Southwire 18/10cl2 CL2 Thermostat Cable 250 Ft Reel

Product Description

The SOUTHWIRE 18/10cl2 is an 18 AWG, 10-conductor solid CL2-rated thermostat cable designed for low-voltage control wiring in residential and light commercial HVAC systems. The PVC jacket provides durable insulation suitable for in-wall and concealed routing applications. CL2 certification meets National Electrical Code requirements for Class 2 low-voltage wiring, making it appropriate for thermostat, zone control, and related signal circuits. Each reel contains 250 feet of solid-conductor cable, giving installers enough run length for most new-construction or retrofit projects without mid-run splices.

This cable is used by HVAC technicians and electricians pulling thermostat wire between air handlers, furnaces, heat pumps, zone controllers, and wall-mounted thermostats. The 10-conductor configuration supports multi-stage systems and zoning applications that require more than the standard 5- or 8-wire runs. Solid conductors are well suited for terminal-block and screw-terminal connections common on HVAC control boards and thermostat bases. The 250-foot reel format works for both single-system installs and multiple shorter runs pulled from one source.

Key Features

• 18 AWG solid conductors rated for low-voltage Class 2 control circuits
• 10-conductor configuration supports multi-stage and multi-zone HVAC systems
• CL2 rating meets NEC Class 2 wiring requirements for concealed in-wall installation
• PVC jacket provides moisture resistance and mechanical protection in typical indoor routing
• 250-foot reel reduces the need for mid-run splices on longer thermostat wire pulls

Compatibility

Designed as a standard CL2-rated low-voltage thermostat cable for residential and light commercial HVAC control wiring applications including thermostats, zone controllers, and air handler control boards.

Installation Notes

Installation should be performed by a licensed HVAC technician or electrician in accordance with NEC Article 725 Class 2 wiring requirements. Power down the HVAC system and thermostat transformer circuit before making any control wiring connections. Route cable away from high-voltage conductors and avoid sharp bends or staple punctures that could damage conductor insulation. Verify all terminal assignments at both the control board and thermostat base before restoring power.

Technical Specifications

• Conductor Size: 18 AWG
• Number of Conductors: 10
• Conductor Type: Solid
• Jacket Material: PVC
• Cable Rating: CL2
• Reel Length: 250 feet
• Unit of Measure: Roll
• Manufacturer Part Number (Alt): 47180307

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 18/10cl2