DS EN 50289-4-12:2004 Communication Cables - Specifications For Test Methods - Part 4-12: Environmental Test Methods - Vertical Flame Spread Test On Bunched Small Communication Cables Deals with small communication cables with a diameter equal or less than 14 mm, mounted on a test scale in bundles in order to obtain a total normal volume of non-metallic material equal to 0,5 l/m of