Earthing Cables – Copper Grounding & Marine Earthing Cable
TWI Wires & Cables manufactures and exports high-quality Earthing Cables (Grounding Cables) designed for safe electrical grounding in domestic, commercial, industrial, and marine installations.
Our earthing cables are engineered to provide reliable fault current dissipation, enhanced electrical safety, and long service life. Manufactured in compliance with British and International standards, TWI earthing cables are suitable for ship wiring, building installations, and power distribution systems across Africa and the Middle East.
High-Performance Earthing Cables for Safe Electrical Grounding
TWI Earthing Cables are designed for:
- Electrical grounding systems
- Marine and ship wiring
- Domestic and commercial installations
- Industrial power systems
- Conduit and trunking installations
- Fixed wiring in dry or damp premises
The outer sheath is coloured Green/Yellow for easy identification in accordance with international grounding standards.
Construction of TWI Earthing Cable
Our earthing cables are manufactured using high-conductivity materials to ensure optimal grounding performance.
Conductors
Function: Current carrying component responsible for safe fault current discharge.
Material Options:
- Stranded, high-conductivity plain annealed copper wires (Class 2) as per IEC 60228
- Also compliant with BS EN 60228
- Aluminium stranded compacted conductors (available on request)
Copper conductors ensure excellent conductivity and minimal resistance during fault conditions.
Insulation
The insulation determines the voltage rating and operational safety of the cable.
Material:
- PVC Grade Type TI1 as per BS 7655
- Suitable for maximum continuous conductor temperature of 70°C
- Provides reliable insulation strength and durability in standard wiring installations
Technical Characteristics
Voltage Rating:
450/750 Volts
Temperature Rating:
-5°C to +70°C
Minimum Bending Radius:
Fixed installation: 6 × overall diameter
Flame Retardant Properties:
Compliant with IEC 60332-1
Standards Compliance
- BS EN 50525-2-31
- BS EN 60228
- BS 7655
- IEC 60332-1
Core Identification
Available colours:
- Red
- Black
- Yellow
- Blue
- Green/Yellow (Standard for Earthing)
Custom colours can be manufactured as per project specifications.
Applications
TWI Earthing Cables are ideal for:
- Domestic wiring systems
- Commercial buildings
- Industrial electrical systems
- Marine & ship wiring
- Fixed installations in dry or damp environments
- Installation in conduit or trunking
- Surface clipped wiring where mechanical damage risk is minimal
Designed to ensure electrical safety and reliable grounding in power distribution systems.
Why Choose TWI Wires & Cables?
- ✔ High conductivity copper conductors
- ✔ International standard compliance
- ✔ Durable PVC insulation
- ✔ Flame retardant properties
- ✔ Export-ready packaging
- ✔ Competitive pricing for bulk supply
- ✔ Supply to Africa & Middle East markets
We provide:
- Mill Test Certificates (MTC)
- Third-party inspection (if required)
- Export documentation support
- Custom drum packing



