GOST IEC 60332-3-23-2011 Tests on electric and optical cables under fire conditions. Part 3-23. Flame spread of vertically-mounted bunched wires or cables. Category B
2011GOST IEC 60332-3-23-2011 Tests on electric and optical cables under fire conditions. Part 3-23. Flame spread of vertically-mounted bunched wires or cables. Category B