UL 4703 Standard for Photovoltaic Wire 1.1 This standard covers single-conductor, insulated and integrally or non-integrally jacketed, sunlight resistant, photovoltaic wire rated 90°C, 105°C, 125°C, or 150°C dry and, 90°C wet, 600, 1000, or 2000 V for interconnection wiring of grounded and ungrounded photovoltaic power systems as described in Article 690, Part IV, Wiring Methods, and other applicable parts of the National Electrical Code (NEC), NFPA 70. Thank You On behalf of our team here in Fremont, California: thank you to all the customers who have allowed us into your homes, shops, garages and places of work. TEMCo Industrial has been a leader in power and industrial equipment and tools since 1968. We’re proud to offer quality tools at affordable prices backed by our knowledgeable support. We believe that any DIYer or professional who works with their hands is doing honorable work and so we do our best to respect the trade or craft.