What does the “CWZ” classification mean for international fire cables?

Q: What does the “CWZ” classification mean for international fire cables?

Mainly used in British Standards (BS 6387), this is a “Gold Standard” test for fire cables: C: Resistance to fire alone ($950℃ for 3 hours). W: Resistance to fire and water (simulating sprinkler systems). Z: Resistance to fire and mechanical shock (simulating falling debris). A CWZ-rated cable ensures the highest level of survivability in a collapsing building environment.

Question

What does the &#8220;CWZ&#8221; classification mean for international fire cables?

Accepted Answer

Mainly used in British Standards (BS 6387), this is a &#8220;Gold Standard&#8221; test for fire cables:
C: Resistance to fire alone ($950℃  for 3 hours).
W: Resistance to fire and water (simulating sprinkler systems).
Z: Resistance to fire and mechanical shock (simulating falling debris).
A CWZ-rated cable ensures the highest level of survivability in a collapsing building environment.