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BS6724 Cable

British-Standard BS6724 cable

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Thermosetting insulated armoured cables - 600/1000V to 1900/3300V - with low emission of smoke and corrosive gases when affected by fire. Manufactured in accordance with British Standard BS6724

This Standard specifies requirements for armoured power supply cables with Cross-Linked Polyethylene (XLPE), Ethylene Propylene Rubber (EPR), or thermosetting polyolefin insulation with an LSZH sheath for use in public areas where there is a need to reduce the risk of harmful smoke and fumes when exposed to fire. Cables manufactured in accordance with BS6724 produce low levels of smoke and corrosive gas when exposed to fire than comparative cables manufactured in accordance with low voltage armoured cable BS5467 and traffic signal cable to BS6346.

BS6724 Cable construction

  600/1000V 1900/3300V
Single core Stranded copper (Class 2) or solid aluminium (Class 1)
Two-core Stranded copper (Class 2) or solid aluminium (Class 1) N/A
Three-core Stranded copper (Class 2) or solid aluminium (Class 1)
Four-core Stranded copper (Class 2) or solid aluminium (Class 1) N/A
Five-core Stranded copper (Class 2) N/A
Multicore auxiliary-core Stranded copper (Class 2) N/A
Insulation GP8, GP6 or EI5
Bedding Extruded layer of polymeric material compatible with the operating temperature of the cable. HCI levels are not to exceed 0.5%
Single core Plain aluminium wire
Two-core and above Galvanised steel wire
Outersheath Extruded layers of compatible polymeric material conforming to the requirements of LTS 1 specified in BS7655. HCI levels are not to exceed 0.5%
BS6724 cable can sometimes be referred to by its construction in international markets - XLPE/LSZH/SWA/LSZH for multicore cables.

BS6724 cable supplier

BS6724 cable core identification

The Standard specifies the following core colour identification system:

Single core Brown or Blue
Two-core Brown and Blue
Three-core Brown, Black and Grey
Four-core Blue, Brown, Black and Grey
Five-core Green/Yellow, Blue, Brown, Black and Grey

Due to mechanical protection provided by their armours, cables manufactured to BS6724 are suitable for applications in industrial wiring and mains distribution where there is a risk of mechanical damage and for direct burial.
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The Cable Lab®

UKAS-accredited specialist cable testing laboratory

About Eland Cables

The Cable Lab® our in-house cable testing facility, is UKAS-accredited to ISO 17025, which is the single most important standard for calibration and testing laboratories around the world. Accreditation to this international standard demonstrates our laboratory's technical competence and the accuracy of its results.

For our customers, it means peace of mind. They can have full confidence in the quality of our products and can demonstrate due diligence in selecting their cable supplier.

Our customers can also rely on the Cable Lab's services for an independent, objective and comprehensive quality assessment of cables procured from third parties.


About Eland Cables

About Eland Cables

Established in 1975, Eland Cables is a supplier of power, data, instrumentation and control cables and cable accessories to the world's most demanding industries and to some of its most prestigious projects. Our reputation is built on an unswerving focus on quality, technical expertise and customer service.


Our focus on quality has resulted in our in-house specialist cable testing facility securing the ISO 17025 accreditation. This certifies the competence, impartiality and performance capability of our laboratory and its evaluations. In turn, it means peace of mind for our customers with regard to the quality of the cables they source from us.

Expert tecHnical support

Our highly-qualified technical team is on hand to provide technical support with all aspects of cable selection, technical specification, regulatory requirements, and bespoke cable design and manufacture.

Complete Cable Solutions

We are a key contributor to projects in over 100 countries every year, adding value through comprehensive technical support, reliable logistics, innovative solutions, and a customer-centric approach.