YDY installation cables are very popular among installers due to their versatility, durability and safety of use, as well as their unique design, which significantly facilitates and speeds up installation work. See the ranking of the 5 best YDY cables and wires available at the Onninen electrical wholesaler, which will work well in both home and industrial installations.
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What are YDY cables and what should you consider when choosing them?
Electrical installations and devices have different requirements, which requires the use of electrical wires with specific parameters. To facilitate the selection of appropriate cables and wires, manufacturers use letter markings. The first letter in the marking indicates the material of the sheath, the second the construction of the core, and the third the insulation material. Most wires used today are copper - this material does not require marking.
YDY is a round, single-wire, multi-core copper wire with insulation and sheath made of ordinary PVC. It is characterized by a rigid structure and high resistance to mechanical damage and moisture. It is used in the transmission of electricity in dry and wet places. It is suitable for sub- and surface mounting. It is mainly used for connecting electrical installation equipment. It is available in versions for voltages of 300/500V and 450/750V. The designation "ŻO" indicates the presence of a protective conductor in yellow-green.
When choosing YDY installation cables, it is worth paying attention primarily to:
- number and cross-section of veins,
- rated voltage,
- permissible ambient temperature,
- quality of workmanship and manufacturer's reputation,
- properties necessary for a given application.
In addition to the round YDY cables, there are also YDYp flat cables on the market. The letter "p" indicates a flat cable. YDYp cables are designed for installation in dry rooms, on- and under-plaster.
1. Installation cable NKT YDY ŻO 3x1.5 750V
The ranking opens with the YDY installation cable from NKT – one of the leading manufacturers 
wiring. This is a 3-core model with class 1 copper wire. It is used to transmit electricity in surface and subwall installations. It can be used in dry and damp rooms, at temperatures in the range of 40-70o C, in both domestic and light industrial installations.
YDY round multi-core cables and YDYp flat cables from NKT are among the most frequently chosen installation cables by professionals. They have a unique insulating compound that provides softness and plasticity, which makes the processing and installation of cabling much easier. The cables do not spring back, so when laid on flat surfaces they do not stick out, and when unrolled they do not curl. They are easy to lay even on bends. Special extrusion technology minimizes the risk of the core insulation sticking to the outer sheath. Solid insulation and outer sheath provide resistance to moisture and mechanical damage.
2. Top Brand installation cable YDY 2x2.5 750V
Some of the most frequently chosen installation cables by professionals are products from selected, top suppliers of the Onninen wholesaler (Top Brands).
The bestseller is a two-core cable with a cross-section of 2.5 mm². It is ideal for simple power installations that do not require a protective conductor. It can be used in dry and damp rooms, at temperatures in the range of 40-70o C.
3. Top Brand installation cable YDY ŻO 3x1.5 750V
The next product in the ranking also comes from the portfolio of top suppliers of the Onninen wholesaler 
(Top Brands). This is a YDY installation cable with a 3x1.5 750V protective wire. Like its predecessor, it is distinguished by an exceptionally good price-quality ratio. It provides the transmission of electricity in surface- and subwall installations, in dry and damp rooms, at temperatures in the range of 40-70o C. It has many positive opinions from users. This is an excellent choice for investors looking for proven, safe and durable solutions at an affordable price.
4. Top Brand Installation Cable YDY ZO 5x2.5
750V
The next cable in the ranking also comes from the offer of top suppliers of the Onninen wholesaler (Top Brands). This is a five-core installation cable with a cross-section of 2.5 mm², with class 1 copper wire. It provides the transmission of electricity in surface and subwall installations, in dry and damp rooms, at a temperature of 40-70o C. It is often chosen for home, industrial and commercial installations.
5. 5. Installation cable NKT YDY ŻO 3x2.5 750V
The ranking is closed by the three-core YDY cable from NKT, with a cross-section of 2.5 mm². It provides energy transfer 
electrical in demanding surface-mounted and flush-mounted installations. It can be used in dry and damp rooms, at temperatures of 40-70o C, in home, industrial and commercial systems. NKT cabling is renowned for its reliability and functionality, which translates into efficient assembly and long service life of the installation.
Comparison of the top 5 best YDY wires and cables
| Name | Number of cores x cross-section | Nominal voltage U | Protective wire | Manufacturer/brand |
|---|---|---|---|---|
| NKT YDY 3x1.5 | 3x1.5mm² | 750V | Yes | NKT |
| Top Brands YDY 2x2.5 | 2x2.5mm² | 750V | NO | Top Brands |
| Top Brands YDY 3x1.5 | 3x1.5mm² | 750V | Yes | Online/Top Brands |
| Top Brands YDY 5x2.5 | 5x2.5mm² | 750V | Yes | Top Brands |
| NKT YDY 3x2.5 | 3x2.5mm² | 750V | Yes | NKT |
Summary
YDY cables are the foundation of a modern electrical installation – domestic, commercial and industrial. They should have parameters adapted to the type of installation, type and power of connected devices and the length of the cable route. By purchasing YDY cables from the ranking, you gain certainty of their high quality, compliance with standards, durability and ease of installation.
At the Onninen electrical wholesaler , cables and wires tailored to each installation are waiting. This category consists of almost 65 thousand products available off-the-shelf or to order. Contact us to take advantage of professional technical support.