Some conductors in the database are missing values for temperature coefficient of Resistance, used by the Conductor Ratings module. Suitable values are shown below.


Aluminium 1350

0.00403

Aluminium alloy 1120

0.0039
Aluminium alloy 6201A
0.0036
Copper
0.00381
Steel, zinc-coated (GZ)
0.0044


These values are taken from the relevant Australian Standards.