Southwire p40070-1c 16/2 CL2P Plenum Thermostat Cable 500 Ft

Product Description

The SOUTHWIRE p40070-1c is a 500-foot spool of 16 AWG, 2-conductor stranded thermostat cable rated for plenum air-handling spaces. Constructed to the CL2P classification, this shielded, low-voltage cable meets the 300-volt power-limited circuit standard required for installation in HVAC plenums and air ducts where fire and smoke propagation ratings are mandated by code. The shielded construction reduces electromagnetic interference, making it well-suited for signal-sensitive runs. Electricians and low-voltage technicians install this cable in commercial and residential applications where NEC Article 725 Class 2 wiring methods apply.

This cable is designed for general-purpose low-voltage, power-limited circuits including remote control, signaling, security, sound and audio, public address, intercom, alarm, and access control systems. The plenum rating makes it appropriate for above-ceiling and in-duct routing in commercial buildings where local codes require CL2P-rated conductors. It is commonly pulled in new construction and retrofit projects where routing passes through environmental air spaces.

Key Features

• CL2P plenum rating meets NEC Article 725 requirements for air-handling spaces
• 300-volt power-limited circuit rating suitable for low-voltage control and signaling runs
• 16 AWG stranded conductors for flexible routing and pull-through installations
• Shielded construction reduces electromagnetic and radio-frequency interference on signal circuits
• White jacket for easy identification in multi-cable installations
• 500-foot spool minimizes mid-run splices on longer commercial pulls

Compatibility

Designed as a general-purpose CL2P plenum thermostat and low-voltage control cable suitable for use in security, alarm, intercom, public address, audio, and access control circuit installations requiring a plenum-rated, power-limited conductor.

Installation Notes

Installation must be performed by a licensed electrician or qualified low-voltage technician in accordance with NEC Article 725 and applicable local codes. De-energize all circuits at the panel before terminating conductors. CL2P cable is required by code wherever wiring passes through air-handling plenums or environmental air spaces — do not substitute a non-plenum-rated cable in these locations. Use listed connectors and terminations rated for the conductor gauge and circuit class.

Technical Specifications

• AWG: 16
• Conductors: 2
• Cable Type: Stranded, Shielded
• Rating: CL2P (Plenum)
• Voltage Rating: 300 volts
• Length: 500 feet
• Jacket Color: White

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: p40070-1c