Cable Glands Size Chart – Explanation for Gland Selection

Choosing the right Cable Gland shouldn’t be a puzzle. Here’s a shortcut for you. Do you ever wonder how cables safely enter and exit electrical enclosures? A small but crucial component, the Cable Gland makes this possible. In this blog, we will discuss how to select Cable Glands from size chart.

What are Cable Glands?

Cable glands are also known as mechanical cable entry devices. They are essential components in any electrical wiring system, as they provide a secure and waterproof connection for cables.
These glands are designed to fasten and seal the end of an electrical cable to the equipment.
Certain types of cable glands also prevent flammable gas entry into equipment used in hazardous areas.

Types & Applications of Cable Glands

Glands can be divided into 2 major categories – Metallic & Non-metallic.

• Metallic Glands consist of Stainless-Steel Glands and Brass Glands. They are used in areas with a high demand for chemical and mechanical stability, such as chemical and other industrial applications.
• Non- Metallic Glands which consist mainly of Plastic Cable Glands. They are used in applications that require resistance from saltwater, as plastic makes the gland saltwater-resistant and resistant to weaker acids and grease. These glands are used for data cables, electrical power and telecommunication. They are ideal for flexible cables where high-strain relief is required.

How to select a Cable Gland from Size Chart?

Note – The cable gland size is based on the nominal dimensions of overall diameter and armour diameter.
We will understand the selection by referring to this table.

The values in the rows show the cable cross-section area in mm² and those in the columns show the number of cores in the cable.
Step 1– Select the cable size you have from the values in the rows.
Step 2– Find the number of cores in the cable from the columns.
Step 3– Identify the corresponding cell or box, which will show the appropriate cable gland size.
For example, for a 25mm² cable with 4 cores, we get the cable gland size as 32.
Similarly, for a 35mm² cable with 2 cores, the size will be 25 or 32.
I hope you now have a clear understanding of selecting cable glands from the size chart.
Improper cable gland installation can lead to short circuits and fire. You can learn the correct installation techniques by watching our video on BW Brass Cable Glands installation on Steel Wire Armoured Cables.
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