Factor Table 12

Calculation factor according to German Standard VDE 0276-1000 (1999), Table 12, applicable to cables in air at different air temperatures.

Symbol
$F_{T12}$
Unit
p.u.
Choices
permissible conductor temp.
 
air temp.
10
1520253035404550
901.151.121.081.041.00.960.910.870.82
801.181.141.11.051.00.950.890.840.77
701.221.171.121.061.00.940.870.790.71
651.251.21.131.071.00.930.850.760.65
601.291.221.151.081.00.910.820.710.58