18/4 AWG Plenum Security Alarm Cable - CMP/CL3P Rated, Unshielded, 1000ft White
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This professional-grade 18 AWG 4-conductor plenum security cable is engineered for reliable performance in plenum air spaces and commercial installations. Featuring stranded bare copper conductors with low-smoke PVC materials, this CMP-rated unshielded cable meets the strictest fire safety standards for in-ceiling and HVAC applications while providing a cost-effective solution for installations in low-interference environments.
Proudly made in the USA, this versatile cable is ideal for security systems, intercoms, audio distribution, and power-limited fire alarm circuits. With four color-coded conductors and sequential footage marking, this cable simplifies installation and troubleshooting. ETL listed and RoHS compliant for quality assurance and code compliance.
Key Features
- Plenum rated (CMP/CL3P) for installation in air handling spaces
- Low smoke PVC materials meet strict fire safety requirements
- Unshielded design for cost-effective installations in low-interference environments
- 4 color-coded conductors for versatile wiring configurations
- Stranded copper construction for flexibility during installation
- Sequential footage marking for accurate measuring and installation tracking
- ETL Listed and RoHS compliant for quality assurance
- Made in USA for consistent quality and reliability
Ideal Applications
- Security and burglar alarm systems
- Fire alarm and life safety systems
- Intercom and communication systems
- Sound and audio distribution networks
- Access control systems
- Power-limited control circuits
- Residential and commercial installations requiring plenum-rated cable
Technical Specifications
Conductors
- AWG Size: 18/4 (4 conductors)
- Strand Count: 7 strands per conductor
- Material: Bare copper
- Construction: Stranded for flexibility
- Conductor Insulation Thickness: 0.010" PVC
Conductor Color Code
- Black
- Red
- White
- Green
Insulation & Jacket
- Conductor Insulation: Low smoke PVC
- Shield: Unshielded
- Outer Jacket: Low smoke PVC
- Jacket Color: White
- Jacket Thickness: 0.38mm
- Nominal Overall Diameter: 4.72mm
Electrical Ratings
- Voltage Rating: 300V
- Temperature Rating: 75°C
- NEC Articles: 725 (CL2P/CL3P), 760 (FPLP), 800 (CMP)
Certifications & Compliance
- CMP (Communications Plenum) Rated
- CL3P (Class 3 Plenum) Rated
- FPLP (Fire Power Limited Plenum)
- ETL Listed
- RoHS Compliant
- Made in USA
Packaging & Marking
- Spool Length: 1000 feet
- Sequential footage marking on jacket
- Jacket Printing: "18 AWG 4C UNSHIELDED TYPE CL3P/FPLP c(ETL)us TYPE CMP E179335"
Installation Notes
This plenum-rated cable is designed for installation in air handling spaces, drop ceilings, and HVAC plenums where low-smoke, fire-resistant materials are required by code. The CMP rating is the highest fire safety rating for communications cables, making it suitable for the most demanding commercial installations.
The unshielded construction makes this cable ideal for installations where electromagnetic interference is not a concern, providing a cost-effective solution for basic alarm circuits in plenum spaces. This is particularly suitable for commercial applications in low-interference environments where plenum rating is mandatory but shielding is not required.
The 18/4 configuration is perfect for security zones, motion detectors, and other devices requiring four conductors. The 18 AWG gauge provides good balance between flexibility and current-carrying capacity for professional installations. The compact 4.72mm diameter makes this cable easy to route through conduits and tight plenum spaces.
Always consult NEC Article 725, 760, and 800 requirements and local building codes before installation.