Armoured Electrical Cable

1. What is armored cable?

An armored cable is a type of power cable that has an additional metallic protective layer (armor layer) wrapped around its core conductor. It is typically made of steel or aluminum to enhance mechanical protection and durability.

2. Why use armored cables?

Armored cables are designed to protect against mechanical damage, moisture, impact, rodents, and harsh environmental conditions, making them ideal for rough and exposed installation environments.

3. Where are armored cables typically used?

They are commonly used in underground power distribution, industrial facilities, commercial buildings, basements, and outdoor locations requiring extra protection.

4. What types of armored cables are there?

Common types include:

• SWA (Steel Wire Armored) – Heavy Duty Protection
• AWA (Aluminum Wire Armored) – Light Duty Protection
• STA (Steel Tape Armored) – Steel Tape Wrapped Armor

5. Can I lay armored cables myself?

While experienced DIY enthusiasts can perform basic installations, it should generally be installed by a qualified electrician to ensure safety, proper grounding, and compliance with local electrical codes. (General Electrical Practices; consult local regulations)

6. Why are armored cables typically not used for residential wiring?

Armored cables are heavier, less flexible, and more expensive than standard household cables. Residential circuits typically use unarmored cables (such as NM/Romex cables) or conduit systems because these are easier and less expensive to install. (Industry wiring codes)

7. Do armored cables need to be grounded?

Yes—the metal armor typically acts as a grounding loop or must be connected to a grounding conductor to safely clear faults and reduce the risk of electric shock.

8. Are armored cables suitable for underground burial?

Yes—one of the primary uses of armored cables is direct burial in the ground or within conduits, where mechanical protection is crucial against soil pressure and damage.

9. What is the rated voltage of armored cables?

Armored power cables are available in various voltage ratings, commonly including low-voltage (e.g., 0.6/1kV) cables for general power distribution and medium-voltage cables for industrial applications.

10. How to Choose the Right Armored Cable?

When selecting the right armored cable, consider the environment (indoor/outdoor/underground), mechanical stress, rated voltage, conductor size, and compliance with local standards to ensure safety and a long service life.