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FOREWORD
12
How To Read Electric Wire Code
★ The information about the wires unique to each machine model is described in Troubleshooting section, Relational
information of troubleshooting.
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.
Example: AEX
0.85
1.
Type, Symbol, And Material
AV and AVS are different in only thickness and outside diameter of the cover. CAVS has a circular compressed conductor.
It differs from AV and AVS in the outside diameter of the conductor and the thickness of the cover. AEX is similar to AV
in thickness and outside diameter of AEX, but different from AV and AVS in material of the cover.
(Table 1)
Type
Symbol
Low-voltage
wire for
AV
automobile
Thin-cover
low-voltage
wire for
AVS
automobile
(type 1)
Thin low-volt-
age wire for
CAVS
automobile
(type 2)
Heat-resistant
low-voltage
AEX
wire for
automobile
PC390LL-10
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 AV and AVS are classified by size (nominal No.), they are not indicated.)
Material
Annealed copper for electric
Conductor
appliance
Insulator
Soft polyvinyl chloride
Annealed copper for electric
Conductor
appliance
Insulator
Soft polyvinyl chloride
Annealed copper wire for
Conductor
electric appliance
Insulator
Soft polyvinyl chloride
Annealed copper for electric
Conductor
appliance
Heat-resistant crosslinked
Insulator
polyethylene
ELECTRIC WIRE CODE
Using
temperature
range °C (°F)
(Nominal No. 5 and above)
–30 to +60
(Nominal No. 3 and below)
(-22 to +140)
For mid- to small-size excavators
(nominal No. 125 and below)
General wiring in extremely cold
–50 to +110
district, wiring at high-temperature
(-58 to +230)
Example of use
General wiring
General wiring
place
00-39
00
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