FR/FRLS-H Single Core Wires for Industrial and Domestic Use
Currency Cables FR (Flame Retardant) and FRLS-H (Flame Retardant Low Smoke Halogen) Single Core Flexible Wires are engineered for safe residential, commercial, and institutional power distribution. Manufactured using 99.97% pure electrolytic grade, bright-annealed bare copper conductors bunched to Class 5 flexibility, each wire is insulated with high-grade, self-extinguishing PVC compound. Certified to IS 694 benchmarks, these wires are designed to suppress flame propagation, minimize toxic acid gas emissions, and maintain visibility during emergency evacuations.
Features & Key Benefits
High Oxygen & Temperature Index: Specially formulated insulation resists fire ignition, arrests flame propagation, and self-extinguishes instantly when the fire source is removed.
Low Smoke & Non-Toxic Emissions (FRLS-H): Emits transparent, non-toxic white smoke and minimal hydrochloric acid (HCl) gas (<20%) to safeguard human life and delicate electronics during fire accidents.
99.97% Pure Electrolytic Copper: Ultra-pure copper conductors keep electrical resistance low, minimize voltage drop, and save energy over continuous residential operation.
Anti-Rodent & Anti-Termite Protection: Compounded with specialized non-toxic additives that deter pests and rodents from chewing through conduit wiring.
Superior Flexibility for Conduit Pulling: Multi-strand Class 5 conductor design enables tight-radius bending without conductor breakage or outer insulation snapping.
Technical Specifications Overview
| Specification parameter | Standard Rating value |
|---|---|
| Voltage Grade (Uo/U) | Up to and including 1100 Volts (1.1 kV) |
| Standard Compliance | IS 694:2010 / IS 8130 (Conductors) / IS 5831 (Insulation) |
| Conductor Construction | High-conductivity electrolytic bright annealed bare copper (Class 5 flexible) |
| Cross-Sectional Range | 0.75 sq. mm to 16.0 sq. mm (Standard 90m & 180m box coils / project reels) |
| Critical Fire Safety Parameters | Oxygen Index > 29% |
Common Applications & Uses
- Internal concealed and surface conduit wiring for residential apartments and villas.
- Commercial towers, IT parks, retail shopping malls, and multiplexes.
- Critical public infrastructure, including hospitals, educational institutions, airports, and hotels.
- Distribution boards, circuit breakers (MCBs), control panels, and metering panels.
- Industrial control desk wiring, UPS systems, and power backup line installations.
Why Choose Currency Cables
Engineered with 99.97% pure electrolytic copper and high-oxygen-index FRLS-H polymers, Currency Single Core Wires deliver maximum current capacity, zero flame spread, and life-saving visibility under fire conditions, backed by 30+ years of manufacturing pedigree.
Frequently Asked Questions
FR (Flame Retardant): Designed with a high oxygen and temperature index to stop the spread of fire and self-extinguish when the flame source is removed.
FRLS-H (Flame Retardant Low Smoke Halogen): Includes all FR properties, but also reduces smoke emission to under 60% and restricts halogen gas emissions to under 20%. This preserves visibility and prevents choking acid gas inhalation during an evacuation.
0.75 sq. mm – 1.0 sq. mm: Standard indoor lighting points, fans, and exhaust circuits.
1.5 sq. mm: General power plug points (5A/6A), TV consoles, and auxiliary appliances.
2.5 sq. mm – 4.0 sq. mm: Dedicated power circuits (15A/16A) for air conditioners, geysers, refrigerators, and washing machines.
6.0 sq. mm – 10.0 sq. mm: Main incoming power feeders connecting the energy meter, main distribution board (DB), and heavy kitchen cooktops.
Low-grade, recycled copper has higher internal electrical resistance, which causes localized hot spots, energy loss, and insulation degradation inside concealed conduits. Currency Wires use 99.97% pure electrolytic grade copper to ensure minimal ohmic resistance, zero overheating under sustained load, and stable conductivity.
Yes. The Class 5 high-flex fine copper stranding and uniform polymer extrusion allow the wire to bend smoothly through 90-degree conduit elbows without skin rupture, conductor detachment, or kinking.
Standard Currency FR wires operate continuously at conductor temperatures up to 70°C, with HR-FR variants rated up to 85°C. Under emergency short-circuit conditions (up to 5 seconds), the cross-linked dielectric barrier withstands temperatures up to 160°C without melting or igniting.
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