Thread: Electrocution
View Single Post
  #146   Report Post  
Posted to uk.d-i-y
Roger Hayter[_2_] Roger Hayter[_2_] is offline
external usenet poster
 
Posts: 3,237
Default Electrocution

On 26 May 2021 at 11:41:19 BST, "Chris Green" wrote:

Kellerman wrote:
On 29/03/2021 23:32, soup wrote:
Many have had a 'belt' from domestic 240Volt wiring through bad luck,
bad judgment or plain stupidity .
Â* Whilst a shock from 240V CAN kill how often does that actually happen
and how many just get thrown across the room into a foetal position
whimpering and crying until the arm unknots and the tingling feeling
goes away.


Hum... tricky one... each persons reaction is different.
Electric shock (no matter what voltage) can cause a bad reaction.
First Aid advice (via My current employers HS dept) is straight to A&E
for a cardiograph.

AC
110V (55-0-55) ouch
240V (Domestic, can be nasty - A&E for anything above a minor touch
advised but not forced to go)
415V (3 phase) = Dead.
Anything greater than 415V = Dead.

DC
Charged capacitor above 50V hurts
Microwave 5kV or more capacitor = very nasty, A&E strongly advised.

Other things much more relevant than the particular voltage you have
touched:-

Where the shock tracks through you, i.e. if it's from one hand to
the other across your chest it's much more likely to do damage
than if it's just across your hand or along a limb.

How dry your skin is and thus how much resistance you present to
the flow of electricity.

How good an earth the 'earthy' end of your shock is, if you're
barefoot on a wet floor it's going to be much worse than if you
have rubber soles on a dry floor.


In the case of shocks from capacitors the total stored energy is also very
important. That is why defibrillators are calibrated in Joules.

--
Roger Hayter