How To Read Electric Wire Code - Komatsu 70001 Shop Manual

00 Index and foreword

How to read electric wire code

a 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 sym-
bols. 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. AEX is similar to AV in
thickness and outside diameter of AEX and different from AV and AVS in material of the cover.
(Table 1)
Sym-
Type
bol
Low-voltage
wire for AV
automobile
Thin-cover
low-voltage
AVS
wire for
automobile
Heat-resis-
tant low-volt-
AEX
age wire for
automobile
PC400, 450-8
L - - - Indicates blue, heat-resistant, low-voltage wire for automobile, having nomi-
nal 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 indi-
cated.)
Material
Conduc- Annealed copper for elec-
tor tric appliance
Insulator Soft polyvinyl chloride
Conduc- Annealed copper for elec-
tor tric appliance
Insulator Soft polyvinyl chloride
Conduc- Annealed copper for elec-
tor tric appliance
Heat-resistant crosslinked
Insulator
polyethylene
1
Using
temperature
range (°C)
–30 to +60
–50 to +110
SEN02226-02
Example of use
General wiring
(Nominal No. 5 and above)
General wiring
(Nominal No. 3 and below)
General wiring in extremely
cold district, wiring at high-tem-
perature place
23