Exploring the Types and Sizes about Low Voltage Cable

Low voltage cable is a common type of electrical cable designed to transmit electricity, current or signals at low voltage levels. Distinguished by the voltage level, electrical cable can be divided into low voltage cable, medium voltage cable and high voltage cable, LV cable can withstand the voltage of 0.6kv/1kv, able to enter the field of long-distance power transmission. Now let’s take a detailed look at the low voltage cables!

What is low voltage cabling?

Low voltage cabling refers to the installation of electrical cable at lower voltage levels. It is typically used for house wiring, network connections, data transfer, and communication systems. Low-voltage cabling employs a structured cabling architecture, which offer convenience to the cable installation, management, and maintenance. When wiring low voltage cable, it is critical to understand the proper installation, which is related to signal integrity, interference protection, and safety. The standard conductor material for low-voltage cable is copper or aluminum, and covered with xlpe insulation and pvc sheath. Because low voltage cabling is essential for enabling communication, connectivity, and automation in a variety of situations, it is crucial that people become acquainted with low-voltage cable systems and the many types of low voltage cables.

What are Low voltage cable types?

There are several low voltage cable types, each designed for specific purposes within different applications. Here are some common types of low voltage cables.

PVC insulated Cable

PVC (polythene)insulated cable is a type of low voltage cable, which refers to the use of PVC material for the insulation wrapped with conductor. PVC material has good electrical properties such as flexibility, making it easier to bend the cable for wiring in tight spaces, and moisture resistance, making the cable better suited to the environment.

PVC insulated Cable

PVC insulated cables can withstand a maximum of 90 degrees Celsius, and are available in different colors for people to differentiate and identify them. Generally, pvc insulated cables can be used for wiring low voltage systems such as indoor and inside buildings to help distribute power and control circuits. It can be single-core, multi-core and twisted and is cost-effective to produce. Special consideration should also be given to the specifications for the use of PVC insulated cables.

XLPE insulated Cable

XLPE insulated cable means that the cable is insulated using xlpe material as the conductor. XLPE is a thermoset polymer with good thermal stability, moisture resistance and chemical resistance, and can withstand temperatures up to 130°C, allowing the cable to operate effectively even under high temperature conditions. At the same time, XLPE is also resistant to UV radiation, giving the cable a longer service life and minimizing the loss of signals and power during transmission.

XLPE insulated cable

In addition, XLPE is an environmentally friendly material, which can reduce the smoke emissions from the cable when a fire occurs. xlpe insulated cables are mainly used in industrial, underground and other long-distance transmission of power and signal occasions, which can more effectively keep the cable running smoothly. xlpe insulated cables have high requirements for installation, and when installing the cable, people have to refer to its wiring requirements.

Flexible Cable

Flexible cable, as the name suggests, refers to a highly flexible low-voltage cable that supports repeated bending and twisting without damaging the conductors during installation. The conductor of a flexible cable is made up of several thin wires that are twisted together to provide mobility, flexibility and durability. Flexible cables are usually sheathed to protect the conductors and insulation of the cable. It is therefore resistant to abrasion and chemicals.

Flexible cable

Flexible cables are frequently used in low voltage cable lighting and sound equipment, automation equipment, medical diagnostic equipment, aeronautical equipment and other applications requiring great cable flexibility. Although flexible cables are incredibly flexible, it is important to pay attention to the low-voltage cable specifications when installing them to ensure that the electrical cables run safely and properly and to prevent over-bending or stretching, which might reduce the electrical performance.

flexible cable
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LSZH Cable

LSZH cable refer to Low Smoke and Halogen Free cable, which are insulated with low smoke and halogen free materials, emit very little smoke in the event of a fire and do not produce halogen gases that are harmful to humans and equipment. Suitable for enclosed spaces or areas with limited ventilation, such as public buildings, transport systems and basements, where the emission of smoke is critical, lszh cables maintain visibility in the event of a fire, allowing for better evacuation of people.

LSZH cable

Moreover, it also belongs to the category of cables made of environmentally friendly materials, which are more in line with fire safety and environmental norms.The choice of lszh power cable depends on the local norms, environmental conditions, and budget, etc., and people can consult the professional electrician.

Mineral insulated cable

Mineral insulated cable can also be named as MI cables or mineral insulated metal cables(MIMC), this type of lowvoltage cable consists of a conductor made of metallic materials (copper, stainless steel etc.) and a highly compressed insulation made of magnesium oxide material, which is wrapped in a metallic sheath. This construction gives mineral insulated cables good fire resistance, durability and high insulation, etc. MI cables are generally used in defense, petrochemical facilities and power plant applications, where the signal is kept intact and the cables are arbitrarily resistant to mechanical damage, chemical attack and abrasion.

Mineral insulated cable

Due to its use of magnesium oxide material, which is non-flammable, this cable can also withstand high temperatures and flames. Mineral insulated cables are expensive to produce and are more commonly used in extreme conditions. Consult an experienced electrician for installation.

Then, we can study the low voltage cables sizes.

Low voltage cable size

People can choose various sizes of low voltage cables for using, which vary depending on several factors including temperature, voltage rating, current carrying capability, and different types of lv cable. Below is the low voltage cable size chart that you can referred.

Low voltage cable size(mm²)Insulation thickness(mm)Reference weight(kg/100m)Reference diameter(mm)
2.50.74.473.82
40.76.524.34
60.710.946.00
100.716.447.00
160.725.868.70
250.734.849.80
350.947.6311.50
501.067.4513.30
701.193.0815.50
951.1114.5416.30
1201.2141.8818.10
150mm Cable1.4177.1320.20
185mm Cable1.6232.4623.00
240mm Cable1.7289.3025.60

Based on the data in the chart, people can select the right size for their application. If there are still questions about the dimensions, one can also consult ZW Cable and we will provide you with the right cable solution. Follow along as I examine whether or not low voltage cables need conduit when installed.

Does low voltage cable need to be in conduit?

The conduit play a important role in installing the low voltage cables, the purpose of conduit is to provide the cable with physical protection from the elements such as animal bites, mechanical damage and moisture. The conduit fill for low voltage cables is determined by many factors, in some cases, low voltage cables need to be installed conduit to protect the cable.

1. Environment:Conduits for low-voltage cables must be installed if low-voltage cable wiring is to be done in challenging conditions or busy locations to guarantee the cable’s smooth operation.

2. Fire protection:Certain conduits constructed of unique materials have the ability to prevent fires, which can safeguard the cables and add to security in the event of a fire.

3. Distance:When wiring low voltage cables over long distances, conduits are required to avoid damage to the cables over long distances.

4. Maintenance:Installation of low-voltage cables using conduit is conducive to keeping the cables in order. When carrying out cable maintenance, it is convenient for people to identify and distinguish between cables and replace them in a targeted manner.

In addition, it is also necessary to comply with local regulations, some areas take into account the safety issues, will require must cable must be installed conduit. Also the low voltage cable manufacturers will tell you about suitable cable solutions and you can refer to the advice they provide. Finally, let’s analyse whether low-voltage and high-voltage cables can be run together.

Can low voltage and high voltage cables run together?

We do not advocate running low-voltage cables and high-voltage cables together for safety, signaling, and anti-interference reasons. Here are the specific analyses.

Firstly, high-voltage cables carry far more power than low-voltage cables; therefore, if they are run together, in the event of a fault, the high-voltage cables will be accompanied by low-voltage cables posing an even greater danger to workers.

Secondly, the electromagnetic field and noise produced by the high-voltage cable will interfere with the low-voltage cable, disrupting the signal and electricity transmission and steady operation of lv cables.

Thirdly, low-voltage cables have a rated voltage of 0.6/1kv, while high-voltage cables have a voltage rating of 35kv/110kv. The voltage difference is too great to run them together.

Finally, in the event of a short circuit or other malfunction, high-voltage cables are more likely to catch fire. This can harm low-voltage cables, paralyze the nearby circuits, and pose other problems.

Consequently, low-voltage cables and high-voltage cables cannot run together. During the low voltage cable installation, it is important to maintain a safe distance or take precautions such as isolating and shielding to ensure safety and non-interference.

Conclusion

In short, the study will provide an understanding of low voltage cable types, sizes, and wiring requirements. When choosing low voltage wire, people will be able to choose different types of LV cables in conjunction with one’s needs and low voltage cables specifications to match a cost-effective cable solution to your application.

ZW Cable also have low voltage cables in stock for sale at great prices. Also, you can customize extra low voltage cable for specific applications and we will give you a satisfactory buying experience.

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About Me
Richard Zi
Richard Zi

My name is Richard Zi, and serve as the General Manager of ZW Cable. With a deep and extensive background of more than 15 years in the cable industry, I am excited to share my wealth of knowledge and experience.ZW Cable is a renowned company in the field of cable manufacturing in world, we specialize in selecting the best cable sizes and effectively solving all your cable challenges. If you have any questions or needs regarding cable solutions, please contact me and I assure you of the highest standards of personalized and effective guidance and support.View All My Posts >>

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