Prebuilt Solar Panel Interconnection Cables
Polar Wire prebuilds Solar Panel Interconnection Cables in a variety of lengths and configurations using MC3, MC4, and Tyco Connector Systems for photovoltaics. Our cables allow time-saving and safe serial and parallel wiring of PV modules for code-compliant building of integrated and free-standing solar installations.
Custom lengths available on request. Splitters for MC3 to MC4 available. Custom adaptors available.

Installation of a solar tracking array in progress atop the Renewable Energy Systems
store in Anchorage.
PWP Solar Panel Interconnection
Cables
Working With the Code
National Electric Code Article 690.31(B) dictates what conductors may be used for connection of photovoltaic panels:
…USE-2 and single conductor cable listed and labeled as photovoltaic (PV).
Polar Wire provides single conductor cable USE-2 and PV (generally RHW).
- Preassembled to reduce labor and tool costs with plug and play interconnection of modules and components
- Connectors are properly crimped to solar cables to ensure reliable conductivity
- Black 10 AWG USE-2 flame retardant wire complies with code standards for photovoltaic installations
- Cross linked polyethelene (XLPE) Jacket resists damage from sunlight and ozone exposure
- Rated current max 30 A, system voltage max 600 V
- Temperature range -40°C to 90°C
- Legend: E210404 (UL) 10 AWG TYPE RHH OR RHW-2 OR USE-2 SUN-RES. 600V
MC3 Connectors
- Easy and reliable push fit connection
- Waterproof and dustproof when connected
- Integrated twist locking
- High current capacity
- Constant low transition resistance
- High mechanical resistance
- UL approved
MC4 Connectors
- Polarity keyed housings help to prevent mismating
- Latching connectors help prevent accidental disconnection
- Silver plated contacts for improved electrical performance
- UL approved
TYCO Connectors
- Squeeze-to-release connection system
- Keyed housings provide mating and system safety
- Housing has flammability rating V-0 according to UL 94
- Fully shrouded high cycle life contacts
- Connector locking collar prevents accidental disconnects
- UL approved
