Southwire 553020507 18/2 Solid CL2 Thermostat Cable

Product Description

The SOUTHWIRE 553020507 is an 18 AWG, 2-conductor solid CL2-rated thermostat cable designed for low-voltage control wiring in HVAC systems. It ships on a 500-foot roll, sold per foot, making it a practical choice for both short runs and larger jobs. The CL2 rating indicates it meets National Electrical Code requirements for Class 2 residential wiring applications. Licensed HVAC technicians and electricians use this cable to connect thermostats to furnaces, air handlers, heat pumps, and related control equipment where reliable, low-voltage signal transmission is required.

This cable is a standard choice for residential and light commercial HVAC thermostat wiring. The 18 AWG solid conductor construction is well suited for control circuit runs from a thermostat to an air handler, furnace, or heat pump. The 500-foot roll format reduces waste on multi-unit jobs and allows installers to pull the exact footage needed for each run.

Key Features

• 18 AWG solid conductors for stable, low-resistance control signal runs
• 2-conductor configuration for basic thermostat wiring applications
• CL2 rating meets NEC Class 2 requirements for residential low-voltage wiring
• 500-foot roll sold per foot for flexible job-site purchasing
• Designed for low-voltage HVAC thermostat and control circuit wiring

Compatibility

Designed as a standard 18/2 CL2 thermostat cable suitable for low-voltage control wiring in residential and light commercial HVAC systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or electrician in accordance with NEC Article 725 governing Class 2 wiring. Always de-energize the HVAC system at the disconnect and thermostat before making any control wiring connections. Avoid running low-voltage thermostat cable in the same conduit or bundle as line-voltage conductors. Follow local codes for concealed or exposed wiring in walls and ceilings.

Technical Specifications

• Wire Gauge: 18 AWG
• Number of Conductors: 2
• Conductor Type: Solid
• Cable Rating: CL2
• Roll Length: 500 feet
• UPC: 032886035975

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 553020507