BURY CABLE BS 6724 three-core stranded copper cable is intended for fixed 600/1000V power distribution. Its XLPE insulation, steel wire armour and LSZH outer sheath suit specifications requiring insulated copper conductors, mechanical protection and low smoke, halogen-free materials.
Typical project uses include building distribution feeders, plant-room connections and industrial power routes. For three-phase circuits, confirm the function of all three cores and the project's neutral and protective-earthing requirements. Select the circuit arrangement before choosing conductor size.
The dedicated three-core schedule lists 19 entries covering 1.5 to 400 mm². Starred entries use shaped stranded conductors, Class 2. The 25 mm² and 35 mm² sizes each have starred and unstarred rows with different overall diameters. Identify the required row when specifying the cable and accessories.
This page covers the three-core stranded copper version. The construction table includes broader family options, while the gallery includes single-core, multicore and five-core reference illustrations. Use the dedicated three-core schedule for product dimensions and confirm the exact insulation grade and supplied construction.
600/1000V rating for fixed low voltage power distribution.
Three stranded copper conductors, with strand counts and wire diameters listed in the parameter table.
XLPE insulated construction with an LSZH outer sheath; confirm the specified insulation compound for supply.
Steel wire armoured multicore construction, with nominal armour wire diameters listed by size.
Sizes from 3 × 1.5 mm² to 3 × 400 mm², with layer thicknesses, overall diameters and approximate weights.
Original starred designation retained for shaped stranded conductors, Class 2.
Separate starred and unstarred entries at 25 mm² and 35 mm² support precise size and accessory selection.
| 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 |
| 3×1.5 | 7/0.53 | 0.6 | 0.8 | 0.9 | 1.3 | 12.6 | 340 |
| 3×2.5 | 7/0.67 | 0.7 | 0.8 | 0.9 | 1.4 | 14.1 | 408 |
| 3×4 | 7/0.85 | 0.7 | 0.8 | 0.9 | 1.4 | 15.3 | 498 |
| 3×6 | 7/1.04 | 0.7 | 0.8 | 0.9 | 1.4 | 16.6 | 600 |
| 3×10 | 7/1.35 | 0.7 | 0.8 | 1.25 | 1.5 | 19.5 | 915 |
| 3×16 | 7/1.70 | 0.7 | 0.8 | 1.25 | 1.6 | 21.6 | 1130 |
| 3×25 | 7/2.14 | 0.9 | 1 | 1.6 | 1.7 | 26.7 | 1710 |
| 3x25* | 7/2.14 | 0.9 | 1 | 1.6 | 1.7 | 23.6 | 1710 |
| 3×35 | 7/2.52 | 0.9 | 1 | 1.6 | 1.8 | 29.4 | 2100 |
| 3×35* | 7/2.52 | 0.9 | 1 | 1.6 | 1.8 | 25.7 | 2100 |
| 3×50* | 19/1.78 | 1.0 | 1 | 1.6 | 1.8 | 28.5 | 2450 |
| 3×70* | 19/2.14 | 1.1 | 1 | 1.6 | 1.9 | 32.2 | 3120 |
| 3×95* | 19/2.52 | 1.1 | 1.2 | 2.0 | 2.1 | 37.0 | 4310 |
| 3×120* | 37/2.03 | 1.2 | 1.2 | 2.0 | 2.2 | 40.4 | 5160 |
| 3×150* | 37/2.25 | 1.4 | 1.4 | 2.5 | 2.3 | 45.5 | 7160 |
| 3×185* | 37/2.52 | 1.6 | 1.4 | 2.5 | 2.4 | 49.8 | 8600 |
| 3×240* | 61/2.25 | 1.7 | 1.4 | 2.5 | 2.6 | 55.1 | 10755 |
| 3×300* | 61/2.52 | 1.8 | 1.6 | 2.5 | 2.7 | 60.2 | 13080 |
| 3×400* | 61/2.85 | 2 | 1.6 | 2.5 | 2.9 | 66.6 | 15810 |
*Shaped stranded conductor (class 2)
Confirm 600/1000V, three cores, stranded copper, conductor size and required conductor shape. Identify the exact starred or unstarred row at 25 mm² and 35 mm².
Confirm core functions, neutral requirements and the protective-earthing arrangement against the circuit design. Three cores alone do not determine whether the cable meets every circuit requirement.
Select conductor size for current capacity, voltage drop, short-circuit duty, installation method, ambient temperature and grouping. The dimensional table does not provide current ratings.
Use the selected row's overall diameter and armour wire size for gland and termination selection. Review armour bonding, support, pulling conditions and available termination space.
The technical table lists bending radii of 6 times overall diameter for 1.5-16 mm² and 8 times overall diameter for 25 mm² and above. Confirm the requirements for the supplied cable and installation.
Check sheath and environmental requirements for outdoor, ducted, buried or wet routes. Confirm direct-burial suitability; LSZH alone does not establish UV, oil or water resistance.
For enquiry, provide the exact schedule entry, total length, drum lengths, sheath requirements, installation environment, project specification, required test documents and delivery location.
BS 6724 Two Core Copper LSZH Armoured Cable, 600/1000V
A two-core option with its own conductor-shape designations and dimensional schedule.
BS 6724 Four Core LSZH Armoured Cable, 600/1000V
A four-core alternative; confirm the required circuit functions and use its separate technical data.
BS 6724 Single Core AWA LSZH Cable, 600/1000V
A single-core construction with different armour and installation requirements; refer to its own conductor schedule.
It is intended for fixed 600/1000V power distribution in building, infrastructure and industrial installations. For a three-phase circuit, confirm the core functions, neutral requirements and protective-earthing arrangement against the project design.
The dedicated table contains 19 entries from 1.5 to 400 mm². The original asterisk identifies a shaped stranded conductor, Class 2. Specify the required shape and schedule row when requesting a quotation.
Each size has a starred and an unstarred entry. At 25 mm² the listed overall diameters are 26.7 mm and 23.6 mm; at 35 mm² they are 29.4 mm and 25.7 mm. The smaller diameter in each pair is the starred shaped-conductor entry. Use the exact selected row for accessory sizing.
The existing gallery includes single-core, multicore and five-core family reference illustrations. They do not replace a product-specific construction drawing. Confirm the three-core stranded copper design, insulation compound and dimensions in the approved supply specification.
Confirm the burial or duct arrangement, ground conditions, water exposure, sheath suitability and installation requirements for the supplied cable. Armour provides mechanical protection, but does not establish suitability for every underground route.
The technical table lists flame-retardance, halogen-content and smoke-density requirements. These do not establish a circuit-integrity classification or fire survival duration. Where circuit integrity is required, obtain product-specific test evidence for a suitable fire resistant construction.
Provide 600/1000V, three stranded copper cores, the conductor size and shape, total length and drum lengths. Include installation conditions, sheath requirements, project standards, required documents and delivery details so the quotation identifies the intended construction.
