Type Photovoltaic USE-2/RHH/RHW-2 Copper Cable

USE-2/RHH/RHW-2 Cable Construction

USE-2/RHH/RHW-2 Cable Application In PV System

• Module Interconnection: Connecting individual solar panels in series to form “string arrays.”
• Main Trunk Line (String Line): Extending from the string arrays to the combiner box or inverter.
• Combiner Box Output: Transmitting the combined DC power to the inverter.
• Direct Buried Installation: Underground cabling between arrays or to the inverter location, using USE-2 rated cable.

USE-2/RHH/RHW-2 Cable Standard

• UL-44, UL-854, UL-1581, UL 2556, UL-4703

USE-2/RHH/RHW-2 Cable Feature

• Temperature Rating: Typically rated to withstand 90°C in humid or dry heat environments, with photovoltaic cables themselves often capable of withstanding dry heat up to 150°C. This characteristic is critical as rooftop temperatures can rise sharply.
• Flexibility: Designed specifically for low-temperature environments, maintaining flexibility to facilitate installation.
• Flame Retardancy: Photovoltaic cable specifications include flame retardancy testing requirements.

Why is this Cable the Perfect Choice for Solar Systems?

• Roof installation (exposed to sunlight/weather): Use PV cables with USE-2 rating—featuring sunlight resistance, moisture resistance, and high-temperature tolerance.
• Wiring to the inverter (may be installed in conduits): Use RHH/RHW-2 rated cables, permitted for conduit installation (exposed or buried) after leaving the PV array.
• Building Interiors (e.g., connecting to combiner boxes or inverters): Use RHH/RHW-2 rated cables compliant with NEC Article 690.31, suitable for use in conduit trays and other indoor locations.