Komatsu A73001, Shop Manual

Page: 21 / 41

FOREWORD ELECTRIC WIRE CODE
WB156PS-5 00-15
b
12
ELECTRIC WIRE CODE
00
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:
05WB indicates a cable having a nominal number 05 and white coating with black stripe.
CLASSIFICATION BY THICKNESS
00
CLASSIFICATION BY COLOR AND CODE
00
Nominal num-
ber
Copper wire
Cable O.D.
(mm)
Current rat-
ing (A)
Applicable circuit
Number of
strands
Dia. Of strand
(mm)
Cross section
(mm)
0.85 11 0.32 0.88 2.4 12 Starting, lighting, signal etc.
2 26 0.32 2.09 3.1 20 Lighting, signal etc.
5 65 0.32 5.23 4.6 37 Charging and signal
15 84 0.45 13.36 7.0 59 Starting (Glow plug)
40 85 0.80 42.73 11.4 135 Starting
60 127 0.80 63.84 13.6 178 Starting
100 217 0.80 109.1 17.6 230 Starting
Priority
Circuits
Classi-
fication
Charging Ground Starting Lighting Instrument Signal Other
1
Pr
imar
y
Code W B B R Y G L
Color White Black Black Red Yellow Green Blue
2
Auxi
liary
Code WR — BW RW YR GW LW
Color
White &
Red
—
Black &
White
Red &
White
Yellow &
Red
Green &
White
Blue &
White
3
Code WB — BY RB YB GR LR
Color
White &
Black
—
Black &
Yellow
Red & Black
Yellow &
Black
Green &
Red
Blue & Red
4
Code WL — BR RY YG GY LY
Color
White &
Blue
— Black & Red
Red &
Yellow
Yellow &
Green
Green &
Yellow
Blue & Yel-
low
5
Code WG — — RG YL GB LB
Color
White &
Green
— —
Red &
Green
Yellow &
Blue
Green &
Black
Blue &
Black
6
Code — — — RL YW GL —
Color — — — Red & Blue
Yellow &
White
Green &
Blue
—