data center cables
Data centers are the backbone of the digital economy. But behind every server rack and switch lies a critical question that procurement professionals and engineers ask every day: what type of cable is used for data centers?
Generally, standalone server rooms don’t require all types of cabling. Small data centers typically use only low-voltage cables, network cables, and fiber optics. Large integrated data centers (IDC) and artificial intelligence computing centers, however, require a complete cabling solution, including voltage cables, photovoltaic cables, copper cables, fiber optics, and control cables. I will now explain in detail and recommend suitable data center cabling solutions.
Our ZMS engineering team always emphasizes: Power cables determine the entire data center’s safety level. Network cables only affect transmission speed, but unqualified power cables will lead to fire hazards, power tripping and entire server downtime. This is why formal IDC projects put power cable selection in the first place.
Whether you build a small enterprise computer room or a super large AI data center, low-voltage cables are indispensable. They are widely used for UPS systems, distribution cabinets, busbars and all indoor equipment power supply circuits.
In our opinion, WDZA-YJY LSZH Class A flame-retardant cable is absolutely the mainstream and safest choice for modern IDC. Traditional PVC cables produce dense toxic smoke during combustion, which will completely block fire escape routes and damage expensive server equipment. In contrast, LSZH low smoke zero halogen material releases almost no toxic gas, making it specially suitable for closed cold aisles, cable tunnels and densely arranged machine rooms.
To help you quickly select the right low-voltage cables for data center projects, we have sorted out the core parameters, advantages and applicable scenarios of all mainstream models in a detailed comparison table below. This avoids selection confusion and helps you complete efficient and compliant procurement:
| Cable Model | Core Features | Applicable Scenarios |
| WDZA-YJY 0.6/1kV | LSZH Class A flame-retardant, low smoke, zero halogen, non-toxic, high safety level | Main power distribution for modern IDCs, UPS systems, closed cold aisles, dense cable tunnels |
| WDZN-YJY 0.6/1kV | LSZH, flame-retardant and fire-resistant, can maintain power supply in fire conditions | Emergency lighting systems, fire protection linkage equipment, backup power circuits |
| YJV 0.6/1kV | XLPE insulation, stable performance, cost-effective, general flame resistance | Auxiliary general power distribution, non-core equipment power supply, ordinary server rooms |
| BVR Flexible Copper Wire | Soft conductor, easy to bend and install, stable grounding performance | Internal wiring of distribution cabinets |
| LSZH DC Special Cable | Low smoke zero halogen, DC voltage resistance, dedicated for energy storage scenarios | Energy storage battery cabins, 800V HVDC rack power supply systems |
Many customers misunderstand that all data centers need high-voltage cables. We want to clarify this point clearly. Medium-voltage cables are only used in large and super data center parks. For different laying environments, we recommend different models: YJV-8.7/15kV cables are suitable for indoor bridge laying;
Armored YJV22 cables resist strong external pressure and are perfect for direct burial in outdoor roads;
WDZA-YJY23 armored LSZH flame-retardant cables are the first choice for current high standard data center parks, balancing fire safety, mechanical protection and environmental performance.
It is worth noting that no medium-voltage cables enter the server room. After step down by transformers, all power is converted to low-voltage transmission to ensure equipment and personnel safety.
Many buyers often ask us: Can I use ordinary power cables to replace PV cables for solar systems? Our answer is definitely no.
PV1-F and H1Z2Z2-K solar cables are professional DC photovoltaic wires, specially designed for outdoor harsh environments. They feature UV resistance, high and low temperature resistance, and anti-aging performance, which ordinary cables do not have. They are only used for the DC side connection between solar panels, combiner boxes and inverters.
For market selection, PV1-F 1500V DC cables with TUV certification are popular in Southeast Asia, the Middle East and Africa; European standard H1Z2Z2-K LSZH solar cables are more suitable for European local projects.
Key reminder for all buyers: After the inverter converts DC to AC power, you must switch to WDZA-YJY low-voltage cables for indoor power supply. PV cables are never allowed inside server rooms.
Copper cables remain the workhorse of short-distance data transmission within data centers, offering a cost-effective solution for server-to-switch connections.
ZMS cable offers a full spectrum of copper cabling solutions, from Cat5e to Cat8, all manufactured to meet TIA/EIA-568 standards with rigorous performance testing.
From our years of project experience, optical fiber quality directly determines the data center’s overall operation speed.
OM3 and OM4 multi-mode MPO/MTP pre-terminated fibers are the mainstream choice for short-range 10G to 400G TOR switch connection. Pre-terminated design saves a lot of on-site splicing time and is very suitable for rapid deployment of large-scale IDC. For long‑distance cross-building and cross-zone high-speed transmission up to 800G, G.652D single-mode optical cables are the standard configuration. Indoor breakout fibers and tight-buffered fibers are used for refined wiring inside server racks.
Many customers only pay attention to power and network cables but ignore control cables. We think this is a potential safety hazard.
ZR-RVVP shielded control cables undertake fire detection and linkage signal transmission tasks. They can ensure that the fire alarm system responds quickly and accurately in case of emergencies, which is an important part of data center safety protection systems.
To sum up, data center cable matching must be based on project scale and functional positioning. Small server rooms only need low-voltage power cables and network wiring. Large IDC parks and green energy computing centers need a full set of medium-voltage cables, LSZH low-voltage cables, PV solar cables, network cables and optical fibers.
Choosing the right cables is far more important than blindly pursuing low prices. Professional IDC dedicated cables can avoid fire risks, network instability and project acceptance failures, saving huge hidden costs for your project.
As a leading global cable supplier with over 30 years of experience, ZMS cable is your trusted partner for data center cabling projects. From technical consultation and custom manufacturing to on-time delivery, we provide end-to-end solutions for clients in over 183 countries.
Contact ZMS to discuss your project requirements and get more information about data center cables.
As global energy structures transform and intelligent manufacturing and sustainability continue to advance, the advanced…
When people hear the term mineral insulated cable, many immediately think of harsh environments like…
As telecommunication networks and power transmission systems grow rapidly, the demand for reliable and cost-effective…
In large-scale oil and gas projects, industrial cables are not just accessories—they are the "nervous…
In the world of electrical connections, cable lugs—also known as cable ears or cable terminals—are…
When choosing the right rubber cable for an electrical engineering project, it is critical to…