Fire class description

No demands. 

Cable spreads fire. 

A vertical 600 mm long cable will be burned with  

1 kW propane gas burner. Burning time is from 1 minute to 8 minutes, debending cable diameter.   

Old swedish testing method, where the cable is installed to a vertical tube. Liquid fuel will be burned below this tube. Testing method is no longer valid.  

Cables are installed to the vertical bunch in 3,5 m long ladder. The bunch will be burned from the bottom with 20 kW propane gas burner. The fire is not allowed to proceed over 2,5 m high and the cable bunch must be self-extinquishing. F4-class cables are used in places where fire spreading must be stopped. Mostly halogen freedom is supplementary demanding.

7 liter/m burning material, flame application time 40 minutes. (Over 35mm² installation front and rear of the ladder)

7 liter/m burning material, flame application time 40 minutes. (Under 35mm² installation front of the ladder)

3,5 liter/m burning material, flame application time 40 minutes.

1,5 liter/m burning material, flame application time 20 minutes.

0,5 liter/m burning material, flame application time 20 minutes.