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BS7917 Cable

BS7917 Standard Cable

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Elastomer insulated fire resistant (limited circuit integrity) cables for fixed wiring in ships and on mobile and fixed offshore units manufactured according to British Standard BS7917.

British Standard BS7917 covers a wide range of cable types used in fixed wiring applications on ships and offshore units and complements BS6883, which also covers marine cables used for fixed wiring of lighting, power, control, instrumentation and propulsion circuits in ships and other offshore units up to and including 3.3kV without fire resistant circuit integrity. It sets out the constructional requirements and additional tests under fire conditions.

The purpose of producing BS7917 was to promote the use of cables with fire resistance in the event of fire.
BS7917 Cable supplier

BS7917 cable designation

As per BS6883, cables manufactured in accordance with BS7917 are designated according to their outersheath type.

BS6883 Type SW2 Heavy-duty enhanced oil-resisting, flame retardant, with reduced halogen gas emission
BS6883 Type SW3 Ordinary duty oil-resisting with low emission of smoke and corrosive gases when affected by fire
BS6883 Type SW4 Ordinary duty enhanced oil-resisting with low emission of smoke and gases when affected by fire

BS7917 also specifies the following fire resistance performance characteristics:

F0 Fire resistance for 3h at 750oC
F1 Fire resistance for 3h at 950oC

BS7917 cable construction

The construction of these cables follows the specifications set out in BS6883. In addition, BS7917 specifies the use of tape or tapes over the conductor or over the insulation in order for the cable to meet the relevant fire performance requirements.

Eland Cables is a leading supplier of cables to the marine & offshore industry, and our technical engineers have a wealth of experience in advising on cables manufactured in accordance with BS7917. Please contact us to discuss your specific project requirements.
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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.