UL 4703 PV Wire | Photovoltaic Solar Cable (Copper Conductor) | Sunlight Resistant

PV & Solar Energy Cables UL Certified15
Description

UL 4703 PV Wire | Photovoltaic Solar Cable (Copper Conductor) | Sunlight Resistant

Product Overview

UL 4703 PV Wire is a premium, sunlight-resistant cable specifically engineered for interconnections within photovoltaic (PV) power generation systems. Featuring high-purity copper conductors and robust XLPE insulation, this cable delivers reliable power transmission, exceptional environmental durability, and compliance with critical safety standards. It is the optimal solution for solar farms, commercial rooftops, and residential PV installations.

Key Features & Benefits

  • Solar-Specific Design: Engineered for interconnecting solar panels, combiners, inverters, and balance-of-system components.

  • Superior Weather Resistance: UV-stabilized XLPE insulation withstands prolonged sunlight exposure, extreme temperatures (-40°C to +90°C), moisture, and wet conditions.

  • Robust Construction: Stranded copper conductors (bare or optional tinned for corrosion resistance) with high-quality cross-linked polyethylene (XLPE) insulation.

  • Versatile Installation: Rated for exposed/concealed wiring (wet/dry locations), direct burial, and conduit use. Complies with USE-2, RHW-2, and PV requirements.

  • High Performance: Stable electrical properties across wide temperatures, excellent flexibility, low conductor resistance for efficient power flow.

  • Safety & Compliance: Meets UL 4703 (Type PV), UL 44 (Type RHW-2), UL 854 (Type USE-2), and RoHS. UL File Number: E365883.

  • Reliable Voltage Ratings: Suitable for 600V, 1000V, and 2000V PV systems.

Construction Details

  • Conductor: Stranded copper (bare or tinned), single layer (smaller AWG) or multi-layer (larger kcmil).

  • Insulation: Cross-Linked Polyethylene (XLPE) - excellent thermal stability, dielectric strength, environmental resistance.

  • Temperature Rating: -40°C to +90°C (Wet or Dry Locations).

  • Standards: UL 4703 (Type PV), UL 44 (Type RHW-2), UL 854 (Type USE-2), RoHS.

Technical Specifications

Size (AWG/kcmil) Cond. Dia. (mm) Min. Strands Ins. Thick. (mm) Nom. O.D. (mm) Weight (kg/km) Max. Cond. Res. @ 20°C (Ω/km)
14 1.83 7 1.90 5.6 53 8.6100
12 2.16 7 1.90 6.0 66 5.4300
10 2.72 7 1.90 6.5 88 3.4100
8 3.40 7 2.15 7.7 130 2.1400
6 4.29 7 2.15 8.6 183 1.3500
4 5.41 7 2.15 9.7 265 0.8480
3 6.02 7 2.15 10.3 321 0.6730
2 6.81 7 2.15 11.1 391 0.5340
1 7.59 18 2.66 12.9 506 0.4230
1/0 8.53 18 2.66 13.9 617 0.3350
2/0 9.55 18 2.66 14.9 754 0.2660
3/0 10.74 18 2.66 16.1 927 0.2110
4/0 12.07 18 2.66 17.4 1140 0.1670
250 13.21 35 3.04 19.3 1366 0.1420
300 14.48 35 3.04 20.6 1608 0.1180
350 15.65 35 3.04 21.7 1849 0.1010
400 16.74 35 3.04 22.8 2097 0.0885
450 17.78 35 3.04 23.9 2318 0.0787
500 18.69 35 3.04 24.8 2663 0.0709
550 19.69 58 3.43 26.6 2867 0.0644
600 20.65 58 3.43 27.5 3106 0.0590
650 21.46 58 3.43 28.3 3343 0.0545
700 22.28 58 3.43 29.1 3589 0.0506
750 23.06 58 3.43 29.9 3826 0.0472
800 23.83 58 3.43 30.7 4063 0.0443
900 25.37 58 3.43 32.2 4545 0.0393
1000 26.92 58 3.43 33.8 5027 0.0345

Applications

  • PV Module Interconnection (Panel-to-Panel)

  • Array to Combiner Box Wiring

  • Combiner Box to Inverter Wiring

  • Inverter to Disconnect/Service Panel

  • Ground-Mounted Arrays (Direct Burial)

  • Roof-Mounted Systems (Exposed/Conduit)

  • Wet/Dry Locations requiring USE-2, RHW-2, or PV Wire

Product Advantages

  • Engineered for PV Systems: Meets the unique electrical, mechanical, and environmental demands of solar power generation.

  • Enhanced System Reliability & Longevity: XLPE insulation and UV resistance ensure performance in harsh outdoor environments for decades.

  • Simplified Compliance: Single cable solution meeting UL 4703 (PV), UL 44 (RHW-2), and UL 854 (USE-2) standards.

  • Installation Flexibility: Approved for exposed runs, conduit, concealed spaces, and direct burial - reducing installation complexity and cost.

  • Optimized Power Delivery: Low conductor resistance (stranded copper) maximizes energy harvest efficiency.

  • Wide Temperature Operation: Performs reliably in extreme cold (-40°C) and heat (+90°C).