What are FR, FRLSH, and Green wires?

Electrical wires are the backbone of any building's infrastructure. Because they transport power and signals, selecting the wrong type of wire poses significant risks. High-quality wires are not just about functionality; they are critical safety components designed to prevent accidents, specifically fire outbreaks.

To address environmental, health, and safety concerns, manufacturers have developed specific categories of wires. Below is a breakdown of the three major types:

1. FR Wires (Flame Retardant)

Primary Function: To prevent and stop the spread of fire.

FR wires are engineered to act as a barrier against fire during short circuits or electrical failures. Their main characteristic is their self-extinguishable property, meaning they do not allow a fire to propagate along the wire.

  • Oxygen Index: These wires have an Oxygen Index greater than 26%. Since air typically contains only 21% oxygen, these wires require a much higher concentration of oxygen to burn, effectively making them fire-resistant in normal conditions.
  • Temperature Resistance: They possess a Temperature Index greater than 2500, allowing them to withstand extreme heat without failing.

2. FRLSH Wires (Flame Retardant, Low Smoke, Low Halogen)

Primary Function: To maintain visibility and reduce toxic fumes during a fire.

While FR wires stop fire, FRLSH wires address the secondary dangers of fire: smoke and toxic fumes. Statistics show that over 80% of fire casualties are caused by smoke inhalation and the inability to escape due to poor visibility.

  • Visibility: These wires produce very little visible smoke, ensuring visibility remains up to 40%. This is crucial for helping trapped occupants find exits and allowing firefighters to navigate the building.
  • Application: Due to these safety features, FRLSH wires are standard in high-density areas such as high-rise buildings, hospitals, and schools where evacuation time is critical.

3. Green Wires (Eco-Friendly)

Primary Function: To provide safety while minimizing environmental impact.

Contrary to the name, "Green" refers to the eco-friendly nature of the wire, not necessarily its physical color. These wires are developed in response to global warming concerns and mandates by the Indian Green Building Council (IGBC).

  • Composition: They are manufactured using lead-free and non-hazardous raw materials.
  • Key Features: They combine the benefits of other wires (fire resistance, flame retardancy, low smoke) with ecological benefits. They are non-toxic, recyclable, energy-efficient, and provide shock protection.
Wire Type Full Form Key Characteristic Best Use Case
FR Flame Retardant Self-extinguishing; High Oxygen Index (>26%). General safety to prevent fire spread.
FRLSH Flame Retardant Low Smoke Low Halogen Emits minimal smoke; Ensures 40% visibility. High-rises, hospitals, schools, and public spaces.
Green Eco-Friendly Wires Non-toxic, lead-free, and recyclable. Sustainable buildings and environmentally conscious projects.


Conclusion

Wires are essential to both residential and commercial functionality. Choosing the correct wire is a dual responsibility: it ensures the immediate safety of people and property by preventing fires and aiding evacuation, and it supports long-term environmental sustainability through the use of eco-friendly materials.

Contact Phoenix Technologies, Bangalore 080-42100546, M : 7760459320

Back to blog

Leave a comment