What is the BS 4066-3 Fire test on bunched cables ?

BS 4066-3 Fire test on bunched cables - Standard

BS 4066-3: Tests on electric cables under fire conditions Tests on bunched wires or cables.

BS 4066-3 Fire test on bunched cables – Sample requirement

Sample size: 3.5m
Precondition: Test sample shall be conditioned at a temperature of (20±10)℃ for at least 16 h before commencing the test. The test pieces shall be dry.

BS 4066-3 Fire test on bunched cables – Requirement

The maximum extent of the charred shall be less than 2.5m (Refer to BS 6853 test standard).

BS 4066-3 Fire test on bunched cables - Reference Standard

-  BS 6853: Code of practice for fire precautions in the design and construction of passenger carrying trains.
-  BS ISO 5659-2 Plastics - Smoke generation - Determination of specific optical density
-  BS 6387, Specification for performance requirements for cables required to maintain circuit integrity under fire conditions.
-  BS 476-6, Fire tests on building materials and structures - Part 6: Method of test for fire propagation for products.
-  BS 476-7, Fire tests on building materials and structures - Part 7: Method of test to determine the classification of the surface spread of flame of products.
-  BS 4066-3, Tests on electric cables under fire conditions - Part 3: Tests on bunched wires or cables.
-  BS 5438:1989, Methods of test for flammability of textile fabrics when subjected to a small igniting flame applied to the face or bottom edge of vertically oriented specimens.
-  BS 6387, Specification for performance requirements for cables required to maintain circuit integrity under fire conditions.

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