I’m not an expert on the conditions under which a Taser should be used. Nor am I a doctor to be able to tell you under what medical conditions Tasering could be dangerous.
But I am electronic engineering technologist. At least my BSc. EET degree telles me so.
And the past week I have heard numerous phone callers to Radio or TV talk shows talk about the voltage that kills people. I have probably heard a couple of TV/Radio Hosts repeat the phrase that it is not the amperage that kills you, but the voltage.
This is grossly inaccurate. It is the current that kills you. And actually the numbers that were given to me in school was that 500 milliAmps to 1 Amp is enough to fry you. Yet after investigating Taser.com I discovered that the current Tasers put out is in the neighbourhood of 2.1 milliAmps. You get more current from sticking your tongue between the two terminals of a 9V battery.
For clarification, Voltage does not kill directly at all. What it does is cause your muscles to contract. There are reports that Voltage can throw a man across a room. This is actually Voltage causing muscles to contract enough to have this man throw himself across the room.
The other lesson we learned is that you never let electricity cross your heart. i.e. you never touch something electronic with one hand while the other one is grounded. This is why electricians almost always have one hand in their pocket which means any jolt would travel down the side of their body to the ground through their legs and not cross the chest.
In light of all the recent Taser talk, I will wait for investigations/inquiries to take their course but my guess is that Tasers need to be fired away from the chest of a person to minimize the chances of the voltage contracting a heart muscle to the point it gives out.
On a similar vein, In this regard, I must point out that there was an episode of Mythbusters which they created a shocking statue and grabbed the two terminals with their hands. I was simply astounded that the show would let it’s hosts get shocked this way. Luckily no one was hurt or killed.