Monday 31 October 2016

Current kills you!!!! Not voltage


The sign "Danger High Voltage,Keep Out" always piss you off when you go near high,medium or low voltage transmission,generators,transformers and so on. So why these signs always warn people to scare away to avoid get electric shock? Well the common answer is you get shock when you accidentally touch leakage cable or electrical panel. This answer only a regular person says,but a trained professional electrician will stay cool even he/she get near high voltage. So what actually make a person get shock? Well lets talk about this question.

Every person in the world have been get electric shock by many ways,including me XD. If you a electrical enthusiast, you will know what is voltage,amperage and resistance that you learn in fundamentals of electricity. There's the clue to find out what makes us get electric shock.


To understand further, lets open a tab water. When you open a tab water the water will flow out. Imagine the water pressure is acts as a voltage. Voltage is a form of energy that has potential to flow in any direction in a circuit. The water flow that comes out of tab actsa amperage or current. Current means flowing of electron to one point and to another point.
The the tab valve or size represent as  resistance.

When water pressure is high, the water flow will be high or vise verse if the water pressure is low. In change if you add resistance you can control the water flow that represent as current. So if high pressure as high voltage with high resistance can less the amount of current. In this case even less current with high voltage you can actually get harm because the high voltage pushing the current in high potential push the current so high. But this harm cannot be done by low potential voltage. It must go high to low.


Let say your house have 240V with 100mA current. This 240V will push the 100mA current in high potential to low potential. If you touch the wire that carrying this potential, you will get shock and didn't get harm because the current is less to harm you even it flows in high potential. In High voltage like 22KV in transmission line has high potential and high current.
This high voltage flows the current in high potential. This will definitely will burn you if you touch it.  

In conclusion, voltage is the energy that push the current flows in the conductor. So you need voltage and current to make you get shock!!!!!! Current is the real culprit to get you  shock.
 

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