90-degree bend cable tray algorithm

To create a 90-degree bend in a cable tray, you can follow specific cutting measurements and techniques to ensure a proper fit. Steps to Create a 90-Degree BendMark the Tray: Start by marking the tray where the bend will occur. The amount of tray lip to be removed is typically equal to 2.

75 times the width of the tray, with half of this measurement removed on either side of the center line. Cut the Tray: Use a hand grinder or file to remove the lip. Then, cut down the center line of the tray, ensuring not to let it fall open, as this may cause damage.

Flatten the Lip: Use a blunt object to flatten the tray lip at the point where the bend will occur. This will help facilitate a clean bend. Bend the Tray: Carefully bend the tray to a 90-degree angle and bolt the two parts together to secure the bend.

Measure for Gusset: Measure the distance between the two internal edges of the bend. This measurement will be used to create a gusset, which is a piece of tray cut to the required size, with one lip completely removed and bolted to the 90-degree bend.

Additional Considerations

Sweeping Bends: For a sweeping 90-degree bend, you can create two 45-degree angles or three 30-degree angles. The formula for the length of the cut-out section can vary based on the width of the tray. For example, if the tray width is 600mm, you can calculate the cut-out size by dividing the width by the number of angles.

General Formula: A common formula for calculating the length of the cut-out section for a 90-degree bend is to use the width of the tray and the angle of the bend. For example, if you need to make a 22-degree set, you can calculate the cut-out size by dividing the tray width by the angle factor derived from dividing 90° by the angle. By following these steps and using the appropriate measurements, you can effectively create a 90-degree bend in a cable tray for your electrical installations.