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Overhead cables are primarily used for the transmission and distribution of electricity across long distances, facilitating power supply to homes and businesses. They can also support telecommunications lines, enabling data and voice communication. Additionally, overhead cables are often employed in transportation systems, such as tram and light rail networks, to provide power to vehicles. Their installation is generally more cost-effective than underground alternatives, especially in rural or challenging terrains.
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Why not touch overhead cables with branches?
Touching overhead cables with branches can be extremely dangerous because these cables often carry high voltage electricity. If a branch comes into contact with the wires, it can create a path for electrical current to travel, potentially causing electrocution or fires. Additionally, the added weight of branches can cause the cables to sag, increasing the risk of accidents. It's important to maintain a safe distance from overhead power lines to prevent these hazards.
What are the disadvantages of overhead cables?
Overhead cables can be vulnerable to environmental factors such as storms, high winds, and ice, which may cause outages or damage. They also pose safety risks, as they can be more easily accessed by animals and people, leading to potential electrocution or accidents. Additionally, aesthetic concerns arise, as overhead lines can clutter landscapes and reduce property values. Finally, maintenance and repair can be more challenging and costly compared to underground systems.
Overhead cables with plenty of slack in them?
Overhead cables with plenty of slack are typically designed to accommodate thermal expansion, wind movement, and other environmental factors that can cause tension changes. The slack allows for flexibility, reducing the risk of damage or breakage during inclement weather or mechanical stress. Additionally, having extra slack can facilitate maintenance and repairs, as it provides some maneuverability without the need for immediate replacement or adjustment.
What is combined overhead variance?
Combined overhead variance = fixed overhead variance + variable overhead varianceFixed Overhead :which remains fixed and donot change upto certain level of productionVariable Overhead: which keep changing with the change in production units.
How do you determine the overhead rate when applying overhead costs?
Using direct labor hours: Overhead rate = Total Overhead Expenses /Direct labor hours Using Machine hours: Overhead rate = Total Overhead Expenses /Machine hours
What are overhead cables made of?
they are made of alluminium
Why are wires hung loosely in summer?
beacuse is good
Advantages and disadvantages of underground and overhead cables?
Overhead transmission lines are less expensive, in most cases, significantly less expensive, than underground cables. Underground transmission cables require insulation, cooling systems, and -the most expensive feature- excavation!
What is the definition of suspension bridge?
A bridge with overhead cables to support it.
What is underground power transmission?
power cables under ground rather then overhead.
Why not touch overhead cables with branches?
Touching overhead cables with branches can be extremely dangerous because these cables often carry high voltage electricity. If a branch comes into contact with the wires, it can create a path for electrical current to travel, potentially causing electrocution or fires. Additionally, the added weight of branches can cause the cables to sag, increasing the risk of accidents. It's important to maintain a safe distance from overhead power lines to prevent these hazards.
Why are overhead electricity cables never tightly over a pylon?
Overhead electricity cables are not tightly strung over a pylon to account for factors like temperature changes, wind-induced movements, and maintenance needs. Having some slack in the cables helps to reduce stress on the wires and prevent damage or breakage.
Difference between overhead cables and under ground cables?
Overhead cables are installed above the ground on poles or towers and are generally easier to access for maintenance but more exposed to weather conditions, while underground cables are buried beneath the ground, offering better protection from environmental factors but requiring more complex and costly installation and repair processes. Vazpo sells a wide range of cables including overhead and underground cables.(www. vazpocable. com)
What are the applications of AB CABLE?
What are the applications of AB CABLE? Ans- Aerial Bunched Cable(ABC) are the cables used for overhead electrical power distribution in power lines. AB cables are used in an electrical transmission system or telecommunications line.There are so many AB CABLE manufacturers in India working in this space. There are different uses of AB CABLE. Some of them are as follows- AB CABLE is easy for installation. They are cost effective and economic. These cables are ideal for overhead connections since they can withstand high voltages. it can be installed with a narrow space. It also helps to reduce the chances of short circuit & mishappening.
Why overhead lines are far cheaper than underground cables for long distances and less economical for short distances?
First of all, the overhead lines are cheaper because they are bare, while underground cables are armoured and insulated, hence explaining the higher price. Overhead cables come of course with accessories like poles and insulators (mostly porcelain). For shorter distance, underground cables are preferred as the cost of pole erection does not exist.It's also worth pointing out that the cost of excavating a trench is more expensive than erecting an overhead line, and this cost escalates dramatically with higher voltage systems. For example, a 132-kV double-circuit underground line is between 5 and 8 times the cost of an overhead tower line, whereas an 11-kV single-circuit underground line is up to twice the cost of a wooden-pole overhead line.
What is aluminiums uses?
Aluminium is a light, but strong metal. This makes it very useful, for example it can be used for making aircraft bodies because of these properties.Aluminium is also used to surround overhead cables because it's light & it's a good conductor of electricity.
Fast wide SCSI uses cables that have pins?
yes
