Southwire 32150312 18/4 Stranded Shielded Plenum Cable 250 Ft

Product Description

The SOUTHWIRE 32150312 is an 18 AWG, 4-conductor stranded shielded plenum-rated cable designed for low-voltage signal and control wiring in commercial and residential installations. The cable features four stranded copper conductors with an overall foil shield and a drain wire, providing reliable shielding against electromagnetic interference. Its plenum rating makes it suitable for installation in air-handling spaces where building codes require CMP-rated cable. Electricians and low-voltage technicians install this cable in security systems, access control, audio distribution, and building automation control runs.

This cable is packaged as four individual 250-foot reels, giving installers a practical quantity for multi-run projects without the waste of an oversized master reel. The 18 AWG stranded construction offers flexibility during pulls through conduit or open plenum spaces, reducing the risk of conductor damage during installation. It is commonly used in commercial office buildouts, schools, healthcare facilities, and any project requiring a code-compliant low-voltage signal cable in a plenum air-handling environment.

Key Features

• 18 AWG stranded copper conductors for flexibility and reliable conductivity
• 4-conductor configuration suits security, controls, and audio wiring runs
• Overall foil shield with drain wire reduces electromagnetic interference pickup
• Plenum-rated construction meets CMP requirements for air-handling space installation
• Packaged as 4 x 250-foot reels for efficient multi-run jobsite use

Compatibility

Designed for low-voltage applications including security systems, access control panels, building automation controls, and audio distribution wiring where a plenum-rated 18 AWG 4-conductor shielded cable is specified.

Installation Notes

Installation should be performed by a licensed electrician or qualified low-voltage technician in accordance with the National Electrical Code (NEC) and applicable local codes. Verify that the plenum rating is required by the Authority Having Jurisdiction before specifying this cable in non-plenum spaces. Power down and de-energize all connected control equipment before terminating conductors. Maintain the foil shield continuity and terminate the drain wire at one end only to prevent ground loops in sensitive signal circuits.

Technical Specifications

• Conductor Size: 18 AWG
• Number of Conductors: 4
• Conductor Type: Stranded copper
• Shield Type: Overall foil shield with drain wire
• Cable Rating: Plenum (CMP)
• Jacket Color: Natural
• Reel Length: 250 feet per reel
• Package Quantity: 4 reels

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 32150312