Southwire 47680312 18 Awg 10C Thermostat Cable 250 Ft Plenum

Product Description

The SOUTHWIRE 47680312 is an 18 AWG, 10-conductor solid bare copper thermostat cable rated for plenum installations. It carries low-voltage control signals in HVAC systems where building codes require plenum-rated wiring. The cable is constructed with low-smoke PVC insulation on each conductor and an outer plenum PVC jacket, meeting the fire and smoke requirements for air-handling spaces. Rated to 150 volts and a temperature range of -20 degrees C to 60 degrees C, it is suitable for commercial and residential thermostat and control wiring runs. HVAC technicians and electrical contractors are the primary installers. The spool ships in a 250-foot length.

This cable is used in HVAC control wiring applications where the cable must pass through or be installed in plenum air-handling spaces. Common uses include multi-zone thermostat wiring, damper control, and building automation low-voltage signal runs. The 10-conductor count accommodates complex control configurations that require multiple signal paths in a single cable run. A durable rip cord is included for efficient jacket stripping in the field, and sequential length markings along the jacket allow technicians to track footage used without remeasuring.

Key Features

• 18 AWG solid bare copper conductors for reliable conductivity and minimal voltage drop
• 10 conductors in a single cable for multi-zone or multi-signal low-voltage applications
• Plenum PVC jacket rated for air-handling space installations
• Low-smoke PVC insulation on individual conductors
• Built-in rip cord for fast, clean jacket removal in the field
• Sequential length markings for accurate footage tracking during installation

Compatibility

Designed as an OEM-style replacement and general-use thermostat control cable for residential and light commercial HVAC low-voltage control systems requiring plenum-rated wiring.

Installation Notes

Installation should be performed by a licensed HVAC technician or electrician in accordance with the National Electrical Code (NEC) and local building codes. Always de-energize the HVAC system and thermostat circuit before making any wiring connections. Plenum-rated cable is required when routing through air-handling spaces or return-air plenums — confirm local code requirements before substituting cable types. Use the integrated rip cord to strip the jacket cleanly and avoid nicking conductor insulation.