Public building estates use a lot of precautions when it comes to peoples safety. They use security arrangements such as a secure perimeter, trained security
But how do these cables
- Can this type of cable resist high temperatures? - Actually no, has the same melting point as any other cable.
- Will the cable not get
damagesby the fire? - No, a fire rated cable will still need to be replaced after a fire spread.
How It Actually Works
The way fire rated cable is designed, is to continue working even when it is exposed to direct flame. This is accomplished by wrapping each of the conductors in Mica tape. After the insulation layer and cable sheath have melted off the Mica tape will remain, keeping the conductors safe, and allowing electrical flow. It also prevents the conductors from shorting between each-other and the earth. The estimated average runtime of the fire rated cable while exposed to direct flame is around 2 hours.
Why is This Important
A good example of how fire rated cables can save lives is the recent Dubai Torch Tower fire. There were no reports of death's or injuries because the elevators of the tower continued working even after it was caught ablaze. It allowed all residence even from the highest floors to evacuate safely and quickly. And even after the fire was extinguished there was said to have been some electrical devices still functioning.
Fire rated cable is a great