Southwire 18-6CS Thermostat Wire 18AWG 6C 250ft

Product Description

The SOUTHWIRE 18-6CS is an 18 AWG, 6-conductor thermostat wire supplied in a 250-foot spool. This type of low-voltage control wire is the standard connection medium between a thermostat and HVAC equipment, carrying 24-volt control signals to heating, cooling, and accessory terminals. It is handled and installed by licensed HVAC technicians during new system installations and service calls. The hybrid construction noted in the product description supports flexibility during pull-through and routing in residential and light commercial applications.

This wire is suited for residential and light commercial HVAC control wiring where a 6-conductor run is required. Typical applications include multi-stage systems, heat pumps with auxiliary heat, or any installation where additional control conductors are needed beyond a basic 2-wire heating circuit. The 250-foot spool length supports longer thermostat wire runs common in larger homes or commercial spaces.

Key Features

• 18 AWG conductor gauge for standard low-voltage thermostat control circuits
• 6 conductors provide capacity for multi-stage or heat pump control wiring
• 250-foot spool length reduces the need for splices on longer runs
• Hybrid construction supports flexibility during installation and routing
• Rated for 24-volt low-voltage control signal applications

Compatibility

Designed as an OEM-style replacement and new-installation wire for residential and light commercial HVAC thermostat control wiring applications requiring 18 AWG 6-conductor cable.

Installation Notes

Installation should be performed by a licensed HVAC technician following NEC low-voltage wiring guidelines. Power down the HVAC system and thermostat before disconnecting or connecting control wiring. Avoid running thermostat wire in the same conduit as line-voltage wiring. Secure wire runs with appropriate staples or cable ties at regular intervals to prevent damage or strain on terminals.

Technical Specifications

• Conductor Gauge: 18 AWG
• Number of Conductors: 6
• Wire Length: 250 feet
• Application Voltage: 24 volts (low-voltage control)

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 18-6CS