16th Edition (reference only) – NOW superseded by the 17th Edition IEE Regulations.
Table 4.15 - Cable factors (terms) for straight runs up to 3m.
Type of conductor Conductor c.s.a. (mm²) Cable factor
Solid
1.0
22
Solid
1.5
27
Solid
2.5
39
Stranded
1.5
31
Stranded
2.5
43
Stranded
4.0
58
Stranded
6.0
88
Stranded
10.0
146

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Extracted from The Electricians Guide Fifth Edition
by John Whitfield

Published by EPA Press Click Here to order your Copy.

Click here for list of abbreviations