Description
The Genesis 18/3 Stranded Shielded Plenum-Rated Thermostat Wire (SKU: TSSP-18/3) is a professional-grade control wire engineered for demanding HVAC installations where air-handling spaces require plenum-rated cabling. Supplied on a convenient 1,000-foot roll, this wire is ideal for large commercial and residential projects that demand both signal integrity and code compliance.
Why Choose Plenum-Rated Thermostat Wire?
Plenum-rated (CMP) cable is required by the National Electrical Code (NEC) when wire is routed through air-handling spaces, return-air plenums, and dropped ceilings used as air ducts. The low-smoke, flame-retardant jacket of Genesis plenum wire reduces the spread of fire and limits toxic smoke generation — keeping occupants safer and keeping your installation up to code.
Stranded Conductors for Flexibility and Reliability
The 18 AWG stranded conductors offer superior flexibility compared to solid wire, making pulls through conduit, walls, and tight spaces significantly easier. Stranded construction also provides better resistance to vibration fatigue — an important consideration in mechanical rooms and rooftop equipment installations.
Shielded Design for Signal Integrity
The integrated shield (drain wire included) protects low-voltage thermostat signals from electromagnetic interference (EMI) and radio-frequency interference (RFI). This is especially critical in commercial environments with variable-frequency drives (VFDs), motors, and other electrical equipment that can introduce noise into control wiring.
Key Features
- Conductor Size: 18 AWG stranded copper
- Number of Conductors: 3
- Construction: Stranded, shielded with drain wire
- Jacket Rating: Plenum (CMP) — suitable for air-handling spaces
- Roll Length: 1,000 feet
- Manufacturer Part Number: 32261012
- Low-smoke, flame-retardant jacket for enhanced fire safety
- Suitable for HVAC thermostat, zone control, and building automation wiring
Typical Applications
- Thermostat and zone control wiring in commercial and residential HVAC systems
- Building automation system (BAS) low-voltage control runs
- Installations routed through plenum air-handling spaces and return-air ceilings
- Environments with high EMI/RFI where signal shielding is required
- Multi-zone HVAC systems requiring reliable, noise-free communication
Why Buy from Jackson Systems?
Jackson Systems stocks Genesis thermostat wire for fast fulfillment on both small and large project orders. The 1,000-foot roll format minimizes waste and maximizes value on commercial jobs. Trust Jackson Systems for the quality wire and expert support your HVAC projects demand.







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