H07V-K
Application and Description
These are not suitable to be installed for laying in tubes, under and surface mounting of plaster and also in closed installation conduits.
These are not allowed to install for direct laying on cable trays, channel or tanks. These types are permitted for the inner wiring of equipment, distributor and switchboards and also for protective laying to the lightings with a nominal voltage up to 1000 V alternating current or up to 750 V direct current against earth.
Standard and Approval
CEI 20-20, CEI20-52, HD 21.3 S3
CE Low Voltage Directive 73/23/EEC and 93/68/EEC, ROHS compliant
Cable Construction
Technical Characteristics
Fine bare copper strands |
Strands to VDE-0295 Class-5, IEC 60228 Class-5 |
Special PVC TI1 core insulation |
Cores to VDE-0293 colors on chart |
Working voltage | 450/750V |
Test voltage | 2500 volts |
Flexing bending radius | 12.5 x O |
Static bending radius | 12.5 x O |
Flexing temperature | -5o C to +70o C |
Static temperature | -30o C to +80o C |
Short circuit temperature | +160o C |
Flame retardant | IEC 60332.1 |
Insulation resistance | 10 MΩ x km |
Cable Parameter
AWG | No. of Cores x Nominal Cross Sectional Area | Nominal Thickness of Insulation | Nominal Overall Diameter | Nominal Copper Weight | Nominal Weight |
| # x mm^2 | mm | mm | kg/km | kg/km |
16(30/30) | 0,7 | 3.1 | 14.4 | 20 | |
14(50/30) | 0,8 | 3.6 | 24.0 | 31 | |
12(56/28) | 0,8 | 4.3 | 38.0 | 48 | |
10(84/28) | 0,8 | 4.9 | 58.0 | 69 | |
8(80/26) | 1,0 | 6.4 | 96.0 | 121 | |
6(128/26) | 1,0 | 8.1 | 154.0 | 211 | |
4(200/26) | 1,2 | 9.8 | 240 | 303 | |
2 (280/26) | 1,2 | 11.1 | 336 | 417 | |
1 (400/26) | 1,4 | 13.1 | 480 | 539 | |
2/0 (356/24) | 1,4 | 15.5 | 672 | 730 | |
3/0 (485/24) | 1,6 | 17.2 | 912 | 900 | |
4/0 (614/24) | 1,6 | 19.7 | 1152 | 1135 | |
300 MCM (765/24) | 1,8 | 21.3 | 1440 | 1410 | |
350 MCM (944/24) | 2,0 | 23.4 | 1776 | 1845 | |
500MCM(1225/24) | 2,2 | 27.1 | 2304 | 2270 |
Introduction to the H07V-K Cable
The H07V-K cable is a single-core, flexible, PVC-insulated wire widely used in electrical installations across South Africa and beyond. Known for its versatility and compliance with stringent international standards, this cable is a go-to choice for internal wiring in equipment, switchboards, and lighting systems. Whether you're an electrician in Johannesburg or a homeowner in Cape Town upgrading your lighting, understanding the H07V-K cable’s specifications and applications can help ensure safe and efficient electrical setups.
Technical Specifications of the H07V-K Cable
The H07V-K cable is designed with precision to meet global safety and performance standards. Below are its key technical details:
Conductor: Made of fine bare copper strands, adhering to VDE-0295 Class-5 and IEC 60228 Class-5 standards, ensuring high flexibility and conductivity.
Insulation: Special PVC TI1 core insulation, which provides excellent electrical insulation and flame-retardant properties as per IEC 60332.1.
Core Colors: Follows VDE-0293 color coding for easy identification during installation.
Voltage Ratings: Suitable for working voltages up to 450/750V (alternating current) and test voltages of 2500V.
Bending Radius: Both flexing and static bending radius is 12.5 times the cable’s overall diameter, allowing for easy installation in tight spaces.
Temperature Range:
Flexing: -5°C to +70°C
Static: -30°C to +80°C
Short circuit: Up to +160°C
Insulation Resistance: 10 MΩ x km, ensuring minimal leakage and high safety.
Standards and Approvals: Complies with CEI 20-20, CEI 20-52, HD 21.3 S3, CE Low Voltage Directive 73/23/EEC and 93/68/EEC, and is ROHS compliant.
The cable comes in various sizes, from 1.5 mm² (AWG 16) to 240 mm² (500 MCM), with corresponding nominal insulation thickness and overall diameters. For example, a 1 x 1.5 mm² cable has a nominal insulation thickness of 0.7 mm and an overall diameter of 3.1 mm, while a 1 x 240 mm² cable has a 2.2 mm insulation thickness and a 27.1 mm diameter.
Applications of the H07V-K Cable
The H07V-K cable is a versatile wiring solution, but it’s not a one-size-fits-all product. Its design makes it ideal for specific scenarios, particularly in South Africa’s diverse electrical landscape:
Internal Wiring: Perfect for wiring inside electrical equipment, distribution boards, and switchboards. For instance, in Durban’s industrial parks, H07V-K cables are commonly used in control panels for manufacturing machinery.
Lighting Systems: Suitable for protective laying to lighting fixtures with nominal voltages up to 1000V AC or 750V DC against earth. In Pretoria’s residential areas, these cables are often used in home lighting installations for their flexibility and safety.
Fixed Installations: Ideal for installations in closed conduits or under plaster, commonly seen in South African office buildings and shopping centres like Sandton City.
However, the H07V-K cable is not suitable for:
Direct laying on cable trays, channels, or tanks.
Outdoor or exposed installations without additional protection.
A notable South African case is the use of H07V-K cables in the electrification of informal settlements. In projects like those in Khayelitsha, Cape Town, these cables have been used for safe internal wiring in community centres, ensuring reliable power distribution while meeting strict safety standards.
Advantages of the H07V-K Cable
The H07V-K cable offers several benefits that make it a top choice for electricians and engineers in South Africa:
Flexibility: Its Class-5 copper strands allow for easy bending and installation in confined spaces, such as in the intricate wiring setups of Johannesburg’s high-rise buildings.
Flame-Retardant: The PVC insulation meets IEC 60332.1 standards, reducing fire risks in densely populated areas like Soweto.
Wide Temperature Range: With a static temperature range of -30°C to +80°C, it’s well-suited for South Africa’s varied climates, from the chilly winters of the Free State to the humid summers of KwaZulu-Natal.
Compliance with Standards: Adherence to CE and ROHS directives ensures it meets global safety and environmental requirements, critical for projects funded by international development agencies in South Africa.
Variety of Sizes: Available in a range of cross-sectional areas, from 1.5 mm² to 240 mm², catering to both small-scale residential and large-scale industrial needs.
Frequently Asked Questions (FAQs)
Q1: Can the H07V-K cable be used outdoors in South Africa?
A: No, the H07V-K cable is not designed for direct outdoor use or exposure to elements. It’s best used in protected environments like conduits or inside equipment. For outdoor applications, consider cables with UV-resistant or weatherproof insulation.
Q2: Is the H07V-K cable suitable for high-power applications?
A: Yes, with sizes up to 240 mm², it can handle significant power loads, such as in industrial switchboards. However, ensure the cable size matches the load requirements, as specified in the cable parameter table.
Q3: How does the H07V-K cable contribute to safety in South African homes?
A: Its flame-retardant PVC insulation and high insulation resistance (10 MΩ x km) reduce the risk of electrical fires and shocks, making it a safe choice for homes in areas like Bloemfontein, where electrical safety is a priority.
Q4: Where can I source H07V-K cables in South Africa?
A: Major electrical suppliers in cities like Cape Town, Johannesburg, and Durban stock H07V-K cables. Always purchase from reputable suppliers to ensure compliance with CE and ROHS standards.
Q5: Can the H07V-K cable be used in South Africa’s rural electrification projects?
A: Yes, its flexibility and safety features make it ideal for internal wiring in rural community centres or schools, as seen in projects in Limpopo and the Eastern Cape.
The H07V-K cable is a reliable and versatile solution for South Africa’s electrical wiring needs, from urban skyscrapers to rural community projects. Its flexibility, flame-retardant properties, and compliance with international standards make it a trusted choice for electricians and engineers. Whether you’re wiring a new home in Pretoria or upgrading a factory in Port Elizabeth, understanding the H07V-K’s specifications and applications ensures safe and efficient installations. For more technical details or to source these cables, consult local suppliers or refer to standards like CEI 20-20 and HD 21.3 S3.
