Contents - AP Technology

Technical Guidelines
Current-carrying capacity
Reduction table
Table 5: Conversion factors
for current-carrying capacity of cables with enhanced temperature-resistance according to VDE 0298
Insulating material Enhanced temperature-resistance, PVC Silicone SIR
16.078
Products Individual cores Cable Individual cores Cable
Number of
loaded cores 1 2 or 3 1 2 or 3
Installation type
Ambient temperature in °C
50 1,00 1,00
55 0,94 1,00
60 0,87 1,00
65 0,79 1,00
70 0,71 1,00
75 0,61 1,00
80 0,50 1,00
85 0,35 1,00
90 - 1,00
95 - 1,00
100 - 1,00
105 - 1,00
110 - 1,00
115 - 1,00
120 - 1,00
125 - 1,00
130 - 1,00
135 - 1,00
140 - 1,00
145 - 1,00
150 - 1,00
155 - 0,91
160 - 0,82
165 - 0,71
170 - 0,58
175 - 0,41
Table 6: Conversion factors
for wound cables (according to VDE 0298)
Number of layers
on coil/drum 1 2 3 4 5
Conversion factors 0,80 0,61 0,49 0,42 0,38