How To Read Electric Wire Code - Komatsu PC200-8M0 Shop Manual

200 Foreword and general information

How to read electric wire code

How to read electric wire code

q In the electrical circuit diagram, material, thickness and color of each electric wire are indicated by sym-
bols. The wire code is helpful in understanding the electrical circuit diagram.
Example) AEX 0.85 L: Indicates blue, heat-resistant, low-voltage 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.), their symbols are not indi-
cated on the diagram.)
Indicates size of wire by nominal No.
0.85
Size (Nominal No.) is shown in Table 2.
Indicates color of wire by color code.
L
Color codes are shown in Table 3.
Type, symbol, and material
q AV and AVS are different in thickness and outside diameter of the coating. CAVC has a circular com-
pressed conductor. It differs from AV and AVS in the outside diameter of conductor and thickness of the
coating. And 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 AV
automobile
Thin-cover
low-voltage
wire for AVS
automobile
Annealed
(Type 1)
Thin-cover
tric appli-
low-voltage
wire for CAVS
automobile
Type 2
Heat-resis-
tant low-volt-
AEX
age wire for
automobile
PC200, 200LC, 220, 220LC-8M0
Conductor Material
Soft polyvinyl chloride
copper
for elec-
ance
Heat-resistant crosslinked
polyethylene
Tempera-
ture range Example of use
(°C) in 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
(nominal No. 1.25 and lower)
(Safety factor:
–50 to +110 Wiring at high-temperature
SEN06112-00
1
excavators
place
29
00-200