0
What else can I help you with?
Distancebetween overhead power lines and houses?
20 feet.
What is the purpose of ground wires in overhead transmission lines?
connection of the ground of all the transmission lines and used as a communication cable between protection devices
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.
Three electrical hazards that may be present at a construction site are?
This may come from wet conditions, overhead power lines, and overloaded circuits but there are three main types of electrical hazards: Shock, Arc Flash and Blast and most electrical accidents result from one of the following three factors: unsafe equipment or installation, unsafe environment, or unsafe work practices.
How far should a scissor-lift be kept from power lines?
As far as possible! Here are the OSHA requirements. If the voltage is unknown stay 18 feet away. 13,000 - 69,000 volts10 feet115,000 - 138,000 volts11 feet230,000 volts13 feet500,000 volts18 feet This is no joke, the current will arc to equipment too close to the lines, and may make it near impossible to rescue the equipment operator. It's like being struck by lightning.
What has the author Vladimir List written?
Vladimir List has written: 'Mechanical design of overhead transmission lines'
Is a step employers should take to protect workers near overhead power lines?
Employers should ensure that workers are trained to recognize the hazards associated with overhead power lines and implement safety protocols, such as maintaining a safe distance from these lines. Additionally, they should use barriers or warning signs to mark hazardous areas and provide appropriate personal protective equipment. Regular safety audits and clear communication about power line locations can further enhance worker safety.
What should you lookout for when launching a sailboat with raised mast?
Overhead obstacles - such as power-lines or bridges.
Where does electricity go after it goes to the wooden overhead lines?
Overhead distribution lines are made of aluminium not wood.
What should you look out for when launching a sailboat wih a raised mast?
You should look for anything overhead- bridges or lines of any kind.
What determines the minimum distance that any part plant and machinery has to be kept from overhead electricity lines and explain why a distance should be kept?
The minimum distance that plant and machinery must be kept from overhead electricity lines is determined by safety regulations, which typically take into account the voltage of the lines and the type of equipment being used. This distance is crucial to prevent accidental contact that could lead to electrical shock, electrocution, or equipment damage. Maintaining a safe distance also helps to minimize the risk of arcing, which can occur when machinery gets too close to high-voltage lines, thus ensuring both worker safety and operational integrity.
What safety precautions should be taken when working near or touching power lines?
When working near or touching power lines, it is important to maintain a safe distance of at least 10 feet and assume all power lines are energized. Avoid contact with any part of the power line or equipment, and use insulated tools if necessary. Always be aware of overhead power lines and follow proper safety protocols to prevent electrical hazards.
Distancebetween overhead power lines and houses?
20 feet.
What are the materials added in electrical overhead lines?
Overhead electrical lines are usually made of aluminum, and some have a steel strand added which is used to give the conductor more strength (not to carry current).
How does the electrical energy coming from the power plant reachest the customer?
The electrical energy generated at the generating station reaches the consumer through the transmission and distribution systems. The transmission system generally consists of overhead transmission lines, towers, safety equipment and transformers and is used to transmit the generated electricity to the load centres (i.e. places where electrical energy is consumed). This energy is then distributed to various consumers using the distribution system - which consists of underground cables, overhead lines, transformers, safety equipment etc etc...
Why velocity of wave propagation is same for all overhead lines?
The velocity of wave propagation in overhead power lines is primarily determined by the line's electrical characteristics, specifically its capacitance and inductance, which are relatively consistent across different lines. This velocity is a function of the square root of the ratio of inductance to capacitance (v = 1/√(LC)). Because these properties are influenced by the physical design and materials used in overhead lines, the propagation speed tends to be similar across various lines, regardless of their specific configurations or lengths. Thus, for practical purposes, it can be considered constant for overhead transmission lines.
What are contour lines used for?
Contour lines enable us to see changes in elevation using an overhead map
