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Anonymous Poster

Electric Shock

03/17/2010 10:22 PM

Why a low voltage shock causes death, while high voltage shock causes burn?

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Anonymous Poster
#1

Re: Electric shock

03/17/2010 11:19 PM

electrocution is a factor of current draw through the human body. Generally at larger potentials it is more likely (not always the case as there are numerouse instances of electrocution at high voltages) that the conduction of electricity is via a flash over towards the human conductor i,e not direct contact. This is more likely to lead to the person being blown away from the conduction as opposed to someone who at a lower voltage actually grabbing the live conductor.

Other impacts typically are that at higher voltage isolations are adhered to better, most causes of electric shock/ electrocutions tend to be when complacency sets in.

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#2

Re: Electric shock

03/18/2010 9:30 AM

Some people die from electrical burns, so the overall effect is the same, really.

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Guru

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#3
In reply to #2

Re: Electric shock

03/18/2010 4:25 PM

When a person is electrocuted in low voltage system, the person directly gets contact with the live line (before arc flash occurs) or through some conductive path with live line and current flows through the body and the person dies. There is no significant burning is found in the body.

In case of high voltage, an arc flash occurs before the person gets touch with the live line and the arc flash releases enormous amount of energy to the air media with a rise of high temperature and the person gets burnt.

In both cases, the death is the most common severity that happens. I met one fellow who got shocked in 11 KV system and survived but his body was severely burnt.

- MS

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