18 AWG 8-Conductor Shielded Plenum Alarm Cable - CMP Rated, 7 Strand, 1000ft
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18/8 Shielded Plenum Security Alarm Cable - CMP/CL3P Rated
Premium shielded plenum-rated 8-conductor security alarm cable engineered for mission-critical installations in electromagnetic interference (EMI) environments. This USA-made cable features eight 18-gauge stranded bare copper conductors with 7 strands each, protected by aluminum mylar shielding and housed in a low-smoke CMP-rated white jacket. Designed for demanding security systems, intercoms, audio distribution, and power-limited controls where maximum protection, fire safety, and multi-zone capability are essential.
Key Features
- 18 AWG 8-Conductor Configuration - Heavy-duty wire gauge with maximum versatility for complex systems
- Aluminum Mylar Shielding - Superior protection against electromagnetic interference (EMI/RFI)
- 7-Strand Bare Copper Conductors - Excellent flexibility and reliable signal integrity
- CMP/CL3P Plenum Rated - Approved for HVAC plenums and air-handling spaces
- Low-Smoke PVC Construction - Enhanced fire safety with minimal toxic smoke emission
- 8 Color-Coded Conductors - Easy identification for complex wiring (Black, Red, White, Green, Brown, Blue, Orange, Yellow)
- Sequential Footage Marking - Precise measurement for accurate installation planning
- ETL Listed & RoHS Compliant - Meets strict safety and environmental standards
- White Low-Smoke Jacket - Clean, professional appearance for visible installations
- Made in USA - Premium domestic manufacturing quality
Ideal Applications
Perfect for high-security and EMI-sensitive plenum installations:
- Enterprise-Grade Security & Alarm Systems
- Commercial Access Control Systems
- Professional Intercom Systems
- Multi-Zone Audio Distribution
- Power-Limited Control Circuits
- Building Automation & Management Systems
- Critical Infrastructure Protection
Technical Specifications
- Conductor Material: Stranded Bare Copper
- Wire Gauge: 18 AWG
- Number of Conductors: 8
- Strands per Conductor: 7
- Conductor Insulation: 1.2mm Low-Smoke PVC
- Shielding: Aluminum Mylar (100% Coverage)
- Cable Diameter (Nominal OD): 6.58mm
- Jacket Thickness: 0.38mm
- Jacket Material: Low-Smoke PVC
- Jacket Color: White
Electrical Performance
- Maximum Temperature: 75°C (167°F)
- Voltage Rating: 300V
Certifications & Compliance
- Plenum Rating: CMP (Communications Plenum)
- Additional Ratings: CL3P, FPLP
- Listings: ETL Listed
- Environmental: RoHS Compliant
Conductor Color Coding
- Conductor 1: Black
- Conductor 2: Red
- Conductor 3: White
- Conductor 4: Green
- Conductor 5: Brown
- Conductor 6: Blue
- Conductor 7: Orange
- Conductor 8: Yellow
Package Details
- Length: 1000 feet per spool
- Country of Origin: Made in USA
Why Choose Shielded 18/8 Plenum Cable?
✓ EMI/RFI Protection - Aluminum mylar shielding prevents interference from electrical equipment, motors, and radio frequencies
✓ Maximum Conductor Count - Eight conductors provide ultimate flexibility for integrated multi-system installations
✓ Heavy-Duty Construction - 18 AWG wire gauge supports longer cable runs with minimal voltage drop
✓ Fire Code Compliant - CMP plenum rating meets stringent requirements for air-handling spaces
✓ Low Smoke Safety - Special insulation reduces toxic emissions during fire emergencies
✓ Professional Installation - Color-coded conductors and sequential marking streamline complex installations
✓ Future-Proof Design - Extra conductors allow for system expansion without re-cabling
Common Use Cases
- Commercial Security: Enterprise-grade multi-zone systems with EMI protection
- Data Centers: Security systems near high-EMI server equipment
- Industrial Facilities: Alarm systems in manufacturing environments with heavy machinery
- Healthcare: Hospital security with protection from medical equipment interference
- Financial Institutions: Bank vault and ATM security requiring maximum signal integrity
- Government/Military: Critical infrastructure protection with shielding requirements
- Educational Campuses: Large-scale integrated security and access control
- Retail: Loss prevention systems with multiple zones and integrated POS monitoring
- Multi-Tenant Buildings: Separate security systems for each tenant or floor
- Smart Buildings: Integration of security, HVAC, lighting, and access control
Technical Advantages
- Lower Resistance: 18 AWG provides approximately 40% lower resistance than 22 AWG
- Longer Runs: Supports cable runs up to 30% longer than equivalent 22 AWG cable
- Higher Current: Can handle more power for devices like magnetic locks or powered sensors
- Signal Quality: Heavier gauge maintains signal integrity over distance
- Durability: More robust construction withstands pulling forces during installation
- Future-Ready: Eight conductors accommodate system upgrades without rewiring