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The Honeywell 84201 is an 18 AWG, 2-conductor thermostat wire cable supplied on a 500-foot spool. It features bare copper conductors with PVC insulation and a PVC outer jacket, making it a standard choice for low-voltage thermostat control wiring in residential and light commercial HVAC systems. Rated CL2 and approved by UL and ETL, this cable meets the requirements for in-wall and concealed wiring applications. The 500-foot spool length reduces the need for mid-run splices on larger installs. HVAC technicians and electricians rely on this wire for reliable signal transmission between thermostats, air handlers, furnaces, and condensing units.
This cable is suited for residential and light commercial thermostat wiring installations, including connections between low-voltage thermostats and HVAC equipment such as furnaces, heat pumps, and air conditioning systems. Its 18 AWG bare copper conductors handle the low-voltage control signals typical of 24-volt HVAC circuits. The 500-foot spool is a practical quantity for contractors running wire on new construction or retrofit jobs where multiple runs are required.
Designed as a standard CL2-rated, 18 AWG 2-conductor thermostat cable for use with residential and light commercial low-voltage HVAC control wiring applications.
Installation should be performed by a licensed HVAC technician or electrician in accordance with local codes and NEC Article 725 governing Class 2 low-voltage wiring. Always de-energize the HVAC system at the breaker and thermostat transformer before making any wiring connections. Avoid routing low-voltage thermostat wire in the same conduit or raceway as line-voltage conductors. Secure the cable at appropriate intervals and protect any exposed runs from physical damage per applicable code requirements.
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