UL3257 High Temperature High Voltage Silicone Lead Wire – BYC Cables

Product Overview

Feature Specification
Standard UL 3257
Rated Voltage 10,000V Alternating Current (AC) / 25,000V Direct Current (DC)
Temperature Range -60°C to +250°C (-76°F to +482°F)
Conductor Type Nickel-plated Copper (High Oxidation Resistance)
Insulation Material Silicone Rubber (Extra Thick Heavy-Duty Wall)
Standard Color Iron Red (Oxide Red)
Applications High-performance ignition systems for gas appliances, professional industrial burners, and high-voltage pulse generator equipment.

Technical Parameter Table

American Wire Gauge (AWG) Conductor Construction (Number x Diameter in mm) Conductor Diameter (mm) Insulation Thickness (mm) Finished Outside Diameter (mm) Maximum Conductor Resistance at 20°C (68°F) (Ohm/km)
22 7 x 0.25 0.76 2.0 4.8 59.4
20 7 x 0.30 0.95 2.0 5.0 36.7
18 7 x 0.40 1.20 2.0 5.3 23.2
16 7 x 0.50 1.50 2.0 5.5 14.6
14 41 / 0.254 1.90 2.0 5.9 8.96
12 65 / 0.254 2.40 2.0 6.5 5.64

Professional Performance Features

  • Extreme High-Voltage Integrity: Specifically engineered with an extra-thick silicone wall to handle consistent high-tension pulses up to 25KV DC. This prevents dielectric breakdown and electrical leakage in sensitive ignition circuits.
  • Superior Thermal Endurance: This wire is capable of maintaining its physical flexibility and electrical properties in extreme environments ranging from sub-zero cryogenic conditions at -60°C (-76°F) to constant high-heat exposure at +250°C (+482°F).
  • Nickel-plated Copper Advantage: By utilizing a Nickel-plated conductor, the wire eliminates the risk of conductor oxidation and brittle failure which commonly occurs in standard tinned copper at temperatures above 200°C (392°F).
  • Industrial Grade Durability: The specialized silicone rubber insulation provides excellent resistance to moisture, chemicals, and aging, ensuring a long operational life in professional-grade burners and heating equipment.
  • Non-Flammable Properties: Inherently flame retardant, meeting the safety requirements for critical gas and pulse ignition modules.

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