600V / 1000V / 2000V | XLPO Insulation | Outdoor PV Connections
UL 4703 photovoltaic cable is designed for DC connections between solar modules and other electrical components in photovoltaic systems. Its stranded conductor and XLPO insulation construction support outdoor installations exposed to sunlight, moisture and temperature changes.
The product range includes 600V, 1000V and 2000V versions, with listed conductor sizes from 14 AWG to 4/0 AWG. Black and red outer insulation options support circuit identification and project wiring requirements.
Voltage options
Listed conductor sizes
Stated temperature range
Key Features
Multiple Voltage Options
Available in 600V, 1000V and 2000V versions to suit different photovoltaic system designs. Select the appropriate version according to the circuit's maximum voltage and project requirements.
Copper Conductor Options
Tinned copper and bare copper constructions are available. Aluminium conductor options can be discussed separately, with dimensions, electrical performance and termination requirements confirmed for the selected construction.
XLPO Insulation Construction
Cross-linked polyolefin is used for both the inner and outer insulation layers, providing electrical insulation and protection for outdoor PV wiring.
UV and Ozone Resistance
Designed for exposure to sunlight and ozone in outdoor photovoltaic installations, including rooftop systems and ground-mounted arrays.
Heat and Moisture Resistance
The specified construction supports operation in environments subject to heat and moisture, with a stated temperature range of −40°C to +90°C.
Flame Retardancy
The product specification references the UL 1581 VW-1 flame test for evaluating flame propagation performance.
Low-Temperature Flexibility
Designed to maintain flexibility in cold conditions, supporting cable handling and installation within the specified temperature limits.
Direct Burial Capability
Direct-burial applications are supported where covered by the supplied cable's approved specification and marking. Installation depth, mechanical protection and site conditions must follow the applicable project requirements.
Technical Specifications
Conductor Construction and Resistance
|
Size (AWG)
|
Conductor Construction (No. × mm)
|
Maximum Conductor Resistance at 20°C (Ω/km)
|
|---|---|---|
|
14
|
41 × 0.254
|
8.96
|
|
12
|
48 × 0.30
|
5.64
|
|
10
|
78 × 0.30
|
3.546
|
|
8
|
67 × 0.40
|
2.23
|
|
6
|
106 × 0.40
|
1.403
|
|
4
|
420 × 0.254
|
0.882
|
|
2
|
665 × 0.254
|
0.5548
|
|
1/0
|
1045 × 0.254
|
0.3487
|
|
2/0
|
1330 × 0.254
|
0.2766
|
|
3/0
|
1672 × 0.254
|
0.2194
|
|
4/0
|
2109 × 0.254
|
0.1722
|
Cable Dimensions
|
Size (AWG)
|
600V Inner Insulation OD (mm)
|
600V Overall OD (mm)
|
1000V / 2000V Inner Insulation OD (mm)
|
1000V / 2000V Overall OD (mm)
|
|---|---|---|---|---|
|
14
|
3.45
|
5.10
|
4.20
|
5.85
|
|
12
|
3.95
|
5.60
|
4.75
|
6.40
|
|
10
|
4.60
|
6.20
|
5.35
|
7.00
|
|
8
|
6.10
|
7.70
|
6.70
|
8.30
|
|
6
|
7.10
|
9.50
|
7.65
|
10.10
|
|
4
|
8.80
|
11.20
|
9.30
|
11.70
|
|
2
|
10.60
|
13.00
|
11.10
|
13.50
|
|
1/0
|
13.20
|
16.40
|
13.70
|
16.90
|
|
2/0
|
14.60
|
17.80
|
15.10
|
18.30
|
|
3/0
|
16.00
|
19.20
|
16.50
|
19.70
|
|
4/0
|
17.40
|
20.60
|
17.90
|
21.10
|
OD means outside diameter. Final construction, dimensions and tolerances are subject to the approved product datasheet. Aluminium versions require separate technical data.
Standards and Testing
UL 4703 covers photovoltaic wire for interconnection wiring in PV power systems, including 600V, 1000V and 2000V voltage classes.[1]
The supplied product specification identifies the following test references:
Finished cable voltage-test levels vary with cable size and voltage class. The specification lists 3–4 kV for 600V versions and 6–9 kV for 1000V and 2000V versions. The exact test voltage and duration should be confirmed in the approved inspection procedure.
Contact SINELINK to confirm certification coverage, cable marking and supporting test documentation for the selected conductor, size and voltage rating.
Typical Applications
This cable is intended for photovoltaic DC wiring in:
Residential rooftop solar systems.
Commercial and industrial rooftop installations.
Ground-mounted solar power plants.
Utility-scale photovoltaic projects.
PV module interconnections and string wiring.
Connections to combiner boxes and inverter DC inputs.
Approved underground and direct-burial cable routes.
Cable sizing should consider design current, voltage drop, installation temperature, grouping, routing and connector compatibility.
Customisation Options
SINELINK supports project-based enquiries for cable specifications, identification and packing. Options can be reviewed against the required product approval and order quantity.
Electrical and Construction Options
• Conductor size and voltage class.
• Tinned copper or bare copper conductor.
• Aluminium conductor construction, subject to separate technical confirmation.
• Inner insulation colour and black or red outer insulation.
Cable Length and Identification
• Specified cutting lengths.
• Coil, reel or drum lengths matched to installation requirements.
• Customer identification and project references in cable printing.
• Sequential length marking and package labels.
OEM and Project Packaging
• Customer-branded labels and shipping marks.
• Packing arranged by cable size, colour or installation area.
• Project-specific documentation and inspection requirements.
Changes to materials, construction or printing are reviewed against the applicable certification scope before order confirmation.
Packaging and Transportation
Coil, Reel and Drum Packing
Packing is selected according to cable diameter, ordered length and handling requirements. Coils are suitable for manageable lengths, while reels or drums support larger quantities and controlled cable pay-off.
Export Protection
Protective wrapping, secured cable ends and suitable outer packing help reduce contamination and handling damage during transport. Palletised packing or additional protection can be specified according to shipment size and destination requirements.
Package labels can identify cable type, conductor size, voltage class, colour, length and order reference to simplify warehouse receipt and site distribution.
Shipping Options
Sea freight: suitable for bulk orders and project deliveries.
Air freight: an option for urgent shipments where weight and cost permit.
Express courier: suitable for samples and small quantities.
Road or rail transport: considered where practical for the destination.
Final packing dimensions, shipment weight, delivery schedule and freight arrangements are confirmed with the order.
Request a Quote
Send SINELINK your required AWG size, conductor material, voltage rating, colour and total quantity. Please also include the installation method, destination, preferred packing length and any certification or customisation requirements.
We will help you confirm the specification and prepare a quotation for your project.
Explore More Photovoltaic Cable Options
For other sizes and voltage options, explore our UL PV Wire range, including dedicated product pages for common AWG sizes and 2000V applications.
For projects specifying EN 50618 or IEC 62930, review our EN 50618 H1Z2Z2-K Solar Cable. This range features tinned copper conductors with XLPO insulation and an outer sheath for photovoltaic DC connections.
Share your project standard and installation requirements with SINELINK to compare the appropriate cable options.
UL 4703 · Photovoltaic Cable
Technical Specifications
Conductor Construction and Resistance
|
Size (AWG)
|
Conductor Construction (No. × mm)
|
Maximum Conductor Resistance at 20°C (Ω/km)
|
|---|---|---|
|
14
|
41 × 0.254
|
8.96
|
|
12
|
48 × 0.30
|
5.64
|
|
10
|
78 × 0.30
|
3.546
|
|
8
|
67 × 0.40
|
2.23
|
|
6
|
106 × 0.40
|
1.403
|
|
4
|
420 × 0.254
|
0.882
|
|
2
|
665 × 0.254
|
0.5548
|
|
1/0
|
1045 × 0.254
|
0.3487
|
|
2/0
|
1330 × 0.254
|
0.2766
|
|
3/0
|
1672 × 0.254
|
0.2194
|
|
4/0
|
2109 × 0.254
|
0.1722
|
Cable Dimensions
|
Size (AWG)
|
600V Inner Insulation OD (mm)
|
600V Overall OD (mm)
|
1000V / 2000V Inner Insulation OD (mm)
|
1000V / 2000V Overall OD (mm)
|
|---|---|---|---|---|
|
14
|
3.45
|
5.10
|
4.20
|
5.85
|
|
12
|
3.95
|
5.60
|
4.75
|
6.40
|
|
10
|
4.60
|
6.20
|
5.35
|
7.00
|
|
8
|
6.10
|
7.70
|
6.70
|
8.30
|
|
6
|
7.10
|
9.50
|
7.65
|
10.10
|
|
4
|
8.80
|
11.20
|
9.30
|
11.70
|
|
2
|
10.60
|
13.00
|
11.10
|
13.50
|
|
1/0
|
13.20
|
16.40
|
13.70
|
16.90
|
|
2/0
|
14.60
|
17.80
|
15.10
|
18.30
|
|
3/0
|
16.00
|
19.20
|
16.50
|
19.70
|
|
4/0
|
17.40
|
20.60
|
17.90
|
21.10
|
OD means outside diameter. Final construction, dimensions and tolerances are subject to the approved product datasheet. Aluminium versions require separate technical data.
