Should cables installed inside cable trays be flame-retardant
Cables are required to be flame retardant in accordance with BS EN 60332-1-2, or installed within containment having the necessary resistance to flame propagation, to the relevant standards identified in Regulation 527. Surfaces should be coated with fire-retardant paint to slow flame spread and increase heat resistance. When cable trays pass through walls or floors, seal openings using fire-rated penetration sealing materials.
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