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Product

power connection cable seriesUL 4703 PV Wire600V / 1000V / 2000V DCDirect Burial & 720h UV

PV Wire UL 4703 Solar CableUL 4703 2000 V DC sunlight-resistant & direct-burial XLPE photovoltaic wire

PV Wire UL 4703 Photovoltaic Solar Cable (600 V, 1000 V & 2000 V DC) engineered per UL 4703 and NEC Article 690.31 with stranded bare/tinned copper or AA-8000 aluminum conductors (14 AWG to 750 kcmil) and thick-wall cross-linked.

UL 4703 / NEC 690
720h UV + -40 °C Impact
VW-1 / FT4 Tray Rated
Direct Burial & 90 °C Wet
Order designation
PV Wire 10 AWG 2kV
Nominal outer Ø
6.76 mm
Weight ≈
74 kg/km
Conductor DC R
3.410 Ω/km
90 °C free-air amp.
55 A
All sizes (6)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Standard
UL Subject 4703
NEC Art. 690 grounded/ungrounded
Voltage rating
2000 V DC
Also 600 V & 1000 V DC tiers
Size range
14 AWG–750 kcmil
String (12–8) & Feeder (6–750)
Insulation
XLPE / Dual-Wall
+90 °C Wet / +105–125 °C Dry
UV & Cold
720 h + -40 °C
UL 1581 Sunlight & Cold Impact
Burial rating
Direct Burial
Crush & impact qualified

Typical values for this cable type, based on UL 4703 / CSA C22.2 No. 271 / NEC Article 690 — confirmed in the datasheet and quotation for your order.

Application fit

Is PV Wire UL 4703 right for your machine?

Mandatory under NEC Article 690 for ungrounded and transformerless 1,000 V / 1,500 V / 2,000 V DC utility-scale solar tracker strings, combiner-box home runs and direct-buried DC collection trenches.

Fixed installation

Suitable

Routes exposed along single-axis solar tracker torque tubes, module harnesses, combiner boxes and central inverters.

Immersion & wet locations

Suitable

Passes UL 854 crush/impact Direct Burial tests and +90 °C RHW-2 wet insulation resistance for underground DC trenches.

Motor stator, traction & converter leads

Suitable

Flexible 19- to 133-strand tinned copper (12–8 AWG) handles daily ±60° single-axis solar tracker rotation.

Energy chain / drag chain

Not suitable

Photovoltaic power wire; not for high-speed factory machinery drag chains.

Use PUR-HF Drag-Chain Cable
Typical machines1500 V / 2000 V DC Utility-Scale Solar PlantsSingle-Axis & Dual-Axis Solar Tracker HarnessesCombiner Box to Central/String Inverter FeedersCommercial Rooftop & Carport PV ArraysGrid-Scale Solar + Battery (DC-Coupled BESS)

Construction

Layer by layer

PV Wire UL 4703 showing stranded tinned/bare copper (or AA-8000 aluminum on large feeders) conductor, polyester separator tape, and thick-wall electron-beam/silane cross-linked polyethylene (XLPE) insulation/jacket.

123
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Stranded tinned/bare copper (or AA-8000 Al) conductor19- to 133-strand tinned/bare annealed copper (14–2 AWG string/whip) or Class B compressed copper / AA-8000 aluminum (1/0 AWG–750 kcmil)ASTM B3 / B8 / B33 / B800 compliant
2Heavy-wall cross-linked polyethylene (XLPE) dielectric75 mil (1.90 mm) to 140 mil (3.56 mm) thermoset XLPE (single-layer or co-extruded dual-layer with colour skin)Thicker wall than USE-2 for 2,000 V DC & ungrounded array safety
3Sunlight-, moisture- & flame-resistant outer XLPE skinUV-stabilized Black (2.5 % carbon black), Red or White VW-1 flame-retardant XLPE outer surfacePasses 720-hour Xenon/Carbon-Arc UV & -40 °C cold impact

PV Wire 12 / 10 / 8 AWG (2000 V Tinned Cu)

Flexible stranded tinned copper string & whip wire compatible with MC4 / Amphenol H4 1500 V connectors

PV Wire 6 AWG to 750 kcmil (2000 V Cu / Al)

Direct-burial 2000 V DC combiner-to-inverter collection feeder (1/0 AWG and larger CT Rated for cable tray)

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UL 4703 / CSA C22.2 No. 271 / NEC Article 690. Values for your order are confirmed in the datasheet and quotation.

Electrical

Voltage ratings
600 V · 1000 V · 2000 V DC (UL 4703)
AC dielectric + spark test
6.0–7.5 kV AC water-tank dielectric & 10–15 kV spark test
Max. DC resistance @ 20 °C
5.43 Ω/km (12 AWG) · 3.41 Ω/km (10 AWG) · 2.14 Ω/km (8 AWG)
Long-term wet IR
UL 44 / RHW-2 90 °C water immersion stability

Thermal

Wet / dry operating temp.
+90 °C Wet · +105 °C / +125 °C Dry (per UL 4703 print)
Cold impact & cold bend
-40 °C cold impact & cold mandrel bend per UL 1581
Short-circuit temperature
+250 °C (5 s)

Mechanical

XLPE insulation thickness
75 mil / 1.91 mm (14–10 AWG 2kV) · 85 mil / 2.16 mm (8–2 AWG 2kV)
Min. bend radius
5 × OD (unshielded single conductor)
Direct burial crush test
Passes UL 854 underground service-entrance crush & impact

Resistance

Sunlight UV resistance
720-hour Carbon-Arc / Xenon-Arc weatherometer (≥ 80 % retention)
Flame propagation
UL 1581 VW-1 vertical flame & IEEE 1202 / FT4 (1/0 AWG+ CT)
Ammonia & rodent options
Available with anti-termite/rodent nylon or bronze-tape barrier

Reference standards

North American PV std
UL 4703 · Dual-rated UL 44 RHW-2 / UL 854 USE-2
Electrical code
NFPA 70 (NEC) Article 690.31(C)(1)
RoHS & REACH
2011/65/EU & EC 1907/2006 compliant

Identification

Surface print legend
SUN RES · -40C · DIRECT BURIAL · PV WIRE · 2000V · 90C WET · VW-1
Insulation colours
Black, Red (DC+), White (Grounded), Green (EGC)
Customs tariff (HS)
8544.4993

Sizes

6 standard 2000 V UL 4703 PV Wire string & feeder sizes

Conductor size, 2000 V XLPE wall thickness, outer diameter, weight and NEC 30 °C free-air ampacity.

2000 V dimensions & NEC ampacity
Order designationAWG/kcmil & strandingNominal Ø
mm		Weight ≈
kg/km		Max. DC R
Ω/km		90°C Air
A		Enquiry
2000 V Tinned Cu String Wire
PV Wire 12 AWG 2kV12 AWG (3.31 mm²) 19W Tinned Cu6.15545.43040
PV Wire 10 AWG 2kV10 AWG (5.26 mm²) 19W Tinned Cu6.76743.41055
PV Wire 8 AWG 2kV8 AWG (8.37 mm²) 19W Tinned Cu8.081152.14080
2000 V DC Collector Feeders
PV Wire 6 AWG 2kV6 AWG (13.3 mm²) 19W Tinned Cu9.041651.350105
PV Wire 250 kcmil 2kV Cu250 kcmil (127 mm²) 37W Cu CT19.601,3400.141455
PV Wire 500 kcmil 2kV Al500 kcmil (253 mm²) AA-8000 Al CT25.401,0200.116545
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • 12 AWG and 10 AWG 2000 V outer diameters (6.15–6.76 mm) are calibrated to fit standard Stäubli MC4-Evo 2 and Amphenol H4 1500 V DC gland seals.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
100 % 6.0–7.5 kV AC water-tank dielectric & 15 kV spark testZero breakdown and insulation resistance above UL 4703 minimumEvery manufactured reel
Sample tests
720-hour UV weatherometer, -40 °C cold impact & VW-1 flame test≥ 80 % tensile/elongation retention after 720 h UV and zero -40 °C cracksUL 4703 listing test
UL 854 Direct Burial crush & impact resistance testSurvives underground stone crush and impact loading without shortingUL 4703 listing test

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

UL 4703 Listed PV WireUL 44 RHW-2 / UL 854 USE-2NEC Art. 690 & CSA C22.2 No. 271

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX (UL) PV WIRE 10 AWG 2000V 90C WET 105C DRY SUN RES -40C DIRECT BURIAL VW-1
Delivery form
Fumigated wooden drums or steel export reels
Standard lengths
500 m · 1000 m (or custom cut lengths)
MOQ
100 m (standard) · 500 m (custom)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFPV Wire UL 4703 Solar Cable – technical datasheet6 sizes · construction, technical data, approvalsXLSXPV Wire UL 4703 spec data (Excel)All 6 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why does NEC Article 690 require UL 4703 PV Wire instead of standard USE-2 on transformerless / ungrounded solar arrays?
Standard USE-2 is only rated up to 600 V, lacks mandatory VW-1 vertical flame retardancy, is only tested to -20 °C cold impact, and has a thinner 45–60 mil insulation wall. UL 4703 PV Wire provides a heavier 75–85 mil XLPE wall rated to 1,000 V / 2,000 V DC, passes VW-1 flame, 720-hour UV and -40 °C cold impact tests, and is permitted on both grounded and ungrounded arrays.
How does North American UL 4703 PV Wire compare to European EN 50618 (H1Z2Z2-K) solar cable?
UL 4703 PV Wire uses 19-strand (or 7/37-strand) AWG/kcmil conductors with a single or co-extruded thick XLPE wall (rated 600/1000/2000 V DC per NEC) and UL Direct Burial certification. European EN 50618 (H1Z2Z2-K) uses Class 5 fine-stranded metric tinned copper (4, 6, 10 mm²) with dual-wall halogen-free electron-beam cross-linked elastomer rated 1.5 kV DC (1.8 kV max). Many utility projects specify dual-certified UL 4703 + EN 50618 / TÜV 2 PfG 1169 cables.
Why are 1500 V DC utility-scale solar plants wired with 2000 V UL 4703 PV Wire?
UL 4703 defines standard voltage tiers at 600 V, 1000 V and 2000 V. For 1,500 V DC string and central inverter architectures (where cold-morning Voc approaches 1,500 V DC), NEC requires the 2,000 V UL 4703 voltage class.
Can 1/0 AWG to 750 kcmil PV Wire be installed in open cable trays?
Yes. Sizes 1/0 AWG and larger pass the IEEE 1202 / UL 1685 vertical tray flame test and carry the 'FOR CT USE' (Cable Tray) surface marking.

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PV Wire UL 4703 Solar Cable

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