simple.blue
{Friday, February 12, 2010 . Why must our hands be dry when we touch electrical circuit?}

We have always been told never to touch electrical appliaces when our hands are wet. Ever wonder why? Of course, our parents will say that we may get electrocuted. Well, eletrocution is how i can summarizd the explanation of not touching electrical appliances when hands are wet. Here's the explanation:
The current is flowing through electrical circuits and when you place your wet hands on it, this will cause current to travel through you as water is a conductor of electricity, thus electrocuting you.

This is a few notes about what are the effects of electrical shocks as well as what to do when someone is being electrocuted:

Physiological effects of electric Shocks
-If we touch the naked wire then we get some shock which causes pain or trauma to our body. If the intensity of shock is little then we will survive but if it some strong shock then we can get serious effects.


-The electric shock generates heat inside our body and if the shock is strong then it will generate a lot of heat and it may burn or damage our tissues. The ultimate effect of burning or damage of tissue can lead to permanent problem inside our body.

-The most significant effect of electrical shock in our body is on nervous system. It blocks the signals produced by the nerve cells from reaching their destinations. Thus they are overloading the nervous system and preventing both reflex and volitional signals from being able to actuate muscles. Muscles triggered by an external (shock) current will involuntarily contract, and there's nothing the victim can do about it.

Rescue operations:
-If a person gets the electric shock then until and unless he/she is released from the connection the person remains electrified. In that situation don't try to touch the electrified person with your hands as it may shock you.


-At first try to switch off the main supply of electricity. If the power can't be switched off then try to free the victim from contact immediately with the help of some non conducing material like plastic pipe, rope, clothing, dry stick or any other similar thing.

-Never try to touch the victim with any metallic object or with bare hands.

-The first three minutes are very important for the victim so act immediately. If the victim is unconscious and isn't breathing then commence resuscitation.

-Quickly send for a doctor.


http://www.allelectricalproducts.com/electrical-safety-guide.html

Here is a video about some safety tips about electricity and if we don't follow these saftey rules, we'll start ba fire. The guy is really ood about explaining this things as his voice is very clear, as well as the words written on the whiteboard:



So, how was it? Good, isn't it? :)

and here's a video about a man who purposely electrocutes himself:


Hope it is helpful. :)


rachel blogged on 7:20 PM

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