TWI Wires & Cables
Armoured Cables – PVC Sheathed (XLPE Insulated)
TWI Wires & Cables offers premium quality PVC Sheathed Armoured Cables engineered for durability, safety, and long-term performance. Designed for low voltage and medium voltage power distribution, our armoured cables are manufactured in compliance with British, European, and International standards.
These cables are ideal for underground installations, industrial environments, outdoor applications, and power networks where mechanical protection is essential.
🔹 Construction of TWI Armoured Cable
Our cables are designed with precision-engineered layers to ensure electrical efficiency and mechanical strength.
1️⃣ Conductors
Function: Current carrying component
Material Options:
- Plain / Stranded / Compacted Copper (as per IEC 60228)
- Stranded / Compacted Aluminium
2️⃣ Insulation
Function: Provides dielectric strength and voltage rating
Material:
- Cross-linked Polyethylene (XLPE) Type GP8 as per BS 7655
3️⃣ Fillers
- Non-hygroscopic compatible fillers
- Maintains circular shape
- Enhances structural integrity
4️⃣ Bedding
Function: Protection for laid-up cores and armour base
Material:
- Extruded PVC Type 9 Compound (BS 7655 compliant)
- Reduced Flame Propagation (RP) / RPLHCL compounds available
5️⃣ Armour (Mechanical Protection Layer)
Provides:
✔ Mechanical protection
✔ Earth Continuity Conductor (ECC)
Types:
- Galvanised Steel Wire Armour (GSWA) – For Multicore Cables
- Aluminium Wire Armour (AWA) – For Single Core Cables
6️⃣ Oversheath (Outer Protection)
Standard Finish:
- PVC Type 9 Compound compliant with IEC 60332-1
Optional Variants:
- Medium Density Polyethylene (MDPE) – Enhanced water resistance
- Anti-Termite Compound
- Reduced Propagation (RP)
- Reduced Propagation Low Halogen (RPLHCL)
🔹 Technical Characteristics
Voltage Rating:
Uo/U = 0.6/1kV
Temperature Rating:
-25°C to +90°C
Minimum Bending Radius:
- 1.5mm² – 16mm²: 6 × overall diameter
- 25mm² and above: 8 × overall diameter
🔹 Standards Compliance
TWI Armoured Cables are manufactured in accordance with:
- BS 5467
- BS 7889
- IEC 60502-1
- IEC 60228
- BS 7655
- IEC 60332
🔹 Core Identification
| No. of Cores | Colour Code |
|---|---|
| 1 Core | Red / Black |
| 2 Core | Red, Black |
| 3 Core | Red, Yellow, Blue |
| 4 Core | Red, Yellow, Blue, Black |
| 5 Core | Red, Yellow, Blue, Black, Yellow/Green |
🔹 Applications
TWI PVC Sheathed Armoured Cables are suitable for:
- Underground power distribution
- Industrial installations
- Outdoor and indoor fixed wiring
- Cable duct installations
- Power networks
- Commercial and infrastructure projects
Ideal for environments requiring enhanced mechanical protection and flame retardant performance.
🔹 Why Choose TWI Wires & Cables?
✔ Manufactured to international standards
✔ Superior mechanical strength
✔ High flame resistance options
✔ Anti-termite and moisture-resistant variants
✔ Reliable long service life
✔ Suitable for harsh industrial environments