TFFN wire (Thermoplastic Flexible Fixture Nylon) is among the most commonly used electrical wires in the U.S. Its combination of flexibility, durability, and affordability makes it ideal for building and manufacturing environments.
Construction
TFFN wire consists of a stranded copper conductor, PVC insulation, and a nylon jacket. The nylon layer increases abrasion and chemical resistance, making it easier to pull through conduits without damaging insulation.
Common Ratings
- Voltage: 600V
- Temperature: Up to 90°C in dry locations
- Environment: Suitable for indoor dry installations only
Key Benefits
- Excellent flexibility for routing through tight spaces
- Resistant to oil, gasoline, and abrasion
- Available in multiple colors and gauges for easy identification
Applications
- Lighting fixtures and electrical panels
- Control circuits
- Internal wiring of equipment
- Machine tools and appliances
Comparison with THHN Wire
TFFN and THHN share many traits, but THHN can handle higher heat and is often used where dual ratings (THHN/THWN) are required. TFFN is lighter, more flexible, and ideal for fixture wiring where moisture is minimal.
Choosing the Right Source
Purchasing from a reliable distributor ensures compliance with UL listings and consistent performance. Imperial Wire & Cable sources TFFN wire from trusted manufacturers, offering competitive pricing and quick delivery.
Bottom Line
TFFN remains a dependable choice for everyday wiring needs. When properly selected, it delivers excellent performance and safety at a reasonable cost.