Parallel drop wire telephone cables are specifically engineered for extending telecommunications connections from distribution points to subscriber premises. These cables provide reliable transmission between pole-mounted terminals, cable distribution points, and residential or commercial buildings, ensuring consistent telephone service delivery.
Applications
- Last-mile connectivity: Extension from distribution poles to subscriber buildings
- Premises wiring: Connection between outdoor distribution points and indoor telephone systems
- Service drops: Direct connection from main distribution cables to individual properties
- Rural and urban telecommunications: Suitable for various environmental conditions
Technical Standards & Specifications
| Model | Standard | Conductor Specification | Insulation Type |
|---|---|---|---|
| Drop Wire No. 1 | CW 1166 | Solid cadmium copper 0.91mm (BS 4807) | PVC (BS 6746 T1) |
| Drop Wire No. 2 | CW 208 | Solid copper clad steel 0.71mm (BS 4807) | PVC (BS 6746 T2) |
| Drop Wire No. 6 | CW 1247 | Solid copper clad steel 0.81mm (BS 4807) | PVC (BS 7878 T1) |
| Drop Wire No. 8 | CW 1320A | Solid cadmium copper 1.14mm (BS 4807) | PVC (BS 6746 T1) |
Construction Features
Conductor Design
- Dual-purpose construction: Copper clad steel conductors serve simultaneously as electrical conductors and mechanical strength members
- Material composition: High-quality steel core with copper cladding for optimal conductivity and tensile strength
- Precision manufacturing: Consistent diameter and conductivity throughout cable length
Cable Configuration
- Parallel layout: Two conductors arranged in figure-8 configuration for easy installation and handling
- Integrated design: Conductors are extruded parallel for uniform performance and simplified termination
Insulation System
- Material options:
- Low-density polyethylene (LDPE)
- Medium-density polyethylene (MDPE)
- Polyvinyl chloride (PVC)
- Enhanced bonding: Superior adhesion between insulation and conductors ensures complete strength transfer to support clamps
- Weather resistance: UV-stable compounds for long-term outdoor performance
Mechanical Properties
- Strength integration: Full conductor tensile strength effectively transferred through bonded insulation to wire support hardware
- Installation flexibility: Figure-8 design allows for easy separation of conductors during termination
- Durability: Robust construction withstands installation stresses and environmental conditions
Key Advantages
Electrical Performance
- Excellent signal transmission characteristics
- Low resistance for reliable voice and data communication
- Consistent impedance matching
Mechanical Reliability
- High tensile strength for secure aerial installations
- Integrated strength members eliminate need for separate messenger wire
- Superior bonding prevents conductor pullout
Installation Benefits
- Simplified installation process with integrated strength design
- Easy conductor separation for termination
- Compatible with standard telecommunications hardware
Environmental Durability
- Weather-resistant insulation compounds
- UV protection for extended outdoor service life
- Temperature stability across wide operating range
Installation Guidelines
- Suitable for aerial installation between poles and buildings
- Compatible with standard telecommunications clamps and hardware
- Recommended for spans up to [specific distance based on conductor size]
- Proper grounding and bonding required per local telecommunications standards
Quality Assurance
All products manufactured to relevant British Standards (BS) specifications, ensuring consistent quality and performance. Regular testing protocols verify electrical, mechanical, and environmental performance characteristics.