SWA Cable Gland Chart

Our comprehensive SWA Cable Gland Chart makes selecting the right gland size for your cable installation easy. Whether you’re working with armoured or unarmoured cables, this guide helps you identify the correct gland type based on cable core and size. SWA glands are essential for secure terminations in electrical installations, providing robust protection in challenging environments by ensuring a tight seal that safeguards against moisture, dust, and mechanical stress.

Use this chart to find the ideal SWA cable gland for your project, and explore our extensive selection of SWA Gland Packs and Storm Glands to ensure durability and efficiency in every installation.

Cable Size 1 Core 2 Core 3 Core 4 Core 5 Core 7 Core 12 Core 19 Core 27 Core 37 Core 48 Core
1.5mm² – 20S 20S 20S 20S 20 25 25 32 32 32
2.5mm² – 20S 20S 20S 20 20 25 25 32 40 40
4.0mm² – 20S 20S 20 20 20 25 32 40 40 50
6.0mm² – 20 20 20 20 25 – – – – –
10.0mm² – 20 20 25 25 – – – – – –
16.0mm² – 25 25 25 25 – – – – – –
25.0mm² – 25 25 32 32 – – – – – –
35.0mm² – 32 32 32 40 – – – – – –
50.0mm² 20 32 32 40 50 – – – – – –
70.0mm² 20 32 32 40 50 – – – – – –
95.0mm² 25 32 40 50S – – – – – – –
120.0mm² 25 40 50S 50 – – – – – – –
150.0mm² 32 40 50S 50 – – – – – – –
185.0mm² 32 50S 50 63S – – – – – – –
240.0mm² 32 50 63S 63 – – – – – – –
300.0mm² 40 63S 63 75S – – – – – – –
400.0mm² 40 63S 75S 75 – – – – – – –

Explore our full range of SWA and Storm gland packs to find the perfect fit for your project needs:


AFDDs and SPDs: Essential Protection for Modern Electrical Installations

Electrical safety is a top priority in today’s homes and commercial buildings. As the number of electrical devices continues to grow, so does the risk of electrical faults, particularly arc faults and surges. By integrating Arc Fault Detection Devices (AFDDs) and Surge Protection Devices (SPDs) into your system, you can enhance both safety and reliability. Let’s explore what AFDDs and SPDs are, their unique roles, and why they’re indispensable in modern installations.

What is an AFDD?

Arc Fault Detection Devices (AFDDs) are advanced safety devices that detect and interrupt dangerous electrical arcs. An arc fault is an unintended electrical discharge that can occur in damaged or faulty wiring, potentially causing a fire.

How Does an AFDD Work?

AFDDs monitor circuits for arc faults and disconnect power upon detecting a dangerous arc. This prevents potential fires from faulty wiring or loose connections.

Where Should AFDDs Be Used?

Do You Need an AFDD for Every Circuit?

Typically, AFDDs are installed on high-risk circuits. Since each AFDD protects only one circuit, you’ll need multiple AFDDs if you want protection across different areas. We recommend assessing which circuits in your property are most vulnerable to arc faults and consulting with a qualified electrician to decide where AFDDs would be most effective.

What is an SPD?

Surge Protection Devices (SPDs) prevent damage from power surges—sudden spikes in voltage that can harm devices and wiring. Surges can be caused by external sources, such as lightning, or by internal sources, like large appliances turning on or off.

How Does an SPD Work?

SPDs absorb excess voltage and divert it safely to the ground, protecting connected devices from harmful surges. Typically, one SPD installed at the main distribution board can safeguard all circuits within a property.

Types of SPDs

AFDDs vs. SPDs: Key Differences

Feature AFDD SPD
Primary Function Detects arc faults to prevent fires Diverts surge energy to prevent damage
Protection Scope Single circuit Entire board or individual devices
Common Use High-risk residential and commercial circuits Distribution boards in buildings and homes

Why AFDDs and SPDs are Essential for Electrical Safety

Incorporating AFDDs and SPDs into electrical systems is a proactive approach to safety. UK regulations, like BS 7671 (IET Wiring Regulations), highlight the importance of these devices, especially in high-risk areas. With AFDDs to mitigate fire risks from arc faults and SPDs to prevent equipment damage from voltage spikes, your property remains protected from the unexpected. Consider your building’s needs and consult a qualified electrician for installation advice.

Shop for reliable, certified AFDDs and SPDs on YourElectrics.com. Our range includes top-quality brands designed to enhance safety and meet UK regulatory standards. Take the step towards a safer installation today.