When selecting cables, it's common to encounter confusion between different single-core cable models. Among them, H05 and H07 Single Core Cables are widely used, yet they serve different applications and performance requirements. Choosing the wrong type may affect installation safety and equipment reliability. This article explains the key differences between H05 and H07 Single Core Cables clearly and accurately, helping you make the right decision for your project.
Definition and Standards of H05 and H07 Single Core Cable
H05 Single Core Cable
H05 single core cable is a light-duty flexible wire, designed primarily for indoor applications and equipment with lower voltage requirements. It complies with IEC 60227 / EN 50525-2-31 standards. The "05" in its designation indicates a rated voltage of 300/500V, making it suitable for domestic appliances, office devices, and light electrical tools.
H07 Single Core Cable
H07 single core cable, on the other hand, is a medium to heavy-duty flexible wire, used in industrial environments that demand higher mechanical and thermal resistance. It meets IEC 60245 / EN 50525-2-81 standards, with "07" representing a rated voltage of 450/750V. Its rubber insulation offers excellent durability and flexibility under harsh conditions.
Common Types of H05 Single Core Cable
| Model | Conductor | Insulation | Features & Applications |
|---|---|---|---|
| H05V-U | Solid copper | PVC | Cost-effective for fixed wiring such as lighting and electrical boxes |
| H05V-K | Stranded copper (flexible) | PVC | High flexibility for internal wiring and complex installation paths |
| H05Z-K | Stranded copper | LSZH (Low Smoke Zero Halogen) | Safer flame-retardant option for public buildings and enclosed spaces |
Common Types of H07 Single Core Cable
| Model | Conductor | Insulation | Features & Applications |
|---|---|---|---|
| H07V-U | Solid copper | PVC | Suitable for fixed wiring in distribution networks |
| H07V-R | Stranded round copper | PVC | More flexible than H07V-U, commonly used in control panels |
| H07V-K | Fine stranded copper (high flexibility) | PVC | Ideal for industrial machinery, cable ducts, and vibration environments |
Key Differences Between H05 and H07 Single Core Cables
| Item | H05 Series | H07 Series |
|---|---|---|
| Rated Voltage | 300/500V | 450/750V |
| Conductor Range | Mainly small to medium cross-sections | Allows larger conductor cross-sections |
| Mechanical Strength | Light-duty | Heavy-duty and more robust |
| Application Environment | Indoor, low-risk | Indoor/outdoor, industrial power systems |
| Cost Level | Lower | Higher, but longer service life |
Technical Parameter Comparison
| Parameter | H05V-K Example | H07V-K Example |
|---|---|---|
| Rated Voltage | 300/500V | 450/750V |
| Conductor Operating Temperature | -5°C to +70°C | -15°C to +70°C |
| Conductor Resistance (20°C) | Higher | Lower (better conductivity stability) |
| Current Carrying Capacity | Relatively lower | Higher at the same cross-section |
| Mechanical Durability | Standard | Enhanced for heavy use |
Key Point:
H07 cables offer better durability and current performance, making them more suitable for industrial and continuous operation environments.
Differences in Application Scenarios
- Choose H05 when wiring household appliances, office lighting circuits, and small power devices where load and heat exposure are minimal.
- Choose H07 when wiring building power distribution, factory machine systems, control cabinets, or equipment that operates long hours and may experience vibration or higher stress.
How to Select the Right Cable
For an industrial automation machine that runs continuously with noticeable vibration, selecting H05 may result in insulation aging and electrical instability.
In this case, H07V-K, with its flexible conductor and stable electrical performance, ensures reliable long-term operation and reduces maintenance costs.
Similarly, for residential distribution board wiring, H07V-R or H07V-U are typically preferred for safety and durability.
Why Choose Dongguan Greater Wire & Cable Co., Ltd.
At Dongguan Greater Wire & Cable Co., Ltd., we manufacture and supply premium-quality H05 and H07 single core cables that meet international standards (VDE, CE, HAR). Our products are widely used across Europe, the Middle East, and Asia - trusted for stability, safety, and long service life.
Our Advantages:
- Full compliance with IEC and EN standards
- OEM/ODM service available for customized specifications
- Large inventory and fast delivery for both small and large orders
- Comprehensive technical support from our professional pre-sales and after-sales teams
- Competitive factory pricing directly from the manufacturer
No matter your project size - from small appliance manufacturing to large-scale industrial installations - we provide the right solution and technical support you need.
📞 Contact Us Today:
- Dongguan Greater Wire & Cable Co., Ltd.
- Tel/WhatsApp/WeChat: +86 135 1078 4550 / +86 136 6257 9592
- Email: manager01@greaterwire.com
Let's power your business with safe, reliable, and efficient H05 & H07 single core cables - built for performance, certified for quality.