What is Fire Resistant Cable? What is PH120 & What is PH30?

Views: 86 Author: Publish Time: 2024-03-16

What is Fire Resistant Cable? What is PH120? What is PH30?

When carrying out a fire alarm installation, all materials must be fire resistant and compliant. This includes everything, as well as the cabling that is used. The British Standards recommend the type of cabling used based on fire resistance testing. The most popular cables used in fire alarm installation are PH30 and PH120.

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What is Fire Resistant Cable ?

These cables are enhanced fire resistant, which means they have been explicitly developed for specific scenarios. Some buildings would require a more extended fire alarm system activation, and these cables are ideal for those fire alarm installations. For example, more significant buildings may involve a multi-phase evaluation process, so the fire alarm must operate much longer.

The cables are tested by being placed in a direct flame and timed until the circuit breaks. From this experiment, they can work out the length of time that cable can survive in immediate heat situations, typically around 830°C. The failure point is when the cable does not maintain the voltage or break. The cables are then assigned a figure based on the number of minutes they survived, with 120 being the most.

These enhanced fire-resistant cables are ideal for places like:

· Hotels

· Shopping Centres

· Theatres

· Cinemas

· Railway Stations

· Offices

· Schools

· Airports

· Hospitals

What is PH120 cable ?

PH120 is the cable suitable for indoor fire alarm installations where the circuit must be maintained for up to 120 minutes—made with high-performance silicone rubber and superior low smoke zero halogen materials.

What is PH30 cable ?

PH30 is the cable suitable for indoor fire alarm installations where the circuit must be maintained for up to 30 minutes—made with high-performance silicone rubber and superior low smoke zero halogen materials.

The different cable test time

PH30 is a standard version suitable for indoor fire alarm installations where the circuit must be maintained for up to 30 minutes, 

while PH120 is an enhanced version suitable for indoor fire alarm installations where the course must be held for up to 120 minutes. 

Both PH30 and PH120 are made with plain annealed flexible copper as conductor, high-performance silicone rubber as insulation, and superior low smoke, zero halogen materials as an outer jacket.

The different cable structure

The only difference is that PH30 is shielded with PET Foil and Aluminum Foil, but PH120 is shielded with Fibre Glass Tape and Aluminum Foil which performs much better while burning the fire. 

For the available PH30 and PH120, we have 2 Core, 3 Core, 4 Core, and 1mm2, 1.5mm2, 2.5mm2, and 4mm2. For the available packages of PH30 and PH120, we have 100M in Roll, 200M in Roll, and 500M in Wooden Spool. 

The most popular choices are PH30 2 Core 1mm2 and PH120 2 Core 1mm2. If you are interested in receiving our price list and datasheets, please get in touch with us by email or chat on WhatsApp. 

Even we can provide short free samples before you place an order from us. In order to guarantee the stable quality of our fire-resistant cables, we invested more than 15 thousand dollars in building up the fire testing chamber in our factory in 2019. 

We can provide the related testament on PH30 and PH120 under our customers' standard of BS EN 50200 testing method. If you are interested, you can visit our youtube channel to watch the fire testing video.

▶️ https://youtu.be/mkLssjw4Epo

PH30 fire cable test footage - How to test fire alarm cable

EN50200 PH120 Fire Resistance Cable fire test

Power-limited fire alarm cable is used in the 3 main components of the fire alarm system.