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Values given for:
• Cable with copper conductors
• Cable with PVC insulation (for other insulants see Table 3)
• Ambient temperature 40°C max. (for others see Table 2)
• Three-phase cable under load without including starting currents
• BT / C/ E cable layout.
Maximum Admissible Current
Cable section
3 x 1.5 mm²
3 x 2.5 mm²
3 x 4mm²
3 x 6 mm²
3 x 10 mm²
3 x 16 mm²
3 x 25 mm²
3 x 35 mm²
3 x 50 mm²
3 x 70 mm²
Table 2 (correction factors for different ambient temperatures)
Table 3 (correction factors for different cable insulating materials)
Natural or Synthetic Rubber
Installation manual
Seated in Cable Duct or
Cable trough
B2
12.2 A
16.5 A
23 A
29 A
40 A
53 A
67 A
83 A
-
-
Ambient temperature
30 °C
35 °C
40 °C
45 °C
50 °C
55 °C
60 °C
Insulating material
PVC
Silicone Rubber
Wall fixing
BC
15.2 A
21 A
28 A
36 A
50 A
66 A
84 A
104 A
123 A
155 A
Correction factor
1.15
1.08
1.00
0.91
0.82
0.71
0.58
Max. Working tempera-
ture range
70°C (158 °F)
760°C (140 °F
120°C (248 °F)
Cable tray
E
16.1 A
22 A
30 A
37 A
52 A
70 A
88 A
114
123 A
155 A
Correction factor
1.00
0.92
1.60
37
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