Tests on electric and optical fibre cables under fire conditions - Part 3-23: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category B
The series of International standards covered by Parts 3-10, 3-21, 3-22, 3-23, 3-24 and 3-25 ofIEC 60332 specifies methods of test for the assessment of vertical flame spread of verticallymountedbunched wires or cables, electrical or optical, under defined conditions.NOTE For the purpose of this standard, the term ""electric wire or cable"" covers all insulated metallic conductor cables used for the conveyance of energy or signals.The test is intended for type approval testing. The requirements for the selection of cables fortesting are given in annex A. The flame spread is measured as the extent of damage of the cable sample. This procedure may be used to