and above)
Insulator
Soft polyvinyl chloride
Thin low-volt-
age wire for
automobile
(type 1)
AVS
Conductor
Annealed copper for electric
appliance
General wiring
(nominal No. 3 and below)
Insulator
Soft polyvinyl chloride
Thin low-volt-
age wire for
automobile
(type 2)
CAVS
Conductor
Annealed copper for electric
appliance
For mid- to small-size excavators
(nominal No. 1.25 and below)
Insulator
Soft polyvinyl chloride
Heat resistant
low-voltage wire
for automobiles
AEX
Conductor
Annealed copper for electric
appliance
-50 – +110
General wiring in extremely cold
weather district, wiring at high
ambient temperature place
Insulator
Heat-resistant crosslinked
polyethylene
00-36
