BURY CABLE BS 6724 two-core stranded copper cable is intended for fixed 600/1000V power distribution and suitable two-core control circuits. XLPE insulation, steel wire armour and an LSZH outer sheath suit project specifications requiring insulated copper conductors, mechanical protection and low smoke, halogen-free materials.
Typical settings include commercial buildings, plant rooms, industrial facilities and infrastructure installations. Cable trays, ducts and underground routes require selection against the actual environment, installation method and project requirements. Confirm any direct-burial requirement before ordering.
The dedicated two-core schedule lists sizes from 1.5 to 400 mm². Starred rows identify D-shaped stranded conductors; 25 mm² and 35 mm² each have starred and unstarred entries with different listed diameters. Specify the exact row and conductor shape for accessories and installation planning.
This page covers the two-core stranded copper version. The construction table includes broader family options, and the gallery shows three-core reference illustrations, including aluminium-conductor diagrams. Use the two-core schedule for this product and confirm the exact insulation grade and supplied construction in the purchase specification.
600/1000V rating for fixed low voltage power and suitable control circuits.
Two stranded copper conductors, with strand counts and wire diameters listed in the parameter table.
XLPE insulated construction; confirm the specified insulation compound for the supplied cable.
Steel wire armour, with nominal wire diameters shown for each schedule entry.
LSZH outer sheath for projects specifying low smoke and halogen-free cable materials.
Listed sizes from 2 × 1.5 mm² to 2 × 400 mm², with layer thicknesses, overall diameters and approximate weights.
Starred entries retain the original D-shaped stranded conductor (Class 2) designation.
| Conductor | Solid Aluminum or Annealed Copper conductor, circular or shaped, Class 2 to BS EN60228. |
| Insulation | XLPE (Cross-Linked Polyethylene) Type GP 8 conforming to BS 7655-1.3 or type GP 6 conforming to BS 7655-1.2. |
| Colour Code | 1 Core : Brown or Blue |
| 2 Cores : Brown, Blue | |
| 3 Cores : Brown, Black, Grey | |
| 4 Cores : Blue, Brown, Black, Grey | |
| 5 Cores : Green/Yellow, Blue, Brown, Black, Grey | |
| Above 5 Cores : White Cores with black numbers | |
| Bedding | The bedding shall consist of an extruded layer of polymeric material consistent with the operating temperature of the cable. |
| Armour | Single Core : AWA (Aluminum Wire Armour) |
| Multi Core : GSWA (Galvanized Steel Wire Armour) | |
| Outer Sheath | LSOH (Low Smoke Zero Halogen),conforming to BS 7655-6.1. |
| Voltage rating | 600/1000V |
| Temperature rating | 0°C to +90°C |
| Bending radius | 1.5mm² to 16mm² : 6 x overall diameter |
| 25mm² and above : 8 x overall diameter | |
| Flame retardant | BS EN 60332-1-2 ; BS EN 60332-3-24:2009 |
| Halogen free | BS EN 60754-1 |
| Smoke density | BS EN 61034-2 |
| Nominal Cross-sectional Area | Strand Type | Nominal Insulation Thickness | Nominal BeddingThickness | Nominal Steel Wire Armor dia. | Nominal Sheath Thickness | Approx. Overall Diameter | Aprrox. Weight |
|---|---|---|---|---|---|---|---|
| mm² | No./mm | mm | mm | mm | mm | mm | kg/km |
| 2×1.5 | 7/0.53 | 0.6 | 0.8 | 0.9 | 1.4 | 12.1 | 320 |
| 2×2.5 | 7/0.67 | 0.7 | 0.8 | 0.9 | 1.4 | 13.6 | 365 |
| 2×4 | 7/0.85 | 0.7 | 0.8 | 0.9 | 1.4 | 14.7 | 440 |
| 2×6 | 7/1.04 | 0.7 | 0.8 | 0.9 | 1.4 | 15.9 | 470 |
| 2×10 | 7/1.35 | 0.7 | 0.8 | 0.9 | 1.5 | 18.0 | 800 |
| 2×16 | 7/1.70 | 0.7 | 0.8 | 1.25 | 1.5 | 20.4 | 900 |
| 2×25 | 7/2.14 | 0.9 | 0.8 | 1.25 | 1.6 | 24.1 | 1240 |
| 2x25* | 7/2.14 | 0.9 | 0.8 | 1.25 | 1.6 | 20.4 | 1240 |
| 2x35 | 7/2.52 | 0.9 | 1 | 1.6 | 1.7 | 27.7 | 1710 |
| 2x35* | 7/2.52 | 0.9 | 1 | 1.6 | 1.7 | 23.3 | 1710 |
| 2×50* | 19/1.78 | 1.0 | 1 | 1.6 | 1.8 | 25.8 | 1800 |
| 2×70* | 19/2.14 | 1.1 | 1 | 1.6 | 1.9 | 29.0 | 2320 |
| 2×95* | 19/2.52 | 1.1 | 1.2 | 2.0 | 2.0 | 33.0 | 3150 |
| 2×120* | 37/2.03 | 1.2 | 1.2 | 2.0 | 2.1 | 36.1 | 3880 |
| 2×150* | 37/2.25 | 1.4 | 1.2 | 2.0 | 2.2 | 39.3 | 4820 |
| 2×185* | 37/2.52 | 1.6 | 1.4 | 2.5 | 2.4 | 44.7 | 5920 |
| 2×240* | 61/2.25 | 1.7 | 1.4 | 2.5 | 2.5 | 49.0 | 7300 |
| 2×300* | 61/2.52 | 1.8 | 1.6 | 2.5 | 2.6 | 53.5 | 8770 |
| 2×400* | 61/2.85 | 2 | 1.6 | 2.5 | 2.8 | 59.0 | 10905 |
* D-Shaped stranded conductor (class 2)
Confirm the voltage, two-core circuit requirement, copper conductor size and conductor shape. For 25 mm² and 35 mm², identify the exact starred or unstarred entry; do not interchange the listed cable diameters.
Size the circuit for current capacity, voltage drop, short-circuit duty, ambient temperature and grouping. The dimensional table does not provide a current rating.
Confirm core functions, the protective-earthing arrangement, armour bonding, glands and terminations. Match accessory dimensions to the selected construction and table row.
The technical table states bending radii of 6 times overall diameter for 1.5-16 mm² and 8 times overall diameter for 25 mm² and above. Confirm installation bends, pulling conditions and termination space.
Check route-specific sheath protection and environmental requirements for ducts, outdoor runs, buried routes or wet conditions. LSZH alone does not establish UV, oil or water resistance.
Where circuit integrity is required, specify the applicable test and obtain evidence for the supplied product. Flame retardance and LSZH properties do not by themselves establish a fire survival time.
For quotation, provide the exact schedule entry, total length, drum lengths, sheath requirements, installation method, project standards, required documents and delivery location.
BS 6724 Three Core Copper LSZH Armoured Cable, 600/1000V
A three-core option with a separate conductor schedule and cable dimensions.
BS 6724 Four Core LSZH Armoured Cable, 600/1000V
A four-core alternative; select against its own circuit arrangement and technical data.
BS 6724 Single Core AWA LSZH Cable, 600/1000V
A single-core AWA construction with different armour and installation requirements.
The dedicated table contains 19 entries covering conductor sizes from 1.5 to 400 mm². The 25 mm² and 35 mm² sizes each have two entries. Select the required row rather than assuming one cable diameter per conductor size.
The original table note defines an asterisk as a D-shaped stranded conductor, Class 2. Keep this designation in the quotation and approved cable schedule so the intended conductor shape is clear.
Each of these sizes has a starred and an unstarred entry, with different listed overall diameters. The starred entry is the D-shaped version. Confirm the required shape and use that exact row when selecting glands and planning the route.
Confirm the burial or duct arrangement, ground conditions, water exposure, mechanical protection and applicable installation requirements for the supplied cable. The presence of armour and an LSZH sheath is not a blanket approval for every underground route.
The technical data on this page lists flame-retardance, halogen-content and smoke-density requirements. It does not establish a circuit-integrity classification or fire survival duration. Where required, obtain product-specific test evidence for a suitable fire resistant construction.
Provide 600/1000V, two stranded copper cores, the conductor size and required shape, length, drum lengths, installation method and project specification. Add sheath options, required test documents and delivery details so the quoted cable matches the installation.
