What is the BS 6387 Fire Resistant Tests?

Once all the burning, water spraying, and shaking has been completed, a cable can qualify for one of thefollowing letter symbols:

A resistance to fire alone, at 650 °C for 3 h
B resistance to fire alone, at 750 °C for 3 h
C resistance to fire alone, at 950 °C for 3 h
S resistance to fire alone, at 950 °C for 20 min
W resistance to fire and water, at 650 °C for 30 min
X resistance to fire and mechanical shock, at 650 °C
Y resistance to fire and mechanical shock, at 750 °C
Z resistance to fire and mechanical shock, at 950 °C

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