Copper Rectangular Conductor Data

Rectangular Bare Standards

Tolerances on dimensions and shape

Thickness and width

The thickness and widths of conductors as supplied shall be within the tolerances for the ordered thicknesses and widths given in this table.

Tolerances on thickness and width
Ordered width or thickness
Over Up to and including Tolerance
mm mm mm
0.49 3.15 ±0.03
3.15 6.30 ±0.05
6.30 12.50 ±0.07
12.5 25.00 ±0.10
25.00 50.00 ±0.14
50.00 100.00 ±0.25
100.00 160.00 ±0.40
Corner radii and tolerances on corner radii
Thickness (t)
Over Up to and including Corner radius Tolerance on corner radius
mm mm mm mm
0.49 1.0 0.5t* ±0.08
1.0 1.6 0.5 ±0.08
1.6 2.24 0.65 ±0.12
2.24 3.55 0.8 ±0.12
3.55 10.0 1.0 ±0.15
* i.e. half the thickness

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