Trystan Casey
Electric poles are dangerous and can cause severe injuries or even death. Power lines strung between utility poles typically carry 4 to 25 kilovolts of electricity, which can cause severe damage to the body, including amputation of limbs and cardiac arrest. Even without touching the wires, one can receive an electric shock from nearby surfaces during rainstorms or with bare feet. Additionally, wooden utility poles are often treated with toxic pesticides like pentachlorophenol to protect them from fungi and termites, which can contaminate the surrounding environment and cause health issues such as cancer, reproductive problems, and nervous system damage. Therefore, it is crucial to maintain a safe distance from electric poles and be cautious of potential hazards to ensure the safety of oneself and others.
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What You'll Learn
- Electric poles can carry high-voltage wires of up to 500 kilovolts
- Even lower-voltage wires of 4 to 25 kilovolts can cause severe injuries
- Stray voltage can occur when old wires underground degrade, sending currents through the soil
- Tree branches that touch power lines can energize the tree and the ground, creating a hazard
- Utility poles can be made of materials such as wood, concrete, steel, or fiberglass
Electric poles can carry high-voltage wires of up to 500 kilovolts
Electric poles are a common sight, but they can be extremely dangerous. They carry power lines that supply electricity to homes and businesses, and these lines can carry high voltages.
Electric poles can carry two types of power lines: distribution lines and sub-transmission lines. Distribution lines, also known as "feeders", carry power from local substations to customers, typically over relatively short distances of up to 30 miles. The voltage of these lines is usually between 4.6 and 33 kilovolts, but can be as high as 34.5 kilovolts. Sub-transmission lines, on the other hand, carry higher voltage power between regional substations and local substations. These lines usually carry voltages of 46, 69, or 115 kilovolts, but can go up to 500 kilovolts.
Transmission wires are the high-voltage wires that carry electricity between 69 to 500 kilovolts to substations where the voltage is reduced and then distributed. Even at the lower end of this range, an electric shock can cause severe injuries, and in some cases, amputation or cardiac arrest. Therefore, it is important to keep your distance from electric poles and never approach a downed power line.
In addition to the dangers of electric shock, utility poles are also susceptible to natural forces and may lean or fall over. When this happens, the wires and transformers can cause property damage and serious personal injury. It is also dangerous to post items on utility poles, as this can be life-threatening to both the professionals who work on the lines and those posting the items.
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Even lower-voltage wires of 4 to 25 kilovolts can cause severe injuries
Playing near electric poles is extremely dangerous and can be life-threatening. Even lower-voltage wires of 4 to 25 kilovolts can cause severe injuries and, in some cases, even death.
Electricity is generated by the flow of electrons through a conductive material, with the potential gradient from high to low concentration determining the voltage. While household electricity in the United States is typically around 110-120 volts, power lines strung between utility poles can range from 4 to 25 kilovolts. This voltage is still considered high and can result in severe and life-threatening injuries.
The human body is an excellent conductor of electricity, and when an electrical current passes through the body, it can cause extensive damage. The severity of the injury depends on several factors, including the magnitude of energy delivered, resistance encountered, type of current, current pathway, and duration of contact. In some cases, the electricity can exit the body through a wound, causing such severe damage that amputation of a hand or foot may be necessary. Additionally, the electric shock can stop the heart, leading to death.
It is important to understand that direct contact with the power lines is not necessary for an electric shock to occur. Electricity can "jump" across an air gap, and even tree branches that come into contact with power lines can energize the surrounding area, creating a hazardous situation. Therefore, it is crucial to maintain a safe distance from electric poles and power lines at all times.
Furthermore, it is worth noting that electrical injuries can have long-term impacts on physical health and employment prospects. Studies have shown that adults who have sustained electrical injuries are more likely to experience neuropathy and may require amputation. Additionally, they are 50% less likely to be employed two years after the injury compared to those who have suffered fire-related injuries.
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Stray voltage can occur when old wires underground degrade, sending currents through the soil
It is important to heed the advice to not play near electric poles. Electric poles support power lines that carry electricity at dangerous voltages that can cause severe injuries. Even without touching a power line, one could still receive a shock if, for instance, a tree branch that has come into contact with the power line has energized the ground around it.
Stray voltage is a phenomenon that occurs when old wires underground degrade, sending currents through the soil. This happens when the insulation surrounding underground wires fails, exposing the wires to the soil. This electrical leakage can be caused by various factors, including physical damage, thermal stress, and chemical stress to the insulation on power lines. For instance, insulation can become swollen or cracked due to overheating, or it can be abraded by digging or corroded by exposure to salt or oil.
When insulation fails, electricity can leak and flow through the soil, creating stray currents. These stray currents can then enter metal objects on the surface, such as utility poles, streetlights, fire hydrants, and manhole covers. This situation poses a significant hazard to anyone in the vicinity.
Stray voltage has become a particular concern in metropolitan areas with aging underground and aboveground electrical distribution equipment in crowded public spaces. Even a low rate of insulation failures or current leakage can result in dangerous exposure to the public. For example, in New York City, there have been frequent incidents of stray voltage, including the tragic electrocution of a woman walking her dog in 2004.
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Tree branches that touch power lines can energize the tree and the ground, creating a hazard
It is extremely dangerous to play near electric poles. Electric poles, also known as utility poles, are tall structures that carry power lines. These power lines transmit high-voltage electricity, ranging from 69 to 500 kilovolts, which is then reduced at substations to 4 to 25 kilovolts before being distributed to homes and businesses.
Tree branches that touch these power lines can create a very hazardous situation. Trees contain water, which is an excellent conductor of electricity. When a tree branch comes into contact with a power line, it can energize the tree and the ground around it, turning it into a dangerous electrical conductor. This means that anyone or anything that touches the tree or the ground nearby is at risk of receiving an electric shock.
The electricity can arc from the power line to the tree, and this can be caused by a voltage surge on the power line, such as a lightning strike. This arcing can cause fires and can be fatal to anyone in or near the tree. Even without direct contact, if a person or object is close enough, the electricity can still arc and cause serious harm.
Additionally, attempting to trim or prune trees near power lines can be extremely dangerous. It is crucial to be aware of any power lines before starting any tree work and to never climb a tree to prune it. Homeowners have been seriously injured, and even killed, when their pruning tools or ladders have accidentally come into contact with energized wires. In some cases, the electric shock has been so severe that it has resulted in the amputation of a hand or foot, or cardiac arrest requiring immediate medical attention.
To ensure safety, it is recommended to maintain a safe distance from electric poles and to leave any tree trimming or pruning near power lines to professional tree service companies. These professionals have the necessary training and equipment to safely perform these tasks.
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Utility poles can be made of materials such as wood, concrete, steel, or fiberglass
Utility poles are columns or posts that support overhead power lines and other utilities, such as electrical cables, fibre optic cables, and street lights. They are typically between 20 and 100 feet tall and are usually made of wood, concrete, steel, or fiberglass.
Wooden poles are traditionally used for utility poles due to wood being abundant, lightweight, strong, and durable when treated with preservatives. However, changes in legislation affecting wood preservatives have reduced the lifespan of treated wood, especially in tropical climates. This has led to the exploration of alternative materials, such as concrete, steel, and fiberglass.
Concrete utility poles are known for their high resistance to fire and pests, making them ideal in areas prone to wildfires or inclement weather. They also have a longer lifespan than wooden poles, but they are heavier and more difficult to transport and work with. Steel utility poles are advantageous for high-voltage lines, as they can be taller and provide enhanced clearances. Steel poles are also durable and long-lasting, but they are susceptible to ground line corrosion.
Fiberglass, or fiber-reinforced composite (FRC), utility poles are lightweight, weather-resistant, and hollow. They offer similar advantages to tubular steel poles but require different attachment hardware. FRC poles are pre-drilled by the manufacturer or can be drilled on-site, and they use through-bolts instead of lag bolts for maximum bonding and to avoid hardware loosening.
While the choice of utility pole material depends on various factors, such as cost, environmental impact, and performance, it is important to remember that playing near electric poles can be dangerous. It is suggested that people should not play near electric poles to avoid potential hazards and accidents. Electricity is extremely dangerous, and even touching a power line can cause severe injuries.
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Frequently asked questions
Electric poles are dangerous due to the potential for downed power lines, leaning poles, ground voltage, and chemicals used in their treatment. Touching a power line can cause severe injuries and even death.
Stray voltage occurs when the insulation surrounding old wires underground degrades, exposing the wires to the soil. These stray electrical currents can travel through the soil and into metal objects on the surface, creating a hazard.
Never approach a downed power line. If it has fallen into water, stay away from the water and anything in contact with it. Move at least 10 feet away and use extreme caution.
A common preservative used on wooden utility poles is creosote, which can pose health problems for both humans and animals.
Educate yourself and your children about the dangers of power lines. When enjoying the outdoors, be mindful of power lines when flying kites, climbing trees, or using ladders. Keep a safe distance from electric poles and stay away from windows and doors during thunderstorms.
