Southwire 552020507 Thermostat Cable 20 Awg 2 Conductor

Product Description

The SOUTHWIRE 552020507 is a 20 AWG, 2-conductor thermostat cable designed for low-voltage control wiring in heating and cooling systems. Conductors are color-coded brown and white for straightforward identification during installation. The cable features a PVC jacket with a sunlight-resistant rating, making it suitable for both indoor runs and exposed outdoor routing where UV degradation is a concern. At 0.114 inches in overall diameter, the cable pulls cleanly through conduit and low-voltage raceway. This cable is sold and priced in 1-foot increments, with a 2,500-foot minimum cut length and a coil length of 2,000 feet per coil. HVAC technicians and low-voltage controls installers are the primary users of this product.

This thermostat cable is used in residential and light commercial HVAC applications to connect thermostats, zone controllers, and other low-voltage control devices to air handlers, furnaces, heat pumps, and condensing units. The 2-conductor configuration suits basic heating-only or single-stage systems where a limited number of control circuits are required. The PVC jacket provides adequate protection for in-wall, plenum-adjacent, and exposed exterior runs where sunlight resistance is needed. Installers typically route this cable from the air handler or furnace to the thermostat location in new construction and retrofit projects alike.

Key Features

• 20 AWG, 2-conductor construction for low-voltage thermostat control wiring
• Brown and white conductor color coding for easy circuit identification
• PVC jacket rated sunlight resistant for indoor and exposed outdoor use
• 0.114-inch overall diameter for easy routing through conduit and raceway
• Sold in 1-foot cut increments — minimizes waste on retrofit and service jobs
• 2,000-foot coil length supports large new-construction or multi-zone projects

Compatibility

Designed as a standard low-voltage thermostat cable for use with 24-volt control circuits in residential and light commercial heating, cooling, and heat pump systems requiring a 2-conductor run.

Installation Notes

Installation should be performed by a licensed HVAC technician or low-voltage controls installer in accordance with NEC Article 725 requirements for Class 2 control wiring. Power down the HVAC system at the disconnect or breaker before making any control wiring connections. Avoid running low-voltage thermostat cable in the same conduit as line-voltage wiring. Secure and protect the cable per local code requirements, especially at points of entry into equipment cabinets.