6491X Cable Explained
Your comprehensive guide to the single-core PVC cable for fixed wiring and its Low Smoke Zero Halogen (LSZH) alternative, 6491B. Find out where to buy and get the best trade prices here.
6491X cable is a single-core, PVC insulated, low voltage cable designed for fixed wiring. It is widely used in conduits, trunking, switchgear, and control panels. Manufactured to British Standard BS6004, it offers a reliable and cost-effective solution for distributing electricity in residential, commercial, and industrial settings. Its flexibility and straightforward installation make it a trusted choice for contractors and electricians. For fast delivery and to check our competitive 6491X cable price and current stock, contact our sales team today.
Technical Details and Capacity (Essential Buyer Information)
6491X Cable Specification and Key Features
6491X is built with quality materials to ensure performance and safety. Need to find a trusted 6491X stockist? We carry full inventory.
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- Conductor: Plain annealed copper (Class 1 solid or Class 2 stranded)
- Insulation: PVC (Polyvinyl Chloride) to BS6004
- Voltage Rating: 450/750V
- Temperature Rating: -15Β°C to +70Β°C
- Core Colours: Green/Yellow, Blue, Brown, Black, Grey, Red, White, Orange, Violet, Pink, Turquoise
- Standards Compliance: BS6004, BASEC approved, CE marked
It is flame-retardant and best suited for dry indoor environments, typically installed in conduit or trunking for mechanical protection.
What is the Diameter of 16mm 6491X? (Crucial for Conduit Sizing)
The 16mmΒ² 6491X cable has an approximate overall diameter of 7.4mm. This should not be confused with the conductorβs cross-sectional area of 16mmΒ², which refers to the copper core rather than the physical width of the cable. The diameter is an important consideration for conduit sizing, ensuring compliance with wiring regulations and safe installation.
What Amps Can 16mm 6491X Cable Carry? (Rating & Best Price)
The current-carrying capacity of 16mm 6491X depends on how it is installed.
Current Ratings (Approximate)
- Clipped Direct: around 94A
- In Conduit/Trunking: around 85A
Figures are based on the IET Wiring Regulations (BS 7671). Ambient temperature, grouping of cables, and thermal insulation can reduce these values, so the correct derating factors must always be applied during design. For bulk buying and the best cable deals, we recommend calling us directly for a quick quote.
Understanding 6491B (The LSZH Alternative)
What is 6491B Cable?
6491B cable is a single-core, LSZH insulated building wire made to BS7211. It has the same copper conductor construction as 6491X but provides enhanced fire safety due to its insulation.
Key Differences in Insulation
- 6491X: Uses PVC insulation (Standard)
- 6491B: Uses LSZH (Low Smoke Zero Halogen) insulation to BS7211
LSZH Applications & Performance
6491B is specifically chosen for environments where fire safety is a priority:
- Schools & Universities
- Hospitals & Healthcare Facilities
- Transport Hubs & Underground Rail
- Public Buildings with high foot traffic
Fire Performance: Low smoke and halogen-free, significantly reducing harm to people and equipment in fire situations compared to standard PVC. Ask us for the 6491B price and availability when you call!
Ready to Buy 6491X or 6491B Cable?
For the best trade prices, immediate stock checks, and rapid delivery quotes, speak directly to our experts.
Call Us for a Quick Price Quote Today
6491X vs 6491B β Key Differences
| Feature | 6491X Cable (PVC) | 6491B Cable (LSZH) |
|---|---|---|
| Insulation Material | PVC | Low Smoke Zero Halogen (LSZH) |
| Standard | BS6004 | BS7211 |
| Voltage Rating | 450/750V | 450/750V |
| Fire Performance | Standard PVC (Flame-retardant) | Low smoke, halogen-free (Enhanced Safety) |
| Applications | General wiring, standard conduit/trunking | Public buildings, safety-critical areas |
Frequently Asked Questions (F.A.Q.)
Can 6491X cable be used outdoors?
What sizes are available and where can I find the best cable price?
6491X is available from 1.5mmΒ² up to 630mmΒ² in multiple insulation colours. Call us today to confirm your required size is in stock and get the best trade price!
Is 6491X the same as tri-rated cable?
No, tri-rated cable has a higher temperature rating (up to +105Β°C) and multiple standard approvals (UL, CSA, BS). 6491X is designed for standard fixed wiring where tri-rated cable is not explicitly required.
Cable Services supply a wide range of products from leading brands, click here to see a sample range of cables that we can offer:
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Tel: + 44 (0) 1978 340 450
Email: sales@cableservices.co.uk
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We have invested in an automatic winding and measuring cable cutting machine at our Wrexham facility. This Β£90,000 investment reflects our commitment to offering an economically valuable and highly efficient service for our valued customers.
We are known for providing tailored solutions that meet the exact needs of our customers. We recognise the growing demand for a flexible service that eradicates waste and delivers cost efficiencies. The efficiency and precision of this new machine support the industryβs commitment to operational sustainability and allow us to pass on cost savings to our customers.
