Xinya Blog / Sep 23, 2026
UL 4703 PV Wire: 600 V, 1000 V and 2000 V Construction Guide
UL 4703 covers photovoltaic wire used in solar power systems. The product data available for Xinya includes a 600 V construction table and identifies separate 1000 V and 2000 V construction series, but dimensional rows were not supplied for those higher-voltage series in the source catalogue.
UL 4703 product data
| Item | Documented data |
|---|---|
| Recognized file | UL File No. E331816 |
| Standard | UL 4703 |
| Temperature | 105 °C dry / 90 °C wet |
| Voltage table published | 600 V |
| Higher-voltage series | 1000 V and 2000 V identified; no dimensional rows supplied |
| Construction | Stranded tinned or bare copper · XLPE insulation · XLPE covering |
| UV / ozone | UV and ozone resistant |
See the UL PV wire product page and the UL PV wire series page. The UL 4703 record is separate from the UL 758 AWM file E170689.
600 V versus 1000 V and 2000 V
The 600 V table lists 12, 10 and 8 AWG constructions with conductor diameter, insulation thickness, jacket thickness, overall diameter and maximum conductor resistance. For 1000 V or 2000 V projects, ask for the current construction table and confirm which conductor sizes, insulation thicknesses and markings apply. Do not assume that the 600 V dimensions can be scaled or reused.
Selection checklist
- Confirm system voltage and whether the applicable table is 600 V, 1000 V or 2000 V.
- Confirm AWG and conductor stranding.
- Confirm dry and wet temperature conditions.
- Confirm UV, ozone and flame requirements.
- Confirm colour, marking and cut length.
- Confirm the exact UL file scope and current document.
FAQ
Does UL 4703 replace UL 758 AWM?
No. UL 4703 and UL 758 AWM are different programmes and files. The photovoltaic construction uses a separate UL record.
Are 1000 V and 2000 V data available?
The catalogue identifies those construction series, but the supplied source did not include dimensional rows. Request the current construction table before design approval.
Where can I check the UL record?
Review the compliance page and request the available UL 4703 document through the quotation form.
