Southwire 553065407 18 Awg 6-conductor Thermostat Wire

Product Description

The SOUTHWIRE 553065407 is an 18 AWG, 6-conductor thermostat wire designed for low-voltage control wiring in residential and light commercial HVAC systems. Sold per foot, this wire provides the flexibility to cut exactly the length needed for a given installation, reducing waste on service calls and retrofit jobs. The 6-conductor configuration supports multi-stage heating and cooling systems, heat pumps, and zone control applications where additional control circuits are required. Licensed HVAC technicians and controls installers are the primary users of this product.

This thermostat wire is suited for wiring between thermostats, air handlers, furnaces, heat pumps, and zone controllers in residential and light commercial installations. The 18 AWG gauge is the industry-standard size for low-voltage thermostat wiring, providing adequate current-carrying capacity for 24-volt control circuits commonly found in split systems, package units, and ducted HVAC equipment. It is appropriate for both new construction rough-in and replacement or upgrade wiring on existing systems.

Key Features

• 18 AWG conductor gauge — standard size for 24-volt HVAC control circuits
• 6-conductor configuration supports multi-stage, heat pump, and zone control wiring
• Sold per foot for precise length cuts and minimal material waste
• Part of the Southwire 620 series thermostat wire product line

Compatibility

Designed as a standard 18 AWG 6-conductor low-voltage thermostat wire suitable for typical residential and light commercial HVAC control wiring applications.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified controls installer. Power down the HVAC system at the disconnect and turn off the thermostat before running or connecting any control wiring. Route wire away from high-voltage conductors and sharp edges, and follow all applicable local codes and NEC low-voltage wiring requirements. Do not use this wire for line-voltage applications.

Technical Specifications

• Conductor Gauge: 18 AWG
• Number of Conductors: 6
• Sold In: Per foot increments
• UPC: 029892553067

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 553065407