Low Smoke Zero Halogen Cable - LSZH or LSOH ...
Jun. 10, 2024
Low Smoke Zero Halogen Cable - LSZH or LSOH ...
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Gary Crilly, RCDD/OSPCommon Fuse Box Problems What is a fuse box? A fuse box is a type of electrical cabinet in which fuses, and circuit breakers are used to protect the wiring system from overloads, short circuits and ground faults. Fuse boxes help to distribute electricity more efficiently, with safety as a primary concern. Before we dive into the most common fuse problems, lets have a look at how a fuse box works. How does a Fuse box work? A fuse is designed to "blow" (or melt and separate the fusible link) under too high of an electrical current. A circuit breaker, on the other hand, interrupts electrical service through the use of tripped switches. These two main types of protection are then complemented by various other forms of devices, such as ground fault protection, arc fault protection and surge protectors. Fuses are typically divided into two types: cartridge fuses and link or cable fuses. The cartridge fuse is a small tube that holds the fusible metal link in place. After the circuit has become overloaded or shorted, the link melts and the circuit is broken. The tube then cools down again to reform the link, allowing normal operation to resume. The Most Common Fuse Box Problems The average person can notice signs of a failing fuse box. You don&#;t need to be a qualified electrician to understand you may have a problem on your hands. The two most common symptoms are: An overloaded circuit which will blow the fuses in question. As a result, this will cause any associated devices to disconnect. Lastly, the smell of burning is another clear indication of a faulty fuse, as well as the smell you will notice burn marks on the fuse box. If you notice either of these signs within your premises, it&#;s a clear sign of a problematic fuse box. To resolve these issues, you must contact a qualified electrician. What causes the most common fuse box problems? Faulty Appliances: A faulty fuse box can be the result of a single appliance. For example, a hairdryer, kettle, laptop, or any other appliances in use. Regardless of the appliance, any electrical fault present can lead to your fuse box tripping repeatedly. The way to identify the issue is by disconnecting all appliances and then plugging them back in one at a time until the circuit trips. Poor Wiring: Fuse boxes generally undergo a lot of maintenance work during their lifespan. This continuous maintenance can lead to the installation of poor wiring or installation of the wrong size wire. Both of these examples pose major risks such as, electric shock or electrical fire. All wiring issues must be investigated and dealt with by a professional electrician. In addition, if poor wiring is the reason for your faulty fuse box, it must be dealt with as top priority. Overloaded Circuits: Present day buildings are generally full of electrical devices, and this can lead to significant strain on your fuse box. In addition, this highly noticeable when extension leads are in use. www.nmcabling.co.uk
What Is LSZH Fiber Optic Cable?
What Is LSZH Fiber Optic Cable?
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When choosing fiber optic jumper cables, other than selecting the right connector type on both ends of the cable, such as SC to LC fiber cable, ST ST fiber patch cable, SC/APC to LC patch cable, SC to ST fiber cable, LC to ST fiber patch cable, or SC to SC patch cord, you also need to pay much attention to the construction of fiber optic cables. Nowadays, with increasing amount of cables found in residential, commercial and industrial applications, there is a greater fuel load in the event of a fire. Wire and cable manufacturers responded by developing materials that had a high resistance to fire while maintaining performance. Low-smoke, zero-halogen (LSZH) cables proved to be a key materials group that delivered enhanced fire protection performance. How much do you know about LSZH cables? This post aims at helping you learn more about LSZH fiber optic cables.
Introduction
LSZH stands for low-smoke zero-halogen, and describes a cable jacket material that is non-halogenated and flame retardant. This type of jacket material has excellent fire safety characteristics of low smoke, low toxicity and low corrosion. When LSZH fiber optic cables (as shown below) come in contact with a flame, very little smoke is produced, making them ideal for applications where a lot of people are confined in a certain place, such as office buildings, train stations, airports, etc. A fire may be very harmful in a building, and at the same time, the smoke can cause even more damage to people who are trying to locate exits and inhalation of smoke or gases. LSZH fiber optic cables are free of halogenated materials like Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I) or Astatine (At), and those materials are reported to be capable of being transformed into toxic and corrosive matter during combustion. Low-smoke property of LSZH fiber optic cables makes them safe and helpful. More people in fires die from smoke inhalation. LSZH fiber optic cables release low smoke and zero halogenated materials in these places would be really important to the safty of people.
Applications of LSZH Fiber Optic Cables
There is no doubt that the amount of fiber optic cables installed in buildings has been increasing as data communication proliferates. LSZH fiber optic cables have been common in central office telecommunication facilities, due to the large relative fuel load represented by wire and cable. Several applications of LSZH fiber optic cables are:
- Public spaces like train stations, hospitals, schools, high buidings and commercial centers where the pretection of people and equipment from toxic and corrosive gases is critical.
- Data centers contain large amounts of cables, and are usually enclosed spaces with cooling systems that can potentially disperse combustion byproducts through a large area. Other materials burning may also contribute greater amounts of dangerous gases which will outweigh the effect of the cables. There have been notable fires where cables burning contributed to corrosion, but in some instances, better fire response techniques could have prevented this damage.
- Nuclear industry is another area where LSZH fiber optic cables have been and will be used in the future. Major cable manufacturers have been producing LSZH fiber optic cables for nuclear facilities since the early s. The expected construction of new nuclear plants in the U.S. in coming years will almost certainly involve LSZH fiber optic cables.
Tips for Choosing LSZH Fiber Optic Cables
No two products are the same and many factors will define the suitability of the final product to its application. Research shows that 27 LSZH compounds have huge variation in physical properties. Even using material which meets the base requirements of one of the many specifications available may not result in the best material for the application. When choosing LSZH fiber optic cables, factors such as the environment and price should be considered. An environmental factor such as the temperature of the installation could reduce the flexibility of the cable. Will the application be in an open area or confined? Will other flammable material be present? Many factors need to be taken into consideration. LSZH fiber optic cables also tend to be higher in cost.
Conclusion
When selecting or designing a fiber optic cable or fiber optic jumper cable for any application, the operating enviroments where the fiber optic cable will be used, whether extreme or not, must be considered along with availability, performance, and price. And when the safety of humans and the enviroment is a consideration, along with high-performance and capability, LSZH fiber optic cables provide a good solution for you.
If you want to learn more, please visit our website Low Hazard Levels lszh compound.
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