Southwire 552040407 Thermostat Cable 20 Awg 4 Conductor

Product Description

The SOUTHWIRE 552040407 is a 20 AWG, 4-conductor thermostat cable designed for low-voltage control wiring in HVAC systems. The brown PVC jacket measures 0.132 inches in outer diameter and is rated sunlight resistant, making it suitable for both interior and exterior routing applications. This cable is sold in cut-to-length increments of 1 foot, with a minimum cut length of 250 feet from a 1,000-foot coil. HVAC technicians and installers rely on this cable to connect thermostats, control boards, and zone controllers in residential and light commercial systems.

This thermostat cable is used in residential and light commercial HVAC installations where low-voltage control signal wiring is required between a thermostat and air handler, furnace, heat pump, or zone control panel. The 4-conductor configuration supports standard heating and cooling control circuits. The sunlight-resistant jacket allows for exposed outdoor runs, such as routing along exterior walls between equipment pads and conditioned spaces.

Key Features

• 20 AWG, 4-conductor configuration for standard low-voltage HVAC control circuits
• 0.132-inch outer diameter with brown PVC jacket
• Sunlight-resistant jacket rated for exposed and exterior routing
• Sold in 1-foot cut increments with a 250-foot minimum cut length
• Available on 1,000-foot coils

Compatibility

Designed as an OEM-style replacement and new-installation thermostat cable for residential and light commercial low-voltage HVAC control wiring applications requiring a 4-conductor, 20 AWG cable.

Installation Notes

This cable is typically installed by licensed HVAC technicians. Power down all HVAC equipment at the breaker and disconnect low-voltage transformer circuits before pulling or terminating control wiring. Follow NEC guidelines for low-voltage wiring installation, including proper stapling intervals and clearance from high-voltage conductors. Avoid sharp bends that could damage conductor insulation.