Description
Asl 4mm Single Cable Black: High-Current Fixed Wiring
Single-core cables are fundamental building blocks in electrical installation, used extensively for internal wiring within buildings, distribution boards, and heavy equipment. This 4.0mm² single cable features a stranded copper conductor insulated with high-quality black PVC, providing a robust solution for high-current applications where substantial conductor size is essential .
The 4.0mm² conductor size offers significant current-carrying capacity, making this cable suitable for power circuits, main distribution runs, and high-power equipment supplies. The cable is intended for use in semi-flush exposed conduits and embedded conduits as well as in closed installation ducts, and is ideal for the internal wiring of appliances and apparatus .
Asl 4mm Single Cable Black: Key Specifications
| Specification | Details |
|---|---|
| Cable Type | Single-core insulated cable |
| Conductor Size | 4.0 mm² |
| Conductor Material | Plain annealed copper |
| Conductor Construction | Stranded copper (Class 2) |
| Number of Strands | 7 strands (7/0.85mm) |
| Insulation Material | PVC (Polyvinyl Chloride) |
| Insulation Colour | Black |
| Voltage Rating | 450/750V |
| Current Rating | 42 Amps |
| Resistance | 4.61 Ohm/km at 20°C |
| Maximum Operating Temperature | 70°C |
| Cable Code | 6491X |
| Standards | BS 6004, BS EN 50525-2-31, CE, RoHS |
| Applications | Power circuits, distribution wiring, switchgear, control gear |
| For use in | Conduits, trunking, light fittings, appliances, switchgear, control gear |
Asl 4mm Single Cable Black: Conductor Construction
The conductor is manufactured from plain annealed copper, chosen for its excellent electrical conductivity and ductility. For a 4.0mm² cable, the stranded construction typically consists of 7 strands of 0.85mm diameter wire for Class 2 stranded conductors .
This stranding offers several advantages for larger conductor sizes:
Flexibility: Even with the substantial cross-section, stranded construction provides manageable flexibility for installation around corners and into termination points
Handling: Easier to route and terminate than solid conductors of equivalent size
Termination: Provides excellent contact area in heavy-duty terminals and crimped lugs
Reliability: Stranded construction resists work-hardening and fatigue in fixed installations
Asl 4mm Single Cable Black: PVC Insulation
The black PVC insulation for this heavy-duty cable serves multiple critical functions :
Electrical Insulation: Provides excellent dielectric strength, preventing electrical leakage and ensuring safe containment of the live conductor at high currents. The maximum DC resistance is 4.61 Ohm/km at 20°C .
Mechanical Protection: The substantial insulation thickness protects the copper conductor from abrasion, impact, and damage during installation and service.
Colour Identification: The black insulation provides clear visual identification for specific functions such as phase conductors or neutral in certain applications.
Environmental Resistance: PVC offers good resistance to moisture, chemicals, and UV exposure (when installed within appropriate containment).
Temperature Rating: Rated for continuous operation up to 70°C, suitable for normal operating conditions in buildings.
Asl 4mm Single Cable Black: Current Ratings
The current-carrying capacity of 4.0mm² cable is rated at 42 Amps . This rating may vary based on installation method:
| Installation Method | Typical Current Rating |
|---|---|
| In conduit in thermally insulated wall | 32-35 Amps (de-rated) |
| In conduit on wall | 36-39 Amps (de-rated) |
| In free air | 42 Amps |
These ratings are typical at 30°C ambient temperature and may vary based on grouping with other cables, ambient temperature, and specific installation conditions. Reference should be made to the current edition of wiring regulations for final sizing.
Asl 4mm Single Cable Black: Applications
This heavy-duty single-core cable is suitable for numerous high-current applications :
Power Circuits: Used for radial power circuits and final sub-circuits supplying high-demand equipment, cookers, showers, and industrial machinery.
Distribution Wiring: Suitable for sub-main distribution circuits from consumer units to distribution boards in large premises.
Switchgear Connections: Provides connections within switchgear, control panels, and distribution boards where high-current conductors are required.
Industrial Installations: Wiring for factories, warehouses, and industrial plants where significant power distribution is required.
Control Gear: Used for internal wiring of control panels and electrical enclosures .
Light Fittings: Suitable for use in or on light fittings and inside appliances .
Fixed Protection Installation: Ideal for fixed, protected installations in accordance with wiring regulations.
Asl 4mm Single Cable Black: Voltage Rating
The 450/750V voltage rating indicates:
450V: Voltage to earth (phase to neutral/earth)
750V: Voltage between phases
This makes the cable suitable for standard single-phase and three-phase installations up to 750V, covering all normal domestic and commercial applications, including high-power circuits .
Asl 4mm Single Cable Black: Installation Considerations
Conduit and Trunking: This cable is designed for installation within conduit, trunking, or other approved containment systems that provide mechanical protection . It is intended for use in semi-flush exposed conduits and embedded conduits as well as in closed installation ducts.
Termination: Due to the large conductor size, appropriate termination methods are essential. Use suitable crimped lugs, heavy-duty terminals, or mechanical connectors designed for 4.0mm² conductors.
Bending Radius: The minimum bending radius should be observed to prevent damage to the conductor or insulation. Typically 3-4 times the cable diameter.
Stripping: Use appropriate cable stripping tools designed for larger conductors to remove insulation without nicking or damaging the copper strands.
Derating: When multiple cables are bunched together or run in thermal insulation, derating factors apply to the current-carrying capacity. Consult wiring regulations for guidance.
Support: For vertical runs, ensure the cable is adequately supported to prevent strain on terminations due to its weight.
Asl 4mm Single Cable Black: Quality and Compliance
This cable is manufactured to meet rigorous international standards:
BS 6004: British Standard for PVC-insulated cables for electric power and lighting
BS EN 50525-2-31: European standard for PVC-insulated cables
BASEC Approved: Premium versions carry BASEC approval for assured quality
CE Marking: Indicates compliance with relevant European directives
RoHS Compliance: Free from hazardous substances
ISO 9001: Quality management systems ensure consistent manufacturing standards
Asl 4mm Single Cable Black: Availability
This cable is typically available in various formats:
Per metre: Cut to your exact requirements for smaller projects
100m reels: Standard drum size for contractors and regular users
When ordering cut lengths per metre, you will receive one continuous piece of cable, not multiple sections.
Asl 4mm Single Cable Black: Storage and Handling
Store the cable in a clean, dry environment away from direct sunlight and chemicals that could degrade the PVC insulation. Reels should be stored upright or flat to prevent distortion. When paying out cable, ensure it is not kinked or twisted, which could damage the insulation or conductor.
When installed correctly within appropriate containment and in accordance with current wiring regulations, Asl 4mm Single Cable Black provides a safe, reliable, and high-capacity solution for power distribution and high-current applications in residential, commercial, and industrial settings.
