In electrical installations, selecting the right cable ensures safety, compliance, and long-term reliability. SDI Cable (Single double insulated Cable) is a versatile wiring solution widely used in switchgear, control panels, and fixed installations across residential, commercial, and industrial projects. This blog delves into its key features, applications, and critical design choices—such as insulation color coding and dual-layer insulation—to help you make informed decisions.
What is SDI Cable?
SDI Cable is a standardized sheathed wire designed for safe and efficient electrical wiring. Its structure includes:
- Conductor: Stranded or solid copper compliant with AS1125 standards.
- Insulation: Special PVC V-90 core insulation (available in black, red, white, or custom colors).
- Sheath: Robust PVC 3V-90 outer sheath for mechanical protection.
Approved by Australian SAA certification, it is ideal for projects in Australia, New Zealand, and other regulated markets.
Key Features of SDI Cable
- Easy Installation: Flexible design simplifies routing through conduits or trunking.
- Safety Compliance: Passes flame-retardant tests and meets RoHS environmental standards.
- Durability: Resists wear, impact, and environmental stressors, ensuring a lifespan of over 40 years.
- Adaptability: Suitable for temperatures ranging from -40°C to 90°C.
Application Scenarios
- Switchgear & Control Panels: Internal wiring for electrical cabinets and industrial automation systems.
- Building Installations: Fixed wiring in residential/commercial buildings, prefabricated homes, and temporary structures.
- Harsh Environments: Direct burial, underground conduits, or mobile settings (e.g., caravans, refrigeration units).
Black vs Red Insulation: What’s the Difference?
While both colors offer identical electrical and mechanical performance, they serve distinct purposes in wiring practices:
- Black Insulation: Typically used for neutral wires or general circuit connections.
- Red Insulation: Designates phase/live wires or critical circuits, aiding quick identification during installation and maintenance.
Custom color coding is available to align with project-specific safety protocols.
Why Choose Dual-Layer Insulation?
SDI Cable’s dual-layer PVC insulation (core + sheath) provides added advantages:
- Enhanced Safety: Reduces risk of short circuits by preventing conductor exposure.
- Mechanical Protection: Resists abrasion, chemicals, and physical damage.
- Longevity: Dual layers mitigate insulation degradation under prolonged stress.
- Compliance: Exceeds safety standards for fixed installations in high-demand environments.
Why Choose JZD Cable?
At JZD Cable, we engineer SDI Cables to deliver unmatched reliability and compliance. Our products are:
✅ SAA-Certified for Australian/New Zealand markets
✅ RoHS-Compliant with flame-retardant properties
✅ Customizable in colors and specifications
Whether for industrial switchgear or residential projects, JZD Cable combines rigorous testing with practical innovation. Explore our range at jzdcable.com and power your projects with confidence!
