230V AC vs 230V DC: Which Is More Dangerous?

  • Thread starter namannitant
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    Ac Dc
In summary: AC current is more dangerous for the human body because it can cause respiratory paralysis and ventricular fibrillation at lower currents compared to DC current. This is due to the fact that AC current can easily pass through the body's natural resistance, causing more damage to the heart and other vital organs.In summary, AC current is more dangerous for the human body than DC current due to its ability to easily pass through the body's natural resistance, causing damage to vital organs at lower currents. This was a topic of debate between Edison and Tesla at the turn of the century, with demonstrations of electric shock on animals being used to showcase the lethality of AC current.
  • #1
namannitant
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Which is most dangerous for human being 230 V ac or 230 V dc voltae supply
 
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  • #2
Depends on the current passing through your body.
 
  • #3
Dickfore said:
Depends on the current passing through your body.


Please elaborate
 
  • #5
All elevators are required to be constructed, installed, and maintained in accordance with ANSI/ ASME A17.1. Reference standards include NFPA 70 (NEC) for the electrical equipment wiring and
NFPA 101 (Life Safety Code), Chapter 6, Features of Fire Protection, and Chapter 7, Building Service and Fire Protection Equipment.
There shall be a 300-V limitation on all operating control and signal circuits and related equipment, including door operators. Exceptions are permitted for 25 to 60 Hz ac if the current cannot under any conditions exceed 8 mA, or for dc voltage if the current cannot, under any circumstances, exceed 30 mA.
For example, 1/10 of an ampere (amp) of electricity going through the body for just 2 seconds is enough to cause death. The amount of internal current a person can withstand and still be able to control the muscles of the arm and hand can be less than 10 milliamperes (milliamps or mA). Currents above 10 mA can paralyze or “freeze” muscles. When this “freezing” happens, a person is no longer able to release a tool, wire, or other object. In fact, the electrified object may be held even more tightly, resulting in longer exposure to the shocking current. For this reason, handheld tools that give a shock can be very dangerous. If you can’t let go of the tool, current continues through your body for a longer time, which can lead to respiratory paralysis (the muscles that control breathing cannot move). You stop breathing for a period of time. People have stopped breathing when shocked with currents from voltages as low as 49 volts. Usually, it takes about 30 mA of current to cause respiratory paralysis. Currents greater than 75 mA cause ventricular fibrillation (very rapid, ineffective heartbeat). This condition will cause death within a few minutes unless a special device called a defibrillator is used to save the victim. Heart paralysis occurs at 4 amps, which means the heart does not pump at all. Tissue is burned with currents greater than 5 amps.
The amount of current passing through the body also affects the severity of an electrical shock. Greater voltages produce greater currents. So, there is greater danger from higher voltages. Resistance hinders current. The lower the resistance (or impedance in
AC circuits), the greater the current will be. Dry skin may have a resistance of 100,000 ohms or more. Wet skin may have a resistance of only 1,000 ohms. Wet working conditions or broken skin will drastically reduce resistance. The low resistance of wet skin allows current to pass into the body more easily and give a greater shock. When more force is applied to the contact point or when the contact area is larger, the resistance is lower, causing stronger shocks.
The path of the electrical current through the body affects the severity of the shock. Currents through the heart or nervous system are most dangerous. If you contact a live wire with your head, your nervous system will be damaged. Contacting a live electrical part with one hand—while you are grounded at the other side of your body will cause electrical current to pass across your chest, possibly injuring your heart and lungs.


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Creative thinking is enjoyable, Then think about your surrounding things and other thought products. http://electrical-riddles.com
 
  • #6
Could anyone please confirm me that which of AC or DC current holds the body and which of it throws off when it is touched on and why!
 
  • #7
Around the turn of the century (1899-1900), Edison and Tesla debated about whether ac or dc was safer, and which was better for electrocutions. Dogs, horses, and even an elephant were electrocuted in public as demonstrations of the lethality of electric shock. Google " AC DC Edison Tesla Westinghouse electrocution"

Bob S
 

What is the difference between 230V AC and 230V DC?

230V AC (alternating current) and 230V DC (direct current) are two different forms of electrical current. AC is the type of current that is used in most household appliances and is constantly changing direction, while DC is the type of current that is used in batteries and electronic devices, and flows in one direction.

Which is more commonly used, 230V AC or 230V DC?

230V AC is more commonly used because it is easier to convert to different voltages using transformers, making it more versatile for different applications. DC, on the other hand, is typically used for specific devices and applications, such as electronic circuits.

Is 230V AC or 230V DC more dangerous?

Both 230V AC and 230V DC can be dangerous if not handled properly. However, AC is typically considered more dangerous because it can cause muscle contractions and stop the heart's rhythm, whereas DC can cause burns and tissue damage. The severity of the danger also depends on the amount of current flowing through the body.

Which type of current is used in homes?

Most homes use 230V AC because it is the standard voltage used in most countries. DC is typically only used in specific devices, such as phones and laptops, which have converters to change the voltage to DC for charging the battery.

Are there any advantages to using 230V DC over 230V AC?

There are some advantages to using 230V DC, such as being more efficient for long-distance power transmission and causing less interference with electronic devices. However, the infrastructure and equipment needed for DC power transmission are more expensive and not as widely available as AC power, making it less practical for everyday use.

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