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Electrical injury [1]
|Lightning injury caused by a nearby lightning strike. The slight branching redness (sometimes called a Lichtenberg figure) travelling up the leg was caused by the effects of current.|
Electrical injury is a physiological reaction caused by electric current passing through the body.[2] The injury depends on the density of the current, tissue resistance and duration of contact.[3] Very small currents may be imperceptible or produce a light tingling sensation. A shock caused by low and otherwise harmless current could startle an individual and cause injury due to jerking away or falling
Consequences of injury from electricity may include amputations, bone fractures and orthopedic and musculoskeletal injuries.[5] If death results from an electric shock the cause of death is generally referred to as electrocution.. Electric injury occurs upon contact of a body part with electricity that causes a sufficient current to pass through the person’s tissue
Low Voltage Electric Shock: Should You Be Concerned? [2]
A low voltage electric shock is dangerous because it can cause electrocution and fatal injuries even though there are no visible signs of external injury. It transmits through tissues with low resistance such as the brain, heart, internal organs, blood vessels and the central nervous system.
Additionally, electrical shock can cause cardiac arrest, injuries to the heart, potentially fatal arrhythmia, paralysis or seizures.. A low voltage electric shock occurs when a person comes into contact with a source of low voltage electricity which directly or indirectly sends an electrical current passing through the person’s body, potentially causing both internal and external injuries.
The voltage in a typical household environment is approximately 110 to 220 volts.. People can be electrocuted by coming into contact with 100-200 volts and there have been reports of injuries or death resulting from being shocked with as little as 42 volts.
Electric Shock – Current [3]
An electric shock can kill or seriously injure and is one of the hazards that electrical safety legislation is intended to protect against.. “A dangerous physiological effect resulting from the passing of an electrical current through a human body or livestock.”
This is a function of the magnitude of the current and the length of time the current flows. A current exceeding 30mA is likely to be fatal unless it is interrupted in a very short time.
Voltage does not give a good indication of the likely severity of an electric shock as current flow depends on the resistance of the human body. The majority of the body’s resistance comes from the skin and this can range from 1,000 Ω when wet to 100,000 Ω when dry.
What Levels of Voltage are Lethal? [4]
This is a very common question, but the answer is not as clear as many people would hope. The amount of voltage it will take to kill a person will vary greatly based on many different factors
In addition, it will take a lower number of volts to kill someone if it is a constant flow that is entering the body than if it were just one quick shock. Of course, it will also depend on the health of the person being shocked
Another thing that could impact the survive-ability of a shock at various voltages is whether it is from direct current or alternating current. Experiments have shown, for example, that AC electricity was as dangerous as DC, meaning all other things being equal, it would take about twice as many volts to kill someone with direct current as it would alternating
How Much Current Can The Human Body Withstand? [5]
It is not the Voltage that can kill humans, it is the current that kills. A current of 0.1 ampere for a mere 2 seconds can be fatal
The internal resistance between the ears is only 100 ohms, while it is around 500 ohms when measured from finger to toe.. Electric shocks are often depicted in physical comedies, and the plot proceeds as usual: the comic protagonist accidentally gets to a wire without knowing the high current that flows through it
The question of why this fatal accident is perceived as humorous is disturbing… interesting, but disturbing. However, this discourse is irrelevant at the moment
Fatal electric shock: what voltage causes death? – [6]
Voltage alone is not the only contributing factor to the severity of an electric shock. Current, normally measured in amps, is also a critical part of the equation, along with other minor factors.
It’s the flow of current passing through the body that clamps the heart or causes it to fibrillate, potentially resulting in death.. So the question really should be: How much current does it take to kill someone?
0.1 amps (100mA) passing through the body will almost certainly be fatal.. However, the current involved in an electric shock is determined by the voltage and the resistance of the circuit
Do Amps or Volts Kill You? [7]
This resource explains electricity basics – volts, amps, currents, resistance, and why it is dangerous to touch electrical outlets with wet hands.. There’s an old saying: “It’s not the volts that kills you, it’s the amps.” That’s true in a way
An electric current is the flow of negatively charged electrons past a given place over a period of time.. The amount of energy in each unit of electrical charge is called voltage
So the amps measure the amount of electricity in a current. Did you know that your body uses electricity, too? Your muscles, lungs, and heart all need electricity so they can work properly
Which One Kills – Current or Voltage and Why? Amps vs Volts [8]
Which One Kills – Current or Voltage and Why? Amps vs Volts. Which One is the Fatal, Voltage or Current and Why?
That’s why no one should play with electricity (power, voltage and current) as it is our friend but the worst enemy as well. If we give it a chance, it will never miss at any cost.
If I kill you with a knife (don’t worry, I won’t but not guaranteed), will you blame the knife or me? Another way, Which is the killer, bullet or gunpowder?. Related to the topic, Which is the killer, Current or Voltage?
Ohm’s Law (again!) [9]
A common phrase heard in reference to electrical safety goes something like this: “It’s not the voltage that kills, it’s current!” While there is an element of truth to this, there’s more to understand about shock hazard than this simple adage. If the voltage presented no danger, no one would ever print and display signs saying: DANGER—HIGH VOLTAGE!
It is electric current that burns tissue, freezes muscles, and fibrillates hearts. However, electric current doesn’t just occur on its own: there must be voltage available to motivate the current to flow through a victim
Taking Ohm’s Law for voltage, current, and resistance, and expressing it in terms of current for a given voltage and resistance, we have this equation:. The amount of current through a body is equal to the amount of voltage applied between two points on that body, divided by the electrical resistance offered by the body between those two points
Electric Shock First Aid [10]
Electricity is a mainstay in the modern home, with more product, gizmos, and gadgets plugging into our walls than ever before. But not all houses were built the same and for some Australian families the reality of dodgy wiring, faulty outlets, and outdated or obsolete safety switches can result in an increased risk to their safety.
Electricity is potentially the most common threat found in Australian homes – that doesn’t crawl, fly, or slither that is!. (Which you can read more about here – FirstAidPro Articles)
Understanding exactly what electricity does to the human body and how you can help someone who has suffered an electrical shock can make all the difference when it happens to you.. Become a First Aid Pro, Save Lives! – Electric Shock First Aid Course
How much voltage/current is “dangerous”? [11]
While 12 V is almost always safe, worst-case situations can and have led to death.. Mechanism may be ventricular fibrillation BUT paralysis of the respiratory muscles occurs at about 20% of the current needed to introduce fibrillation.
12 VDC applied across the chest has killed volunteers despite medical experts standing by !!!. (From memory – volunteer prisoners participating in medical research).
Once conduction into the body starts, you get a very low impedance/resistance circuit into what is essentially a large bag of dilute saline solution.. I have received a substantial amount of “pushback” in the 11+ years since I posted this answer.
Electric Shock: What Is Is, How It Feels, and Why Dangerous? [12]
An electric shock can be a mildly unpleasant sensation or a life-threatening emergency depending on the strength of the electrical current and the duration of contact. Knowing how to prevent electric shocks is one of the primary components of electrical safety.
Here’s what you need to know about electric shock, including what electrical injuries look like and whether or not an electric shock can kill you.. An electric shock refers to the experience of an electric current traveling through the body
In fact, the human body generates around 100 watts of power at rest and uses electricity to send signals to internal organs, such as the heart.. An electric shock occurs when an external source of electricity, such as a faulty power line or a lightning strike, comes into contact with a part of the body
Can Voltage Kill You? [13]
Can voltage kill you? This is one of those questions that homeowners are always asking, especially if they have a lot of appliances lying around. The answer is somewhat difficult to comprehend for the uninitiated because it isn’t a simple matter of saying ‘Yes’ or ‘No’.
And once you know what they mean, you will understand the role voltage plays and whether or not it can kill.. But what does any of that even mean? The New York Committee for Occupational Safety and Health elaborates on that statement by first explaining the relationship between voltage, current, and resistance:
You could also describe it as the rate of the flow of electricity. – Resistance – is simply the opposition to the flow of electricity
Electrical Shock Hazards, Risks, and other Dangers [14]
The real danger from electricity is an electrical shock therefore dangerous electrical conditions are called shock hazards. For a human an electrical shock comes from the body’s reaction to electrical amperage flowing through the body, not how great the level of electrical voltage that exists.
When the human body comes in contact with electrical voltage the body actually becomes a parallel current carrying as path with the grounding conductor of the electrical device to ground. Electrical current will flow on the grounding conductor as well through the human body
This electrical current flowing through the human body will create some type of shock to the human.. To better understand how the amount of amperage that will effect the human body and how the body reacts to these amperage levels, we must first review the examples of body resistance of human contact points under different conditions
Dive into anything [15]
If I wanted to creat a lethal electroshock weapon, how much voltage should it have to certainly kill an average sized person somewhat instantly? (In Volts, Watts, Amperes, whatever). Watts (voltage) measures how much water the river carries, and Amps (current) measure how fast the water is flowing.
Conversely, a non-lethal weapon like a stun gun can deliver 50,000 volts or more, but there are hardly any Amps pushing the voltage so it just hurts like hell instead of killing.. For the purpose of your story, the power source of the weapon should determine whether you use high or low voltage, but either way you’re going to need a lot of Amps driving it.
All replies must be a genuine effort to answer the question helpfully; joke answers are not allowed. If you see any comments that violate this rule, please hit report.
ELECTRICAL SAFETY – Applied Industrial Electricity [16]
With this lesson, I hope to avoid a common mistake found in electronics textbooks of either ignoring or not covering with sufficient detail the subject of electrical safety. I assume that whoever reads this book has at least a passing interest in actually working with electricity, and as such the topic of safety is of paramount importance.
The more relevant a technical topic can be made, the more likely a student will be to pay attention and comprehend. And what could be more relevant than application to your own personal safety? Also, with electrical power being such an everyday presence in modern life, almost anyone can relate to the illustrations given in such a lesson
Most of us have experienced some form of electric “shock,” where electricity causes our body to experience pain or trauma. If we are fortunate, the extent of that experience is limited to tingles or jolts of pain from static electricity buildup discharging through our bodies
Electric Shock – Current [17]
An electric shock can kill or seriously injure and is one of the hazards that electrical safety legislation is intended to protect against.. “A dangerous physiological effect resulting from the passing of an electrical current through a human body or livestock.”
This is a function of the magnitude of the current and the length of time the current flows. A current exceeding 30mA is likely to be fatal unless it is interrupted in a very short time.
Voltage does not give a good indication of the likely severity of an electric shock as current flow depends on the resistance of the human body. The majority of the body’s resistance comes from the skin and this can range from 1,000 Ω when wet to 100,000 Ω when dry.
Sources
- https://en.wikipedia.org/wiki/Electrical_injury#:~:text=Assuming%20a%20steady%20current%20flow,exceptional%20cases%20have%20been%20noted.
- https://electrocuted.com/blog/low-voltage-electric-shock/#:~:text=Yes%20it%20is%20still%20dangerous,as%20little%20as%2042%20volts.
- https://www.pat-testing-training.net/articles/electric-shock.php#:~:text=Exposure%20to%20voltages%20less%20than,450V%20a.c.%20are%20especially%20dangerous.
- https://www.creativesafetysupply.com/qa/electrical-safety/what-levels-of-voltage-are-lethal
- https://www.scienceabc.com/humans/how-many-volts-amps-kill-you-human.html
- https://www.metroid.net.au/engineering/knowledge_center/fatal-electric-shock-what-voltage-causes-death/
- https://letstalkscience.ca/educational-resources/stem-in-context/do-amps-or-volts-kill-you
- https://www.electricaltechnology.org/2020/02/killer-current-voltage.html
- https://www.allaboutcircuits.com/textbook/direct-current/chpt-3/ohms-law-again/
- https://www.firstaidpro.com.au/electric-shock-first-aid-survive-240-volts/
- https://electronics.stackexchange.com/questions/19103/how-much-voltage-current-is-dangerous
- https://justenergy.com/blog/electric-shock-what-how-and-why-dangerous/
- https://portablepowerguides.com/can-voltage-kill-you/
- https://www.spgsamerica.com/information/electrical-shock-hazards
- https://www.reddit.com/r/answers/comments/bjvawl/how_much_voltage_to_kill_a_human_being/
- https://iastate.pressbooks.pub/electriccircuits/chapter/chapter-1/
- https://www.pat-testing-training.net/articles/electric-shock.php
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