By Jianyun Cable – Leading Manufacturer of Armoured Power Cables

The two main types of **armoured cable** used worldwide are Steel Wire Armoured (SWA) and Aluminium Wire Armoured (AWA). In 2026, understanding the difference between these two **armoured cable** types is essential for safe and cost-effective power installations.

Both provide excellent mechanical protection, but they differ in material, weight, magnetic behaviour and ideal applications. This guide helps you choose the right **armoured cable** for your project.

1. Introduction

**Armoured cable** is a power cable reinforced with a metal layer that protects the inner conductors from physical damage, making it suitable for direct burial, outdoor and industrial use.

While SWA uses steel wires, AWA uses aluminium wires. The choice affects weight, cost, magnetic performance and where each type can be safely installed.

Knowing the differences ensures compliance with regulations and long-term reliability.

2. What Is Armoured Cable?

**Armoured cable** consists of copper or aluminium conductors, insulation (usually XLPE or PVC), bedding, metal armour and an outer sheath.

The armour layer provides mechanical protection against impact, crushing, cutting and rodents, allowing direct burial without additional conduit in most cases.

Rated 600/1000V, it is the go-to solution for underground power, outdoor supplies and harsh environments.

3. Type 1 – Steel Wire Armoured Cable (SWA)

SWA cable uses galvanized steel wires wound helically around the core, providing very high crush and impact resistance.

It is the most common type for multi-core cables in underground and exposed installations.

Because steel is magnetic, SWA should not be used for single-core AC circuits due to induced heating from eddy currents.

4. Type 2 – Aluminium Wire Armoured Cable (AWA)

AWA cable uses aluminium wires instead of steel, making it lighter and non-magnetic.

It is preferred for single-core cables carrying high AC currents because it avoids the heating problems caused by magnetic materials.

AWA offers good mechanical protection (though slightly less than SWA) and is commonly used in industrial and utility applications.

5. SWA vs AWA: Side-by-Side Comparison

6. When to Choose SWA or AWA

Choose **SWA armoured cable** for most multi-core applications: underground mains supply, outdoor lighting, industrial plants and construction sites.

Select **AWA armoured cable** when using single-core cables with high AC current or where weight reduction is important.

Both types are excellent – the decision comes down to circuit type and project requirements.

FAQ

Which is stronger – SWA or AWA?

SWA generally offers better crush and impact resistance due to the strength of steel wires.

Can I use SWA for single-core cables?

No – steel is magnetic and can cause overheating from induced currents. Use AWA instead.

Is AWA lighter than SWA?

Yes – aluminium armour makes AWA noticeably lighter, which helps during installation of long runs.