Standards Development

Scope

This British Standard specifies requirements and test methods for the

construction and performance of cables that:

• have a thermosetting insulation of rated voltage 300/500 V;

• emit limited amounts of smoke (see 15.5) and corrosive gases when

subjected to relevant tests;

• are primarily intended for use in walls, partitions and building voids;

• have a screen that can carry the fault current required for a selected size

and type of protective device, that operates within a given time if the cable

is penetrated by a nail or similar fixing (see 16.4).

To achieve a satisfactory safety performance of the cable when installed, both

the selection of protective device and the maximum current rating is critical.

Purpose

The proposed amendment would:

1. Modify Clause 5, Conductors to remove reference to BS EN 13603.  And, replace with New Annex

2. Modify table 3, Schedule of tests, to include a similar entry to that in BS 7629-1:2015+A1:2019

3. Modify Clause 6.5 changing the test from BS EN 50267-2-1 to BS EN IEC 60754-3

4. Modify Clause 8.2 changing the test from BS EN 50267-2-1 to BS EN IEC 60754-3

5. Modify Clause 10.5 changing the test from BS EN 50267-2-1 to BS EN IEC 60754-3

6. Modify table 3 for clauses a mentioned in 3, 4, 5 above to reference BS EN IEC 60754-3

7. Add new clause 16.6 for corrosive and acid gas, with wording that the non-metallic materials shall be tested in accordance with BS EN IEC 60754-3 and that the results shall not exceed the levels in BS EN IEC 60754-3, Table A.2