UL3290 XLPE Insulated Wire – 125°C / 600V Hook-Up Wire for HVAC and High-Temperature Equipment
UL3290 is a high-performance hook-up wire certified under UL 758 (AWM Style 3290), insulated with cross-linked polyethylene (XLPE). With a voltage rating of 600V and thermal endurance up to 125°C, it’s specifically engineered for internal wiring in heat pumps, HVAC units, and refrigeration equipment, where thermal stress, electrical load, and mechanical reliability are key concerns.
Its thicker insulation wall provides enhanced protection against abrasion, electrical leakage, and environmental wear—making UL3290 an ideal solution for industrial and commercial machinery exposed to fluctuating temperatures or enclosed electrical compartments.
Technical Highlights
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Conductor: Solid or stranded bare or tinned copper
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Available Sizes: 9 AWG to 26 AWG
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Insulation Material: Cross-linked polyethylene (XLPE)
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Nominal Insulation Thickness: 1.52 mm (60 mils); minimum 1.37 mm (54 mils)
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Temperature Rating: Up to 125°C
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Voltage Rating: 600V
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Flame Test: Passes UL Horizontal Flame Test (UL 1581 VW-1)
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Certifications: UL AWM Style 3290, RoHS & REACH compliant
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Standard Colors: Black, white, red, yellow, blue (custom options available)
Product Advantages
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Thick-wall insulation: Extra dielectric strength and abrasion resistance
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Excellent thermal stability: Maintains performance in long-duration heating cycles
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Electrical integrity: Prevents arcing and leakage under high-voltage conditions
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Easy termination: Smooth stripping and crimping compatibility for automated processes
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Environmentally compliant: Free of heavy metals and halogens, supporting ESG goals
Typical Application Scenarios
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Wiring in residential and commercial HVAC systems
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Internal connections in heat pumps, air conditioning units, and chillers
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Industrial machinery operating under moderate to high thermal loads
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Internal cabling for power distribution, control boards, and motor modules
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Use in energy storage systems, where high voltage and safe routing are essential
Conductor Resistance Table (20°C, Ω/km)
| AWG | Typical Resistance |
|---|---|
| 26 | 150 Ω/km |
| 24 | 94.2 Ω/km |
| 22 | 59.4 Ω/km |
| 20 | 36.7 Ω/km |
| 18 | 23.2 Ω/km |
| 16 | 14.6 Ω/km |
| 14 | 9.26 Ω/km |
| 12 | 5.83 Ω/km |
| 10 | 3.65 Ω/km |
| 9 | ~2.9 Ω/km |
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🌐 External Technical Reference
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