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BS6387 Cable

BS6387 cable


British Standard BS6387 covers the performance requirements and test methods for cables required to maintain circuit integrity under fire conditions, It has been developed to assist installation designers with their assessment of the fire performance characteristics of various types of cables and their selection for specific applications. In particular, it covers the cables' ability to maintain circuit integrity against set time and temperature parameters.

BS6387 covers fire resistant cables with a voltage rating of 300/500V and 450/750V. It also covers mineral-insulated cables manufactured in accordance with BS6207.

BS6387 cable

BS6387 Cable categories

  Resistance to fire alone
Category A 650oC for 3 hours
Category B 750oC for 3 hours
Category C 950oC for 3 hours
Category D 950oC for 20 minutes (short duration)


  Resistance to fire with water (W)
Category X 650oC for 3 hours
Category Y 750oC for 3 hours
Category Z 950oC for 3 hours


For example, a cable meeting the requirements in terms of their ability to maintain circuit integrity for 3 hours at 950oC and also for 3 hours at 650oC when exposed to fire and water would be referred to as CWX.

Other tests covered under BS6387 include voltage tests on completed cables, tests for bending characteristics, tests for resistance to impact at ambient temperature, and tests for fire resistance characteristics.

Eland Cables is a leading supplier of cables designed to maintain circuit integrity under fire conditions, including our Firetec cables and a comprehensive range of mineral insulated copper cable manufactured in accordance with BS6387.


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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.