Tests on electric and optical fibre cables under fire conditions - Test for vertical flame spread of vertically-mounted bunched wires or cables. Category A F/R Ingestion-build-146508 surface area and mass concentration

surface area and mass concentration – are most relevant

and which exhibit properties of acoustic protection

and associated processes that might affect the people who use – directly or indirectly

Editorial updates throughout for clarity

Tests on electric and optical fibre cables under fire conditions - Test for vertical flame spread of vertically-mounted bunched wires or cables. Category A F/R Ingestion-build-146508 surface area and mass concentration1 Scope The series of International Standards covered by Parts 3 10, 3 21, 3 22, 3 23, 3 24 and 3 25 of IEC 60332 specifies methods of test for the assessment of vertical flame spread of vertically mounted bunched 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