Section Area And Resistance Of Electric Wire - Takeuchi TB 175 Handbuch

11. ELECTRIC WIRING

11.2.4 Section area and resistance of electric wire

(1) Allowable maximum cable length （Terminal resistance is not included.）
Cable construction
Cable size
2
mm
Element No.
3 41
5 65
8 50
15 84
20 41
30 70
40 85
50 108
60 127
85 169
100 217
Note1) Allowable maximum resistance of Battery cable
Note2) Allowable maximum resistance of Starting motor circuit
(2) Terminal resistance
Generally, a terminal resistance is 15 mΩ per coupler and 0 Ω per screw setting. This resistance should be
included in allowable maximum resistance when the cable length is planned.
Resistance
(Ω/m)
Cable dia.
ø 0.32 0.005590
ø 0.32 0.003520
ø 0.45 0.002320
ø 0.45 0.001380
ø 0.80 0.000887
ø 0.80 0.000520
ø 0.80 0.000428
ø 0.80 0.000337
ø 0.80 0.000287
ø 0.80 0.000215
ø 0.80 0.000168
184
Note1 Ref.
2 mΩ 20 mΩ
(m)
0.36 3.58
0.57 5.68
0.86 8.62
1.45 14.49
2.25 22.55
3.85 38.46
4.67 46.73
5.93 59.35
6.97 69.69
9.30 93.02
11.90 119.05
Note2
50 mΩ
(m) (m)
8.94
14.20
21.55
36.23
56.37
96.15
116.82
148.37
174.22
232.56
297.62