Komatsu PC130-7 Shop Manual page 18

FOREWORD
ELECTRIC WIRE CODE
In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires.
This wire code table will help you understand WIRING DIAGRAMS.
Example: 5WB indicates a cable having a nominal number 5 and white coating with black stripe.
CLASSIFICATION BY THICKNESS
Norminal
number
Number of
strands
0.85 11
2 26
5 65
15 84
40 85
60 127
100 217
CLASSIFICATION BY COLOR AND CODE
Circuits
Priori-
ty Classi-
fication
Code
Pri-
1
mary
Color
Code
2
Color White & Red
Code
3
Color White & Black
Code
Auxi-
4
liary
Color White & Blue
Code
5
Color White & Green
Code
6
Color
Copper wire
Dia. of Cross
strands section
2
(mm ) (mm
0.32 0.88
0.32 2.09
0.32 5.23
0.45 13.36
0.80 42.73
0.80 63.84
0.80 109.1
Charging Ground Starting
W B
White Black
WR —
— White & Black Red & White Rellow & Red Green & White Blue & White
WB —
— Black & Yellow Red & Black Yellow & Black Green & Red Blue & Yellow
WL —
— Black & Red Red & Yellow
WG —
—
— —
— —
Cable O.D.
(mm)
2
)
2.4
3.1
4.6
7.0
11.4
13.6
17.6
Lighting
B R
Black Red
BW RW
BY RB
BR RY
— RG
— Red & Green Yellow & Blue Green & Black Blue & Black
— RL
— Red & Blue Yellow & White Green & Blue
ELECTRIC WIRE CODE
Current
rating Applicable circuit
(A)
Starting, lighting, signal
12
20 Lighting, signal etc.
37 Charging and signal
59 Starting (Glow plug)
135 Starting
178 Starting
230 Starting
Instrument Signal
Y G
Yellow Green
YR GW
YB GR
YG GY
Yellow & Green &
Green Yellow
YL GB
YW GL
etc.
Other
L
Blue
LW
LR
LY
Blue & Yellow
LB
n
n
00-15