
For all sheet metal components, the standard recommendation is 1t, meaning that the smallest bend radius should be at least equal to the thickness of the sheet. For instance, the minimum bend radius should be 1t, or 2mm, if the sheet is 2mm thick.
When developing formed parts, the industry standard bend radius of 0.030" is your best bet. This test guarantees reliable structural integrity and consistently high-quality parts.
Bend radius: The separation, between the bend lines, between the material's interior surface and the bend axis. Bend angle: The angle formed by the bend, either as the included angle between perpendicular lines drawn from the bend lines, or as the angle between the bent flange and its original position.
250 MCM can bend with a minimum radius of about 6.5".
Any bend's inner edge curve must have a radius that is at least five times the diameter of the Type AC cable.
Tolerances for wire shaping are +/- 0.06 on an assembly or +/- 0.01 per bend. The chart below illustrates how additional tolerances can be attained by careful engineering, alternative techniques, customized machining, and tooling.
A terminal may be shared by up to two neutral wires. C: It is acceptable for more than one grounded neutral conductor to share a terminal. Every grounded conductor must end in a separate terminal inside the panelboard that isn't being used by another conductor.
In these installations, each conductor's permitted ampacity must be lowered in accordance with Table 310.15(B)(3)(a) if the cables are bundled for a continuous length longer than 24 in.
When use multi-conductor cables, all phases are installed simultaneously, however when utilizing single-conductors, each phase must be installed independently. Phase conductors in multi-conductor cables are twisted together for the smallest possible spacing, together with any neutral conductors that may be present.
Compared to solid wires, stranded wires are more flexible and bendable, making it simpler to route them around obstructions. Adaptability. Stranded wires are more pliable and can withstand greater flexing and vibration before breaking.