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    6491 Single Core Cable

    Single-core cables are essential for fixed wiring installations, providing reliability, durability, and compliance with safety standards. The two main types, 6491X PVC and 6491B LSZH (Low Smoke Zero Halogen), are designed for different environments and safety needs. Understanding their differences helps in selecting the right cable for your project.

    6491B Single Core LSZH Cable

    6491B Single Core LSZH Cable (47)

    6491X Single Core PVC Cable

    6491X Single Core PVC Cable (53)

    6491B Single Core Conduit Cable 1.5mm LSZH Brown - 100m

    6491B Single Core Conduit Cable 1.5mm LSZH Brown – 100m
    2 in stock
    More available within 1 - 3 working days *
    SKU: 6491B1.5BR100
    £25.61
    6491B Single Core Conduit Cable 1.5mm LSZH Blue - 100m

    6491B Single Core Conduit Cable 1.5mm LSZH Blue – 100m
    3 in stock
    More available within 1 - 3 working days *
    SKU: 6491B1.5BL100
    £25.61
    6491B Single Core Conduit Cable 1.5mm LSZH Green / Yellow - 100m

    6491B Single Core Conduit Cable 1.5mm LSZH Green / Yellow – 100m
    2 in stock
    More available within 1 - 3 working days *
    SKU: 6491B1.5G/Y100
    £25.61
    6491B Single Core Conduit Cable 1.5mm LSZH Black - 100m

    6491B Single Core Conduit Cable 1.5mm LSZH Black – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B1.5BLK100
    £25.61
    6491B Single Core Conduit Cable 1.5mm LSZH Grey - 100m

    6491B Single Core Conduit Cable 1.5mm LSZH Grey – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B1.5GRY100
    £25.61
    6491B Single Core Conduit Cable 2.5mm LSZH Brown - 100m

    6491B Single Core Conduit Cable 2.5mm LSZH Brown – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B2.5BR100
    £41.86
    6491B Single Core Conduit Cable 2.5mm LSZH Blue - 100m

    6491B Single Core Conduit Cable 2.5mm LSZH Blue – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B2.5BL100
    £41.86
    6491B Single Core Conduit Cable 2.5mm LSZH Green / Yellow - 100m

    6491B Single Core Conduit Cable 2.5mm LSZH Green / Yellow – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B2.5G/Y100
    £41.86
    6491B Single Core Conduit Cable 2.5mm LSZH Black - 100m

    6491B Single Core Conduit Cable 2.5mm LSZH Black – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B2.5BLK100
    £41.86
    6491B Single Core Conduit Cable 2.5mm LSZH Grey - 100m

    6491B Single Core Conduit Cable 2.5mm LSZH Grey – 100m
    1 in stock
    More available within 1 - 3 working days *
    SKU: 6491B2.5GRY100
    £41.86
    6491B Single Core Conduit Cable 4mm LSZH Brown - 100m

    6491B Single Core Conduit Cable 4mm LSZH Brown – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B4.0BR100
    £64.09
    6491B Single Core Conduit Cable 4mm LSZH Blue - 100m

    6491B Single Core Conduit Cable 4mm LSZH Blue – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B4.0BL100
    £64.09
    6491B Single Core Conduit Cable 4mm LSZH Green / Yellow - 100m

    6491B Single Core Conduit Cable 4mm LSZH Green / Yellow – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B4.0G/Y100
    £64.09
    6491B Single Core Conduit Cable 4mm LSZH Black - 100m

    6491B Single Core Conduit Cable 4mm LSZH Black – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B4.0BLK100
    £64.09
    6491B Single Core Conduit Cable 4mm LSZH Grey - 100m

    6491B Single Core Conduit Cable 4mm LSZH Grey – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B4.0GRY100
    £64.09
    6491B Single Core Conduit Cable 6mm LSZH Brown - 50m

    6491B Single Core Conduit Cable 6mm LSZH Brown – 50m
    2 in stock
    More available within 1 - 3 working days *
    SKU: 6491B6.0BR50
    £45.11
    6491B Single Core Conduit Cable 6mm LSZH Brown - 100m

    6491B Single Core Conduit Cable 6mm LSZH Brown – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B6.0BR100
    £90.22
    6491B Single Core Conduit Cable 6mm LSZH Blue - 50m

    6491B Single Core Conduit Cable 6mm LSZH Blue – 50m
    2 in stock
    More available within 1 - 3 working days *
    SKU: 6491B6.0BL50
    £45.11
    6491B Single Core Conduit Cable 6mm LSZH Blue - 100m

    6491B Single Core Conduit Cable 6mm LSZH Blue – 100m
    Delivery usually within 1 - 3 working days *
    SKU: 6491B6.0BL100
    £90.22
    6491B Single Core Conduit Cable 6mm LSZH Green / Yellow - 50m

    6491B Single Core Conduit Cable 6mm LSZH Green / Yellow – 50m
    2 in stock
    More available within 1 - 3 working days *
    SKU: 6491B6.0G/Y50
    £45.11
    Single Core Cables: 6491X PVC and 6491B LSZH
    6491X PVC Cables

    6491X PVC cables are ideal for general fixed wiring. Electricians commonly use them in residential, commercial, and industrial settings for installations within conduits or trunking systems.

    Key Features
    • PVC Insulation:
      The PVC insulation offers strong mechanical protection against moisture, abrasion, and general wear. However, it releases smoke and toxic fumes during a fire.
    • Voltage Rating:
      These cables handle up to 450/750V, making them suitable for low-voltage power and lighting circuits.
    • Temperature Range:
      They perform well in environments up to 70°C, ensuring reliable operation indoors.
    • Colour Options:
      Available in multiple colours such as brown, blue, black, grey, and green/yellow, they allow easy identification of conductors.
    Applications
    • Conduit and Trunking Systems: Suitable for enclosed wiring in walls and ceilings.
    • Lighting and Power Circuits: Commonly used in both homes and businesses.
    • Internal Appliance Wiring: Safe for wiring within appliances when enclosed for protection.
    6491B LSZH Cables

    6491B LSZH cables prioritise safety by reducing smoke and toxic gas emissions during a fire. They are a better choice for environments where air quality is critical during emergencies.

    Key Features
    • LSZH Insulation:
      Unlike PVC, LSZH insulation minimizes harmful emissions during combustion. This feature improves visibility and reduces health risks during evacuation.
    • Voltage Rating:
      Rated for 450/750V, they are suitable for the same low-voltage applications as PVC cables.
    • Temperature Range:
      They operate in conditions up to 70°C, ensuring reliability in various environments.
    • Colour Options:
      The same colour coding as 6491X cables simplifies conductor identification.
    Applications
    • Public Buildings: Ideal for schools, hospitals, and offices where safety is critical.
    • Enclosed Spaces: Suitable for tunnels, basements, and transport hubs.
    • Fire-Sensitive Areas: Used in installations requiring reduced smoke and toxic emissions.
    Comparison: 6491X PVC vs. 6491B LSZH
    Feature 6491X PVC 6491B LSZH
    Insulation Material Polyvinyl Chloride (PVC) Low Smoke Zero Halogen (LSZH)
    Smoke and Fume Emissions Releases more smoke and toxic gases Emits minimal smoke and toxic gases
    Applications General-purpose wiring in conduit or trunking Environments needing reduced emissions during a fire
    Cost Economical Slightly higher for added safety
    Compliance with Standards

    Both 6491X and 6491B cables comply with BS EN 50525-2-31, ensuring their suitability for fixed wiring in the UK. Additionally, they meet the IET Wiring Regulations Eighteenth Edition BS 7671:2018+A2:2022, which ensures safety and performance in installations.

    Choosing the Right Cable

    To make the right choice:

    • Use 6491X PVC cables for general-purpose wiring where fire safety is not a primary concern.
    • Opt for 6491B LSZH cables in public spaces, enclosed areas, or locations where reducing smoke and toxic emissions is essential during a fire.
    Shop Single Core Cables at Electrical4Less

    At Electrical4Less, we stock a full range of Single Core Cables, including 6491X PVC and 6491B LSZH options. Our competitive pricing, fast delivery, and expert advice ensure you find the right cable for every project.

    Visit us online or stop by our Fulham trade counter for more information and support. We’re here to simplify your electrical needs






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