Ledes Schedule 40 & 80 Rigid PVC Conduit - For Use With 90°C Wire

DONGGUAN, China - June 4, 2025 - PRLog -- As electrical systems face rising demands for heat resistance, current capacity, and long-term safety, one specification is becoming essential across codes and job sites: "For use with 90°C wire."

Ledes, a global supplier of PVC conduit solutions, proudly announces that its Schedule 40 conduit and Schedule 80 PVC Conduit products have been certified under UL 651 for use with 90°C-rated wire, helping contractors and engineers meet today's evolving system demands with confidence.

Why the 90°C Wire Rating Matters

With growing use of 90°C-rated conductors such as THHN and XHHW-2, electrical systems today must manage greater thermal loads than in decades past. These high-temperature conductors enable increased ampacity and energy efficiency, but only when installed within conduit that can withstand such conditions.

Failure to pair these wires with compatible conduit may lead to insulation degradation, structural warping, and ultimately, fire or system failure.

Inside the UL 651 90°C Compatibility Test

UL 651 defines rigorous standards for PVC Conduit and Fittings. Among its most important assessments is the 90°C wire temperature test, which evaluates whether a conduit can safely house conductors rated for 90°C without:

• Deforming under sustained heat
• Damaging wire insulation
• Losing mechanical or structural integrity

Passing this test means a conduit product meets critical NEC and UL safety requirements for high-temperature conductor installations.

Ledes Schedule 40 & 80 PVC Conduit

Both Schedule 40 and Schedule 80 PVC Conduit from Ledes are officially UL 651–certified for 90°C wire applications, ensuring full compliance with NEC codes and North American safety standards.

Key Features of Ledes Rigid PVC Conduit:

• UL 651 Certification for 90°C Wire

Safeguards against thermal degradation and supports high-capacity wiring.

• High Impact and Crush Resistance

Engineered to maintain form under mechanical stress and direct burial applications.

• Superior Flame Retardance and UV Stability

Allows easy wire pulling without insulation abrasion.

• Chemical and Corrosion Resistance

Compatible with a wide range of project specifications, from residential to heavy-duty commercial.

About Ledes

Ledes is a global manufacturer of PVC electrical conduit systems, offering a wide range of solutions including:

• Schedule 40 PVC Conduit (https://www.ledestube.com/ledes-schedule-40-pvc-electrica...)
• Schedule 80 Electrical Conduit (https://www.ledestube.com/ledes-schedule-80-pvc-electrica...)
• ENT (Electrical Nonmetallic Tubing)
• DB (Direct Burial) conduit
• Solar conduit and fittings
• Low smoke halogen-free (LSZH) conduit and fitting
• Communication conduit and fittings
• Medium-duty and Heavy-duty rigid and corrugated conduit and fittings

As the industry moves toward higher electrical performance and stricter safety standards, conduit UL651 certification for 90 °C wire plays an important role in ensuring that every installation meets the challenge of modern electrical systems.

Website: www.ledestube.com