6242B Twin & Earth LSZH Cable — BS 7211:2012, BASEC Approved, 300/500 V Low Smoke Zero Halogen Domestic & Commercial Wiring Cable
Product Overview
The 6242B Twin & Earth LSZH cable is a premium-quality Low Smoke Zero Halogen (LSZH) fixed wiring solution, engineered specifically for installations where fire safety, low smoke emission, and freedom from toxic halogen fumes are critical. Manufactured to BS 7211:2012 standards, BASEC Approved, and certified under CE / ISO 9001, this cable is widely trusted across South Africa and beyond for use in homes, apartments, commercial buildings, public facilities, and any environment where fire, smoke, or toxic gases could threaten life, electrical systems, or valuable equipment.
Unlike standard PVC-insulated wiring, which can release dense smoke and corrosive, toxic fumes when exposed to fire, our LSZH construction ensures minimal smoke output and zero halogen gas emission — a vital safety feature for enclosed spaces such as corridors, stairwells, basements, and multi-storey buildings, where escape routes and visibility must remain clear during an emergency. In South Africa’s growing urban and commercial building sector, where fire safety regulations and insurance requirements are increasingly stringent, choosing LSZH wiring is not just a best practice — it is becoming an essential specification for new builds, renovations, and public infrastructure projects.
Key Features & Benefits
✅ LSZH Construction — Low Smoke, Zero Halogen: When exposed to flame, the cable emits very little smoke and no toxic or corrosive halogen gases. This preserves visibility, protects respiratory health, and reduces damage to sensitive electronics and metallic infrastructure — critical in shopping centres, hospitals, schools, and residential complexes across South Africa.
✅ Dual Twin & Earth Design: Combines two current-carrying conductors with a dedicated protective earth core in a single cable. Simplifies installation and ensures reliable earthing for lighting, power outlets, and general wiring.
✅ Solid & Stranded Copper Conductors: Sizes 1.0 mm² to 2.5 mm² feature solid copper for excellent electrical performance and ease of handling in standard installation work; sizes 4.0 mm² to 16.0 mm² use stranded copper for greater flexibility and durability in higher-power, heavier-duty circuits.
✅ Rigorous Compliance & Certification: Manufactured to BS 7211:2012, BASEC Approved, CE marked, and produced under an ISO 9001 quality management system — giving engineers, procurement officers, and installers full confidence in consistency and performance.
✅ Wide Installation Versatility: Suitable for fixed installations in dry or damp indoor environments. Can be clipped directly to surfaces, laid on cable trays, or run in free air where mechanical protection is adequate. For additional protection, it may also be installed inside conduit or trunking — making it ideal for everything from new housing developments in Gauteng and the Western Cape to commercial fit-outs in Durban.
✅ Robust Electrical & Thermal Ratings: Rated 300/500 V, with a continuous operating temperature range of -15°C to +90°C and a short-circuit temperature capacity of 250°C. Engineered to withstand the heat of South African summers while maintaining dependable performance year-round.
✅ Generous Bending Radius: Minimum bending radius of 8 × overall diameter, allowing neat, practical installation without compromising insulation or conductor integrity.
Technical Specifications
Parameter | Specification |
|---|---|
Product Type | 6242B Twin & Earth LSZH Wiring Cable |
Insulation / Sheath Material | Low Smoke Zero Halogen (LSZH) |
Voltage Rating | 300 / 500 V |
Standard | BS 7211:2012 |
Approvals | BASEC Approved, CE Marked, ISO 9001 Certified |
Conductor Material | High‑grade annealed copper |
Conductor Type | Solid: 1.0 mm² – 2.5 mm²; Stranded: 4.0 mm² – 16.0 mm² |
Operating Temperature | -15°C to +90°C (continuous) |
Short‑Circuit Temperature | Up to 250°C |
Minimum Bending Radius | 8 × overall cable diameter |
Core Colours | Twin cores + protective earth core (standard colour coding) |
Product Dimensions & Electrical Performance
Product Code | Cross‑Sectional Area (mm²) | Conductor Type | Overall Dimensions (W × D) (mm) | Current Capacity (A) | Max. Conductor Resistance @ 20°C (Ω/km) — Live / Neutral | Earth Core Resistance @ 20°C (Ω/km) | Standard Reel Lengths (m) | Typical Application |
|---|---|---|---|---|---|---|---|---|
6242B 1.0 | 1.0 | Solid | 5.0 × 9.2 | 19 | 18.1 | 18.1 | 100 | Standard lighting circuits |
6242B 1.5 | 1.5 | Solid | 5.3 × 9.7 | 24 | 12.1 | 18.1 | 50 / 100 | Heavy‑duty lighting circuits |
6242B 2.5 | 2.5 | Solid | 6.0 × 11.2 | 33 | 7.41 | 12.1 | 100 | Ring mains & socket outlets |
6242B 4.0 | 4.0 | Stranded | 6.7 × 12.6 | 45 | 4.61 | 12.1 | 100 | Higher‑load ring mains & power outlets |
6242B 6.0 | 6.0 | Stranded | 7.5 × 14.6 | 58 | 3.08 | 7.41 | 50 / 100 | Light‑duty stoves & geysers |
6242B 10.0 | 10.0 | Stranded | 8.8 × 17.5 | 80 | 1.83 | 4.61 | 50 / 100 | High‑capacity stoves & geysers |
6242B 16.0 | 16.0 | Stranded | 10.1 × 20.5 | 107 | 1.15 | 3.08 | 50 / 100 | Light commercial circuits & consumer units |
Note: All current capacity figures are for general guidance under standard installation conditions. Actual ratings may vary depending on installation method, grouping, ambient temperature, and cable depth — always perform calculations in accordance with the latest wiring regulations and local South African electrical codes.
Recommended Applications
The 6242B LSZH Twin & Earth cable is the ideal choice wherever fire safety is a priority — making it the preferred option for:
✅ Residential Installations: House wiring, apartment blocks, and housing developments — especially in multi‑storey complexes where smoke and fumes pose greater risk.
✅ Lighting & Power Circuits: From standard lighting and plug points through to dedicated circuits for geysers, stoves, and large appliances — matching South African household usage patterns perfectly.
✅ Commercial & Public Buildings: Offices, retail centres, schools, clinics, and public halls where occupant safety and equipment protection are specified by design engineers and insurers.
✅ Damp or Dry Indoor Locations: Suitable for installation in bathrooms, kitchens, and service areas, as well as standard dry rooms — provided it is not exposed to permanent water immersion or direct outdoor weather.
✅ Conduit, Trunking, Tray & Surface Wiring: Versatile enough to handle most common indoor wiring methods used in South African construction.
Not intended for: Direct burial underground, outdoor exposure without protection, or use in permanently wet environments such as swimming pool areas or external service connections — unless additional protection and suitable rated accessories are provided in accordance with local standards.
Why Choose the 6242B LSZH Range?
In modern electrical design, especially in densely populated or enclosed buildings across South Africa, fire safety is as important as electrical performance. When a fire breaks out, smoke and toxic fumes are often the greatest danger to life — and they can also severely damage switchgear, computers, and communications infrastructure. By choosing 6242B LSZH Twin & Earth cable, you get:
Life Safety First: Low smoke keeps escape routes visible; zero halogen means no corrosive or poisonous fumes.
Equipment Protection: Reduced risk of permanent damage to expensive electrical and IT systems during fire events — lowering repair and replacement costs.
Regulatory & Insurance Compliance: Meets international and local expectations for safer wiring, helping projects pass inspection and satisfy insurance requirements.
Proven Quality: BASEC approval and ISO 9001 manufacture mean consistent, traceable quality on every reel — critical for procurement teams managing large or public‑sector tenders.
Available in the most commonly used sizes, in convenient 50 m and 100 m reel lengths (with cut‑to‑length options on request), the 6242B LSZH range is ready to support projects from single house renovations to large housing and commercial developments throughout South Africa.
