Electronic Projects, forums and more.

Go Back   Electronic Circuits Projects Diagrams Free > Electronics Forums > General Electronics Chat


General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion?

Reply
 
Tools
Old 4th July 2009, 01:25 AM   #1
Default If you touch just one phase..

..will you get electrecuted?
PWU is offline  
Old 4th July 2009, 01:27 AM   #2
Default

1 phase out of 3? yes.
doubleM is offline  
Old 4th July 2009, 01:40 AM   #3
Default

depends. are your feet on the ground? then yes.

but, if you fell from a hot air balloon and grabbed a high tension line on one of the large transmission lines and were hanging there in the air only holding that one wire you'd be fine. well... fine being relative, of course.
OutToLunch is offline  
Old 4th July 2009, 01:45 AM   #4
Default

Generally nobody is electrocuted by just touching a life wire.

Birds would fall off fried of a high tension wire if they closed a circuit to ground.
(Their legs are too short to touch ground. )

There has to be current flow from life to neutral or earth to get electrocuted. The current has to have a certain strength (>15mA at 230VAC mains).

Standing on a wooden ladder and touching a life wire won't do any harm.

Current flow does not depend on the number of life wires, but on current flow only.

You might want to see the proper technique to get electrocuted. Check out the attachment.

Boncuk
Attached Files
File Type: zip CRISPY.zip (3.11 MB, 39 views)
__________________
Proper Planning Prevents Piss Poor Performance

Last edited by Boncuk; 4th July 2009 at 02:14 AM.
Boncuk is online now  
Old 4th July 2009, 07:55 AM   #5
Default

Quote:
Originally Posted by Boncuk View Post
...
Standing on a wooden ladder and touching a life wire won't do any harm.
...
You might want to try that sometime before you sound TOO confident about it.
Mr RB is offline  
Old 4th July 2009, 08:32 AM   #6
Default

Quote:
Originally Posted by Mr RB View Post
You might want to try that sometime before you sound TOO confident about it.
I did it and I'm still alive. (Of course the ladder must be dry. )
__________________
Proper Planning Prevents Piss Poor Performance

Last edited by Boncuk; 4th July 2009 at 08:34 AM.
Boncuk is online now  
Old 4th July 2009, 11:00 AM   #7
Default

Quote:
Originally Posted by Boncuk View Post
I did it and I'm still alive. (Of course the ladder must be dry. )
I agree you won't be electrocuted, but you might still get a little shock. Your body has to reach the same potential as the live wire. No current will be flowing continuous, but just enough to let you know you touched something shocking
__________________
Don’t argue with idiots.......they will drag you down to their level and then beat you with experience!
SPDCHK is offline  
Old 4th July 2009, 11:31 AM   #8
Default

I once accidentally worked on a live circuit whilst on a wooden ladder - I pulled the wrong fuse. Didn't notice anything until I earthed myself to the cable box - then it hurt.

Mike.
Pommie is online now  
Old 4th July 2009, 12:00 PM   #9
Default

Actually you don't have to be earthed or be touching another wire to be fried.

If depends on the frequency. At low frequencies your capacitance will be negligible so only a tiny current will flow, at high frequencies your capacitance will be significant so a high current can flow giving you a severe burn. Luckily higher frequencies don't shock you so much but the burns can be pretty nasty.
__________________

I do not answer private messages asking for help because no one else can: benefit from advice I may give or correct me if I'm wrong.

Please ask on the open forum if you have a question and I'll be happy to help,
if I know the answer.
Hero999 is offline  
Old 4th July 2009, 12:11 PM   #10
Default

Quote:
Originally Posted by Boncuk View Post

You might want to see the proper technique to get electrocuted. Check out the attachment.

Boncuk
oh wow that was pretty bad. Did he die?

I know I'll be avoiding touching phase wires...
PWU is offline  
Old 4th July 2009, 12:54 PM   #11
Default

Quote:
Originally Posted by PWU View Post
oh wow that was pretty bad. Did he die?
I guess the title told you enough. He was well done!
__________________
Proper Planning Prevents Piss Poor Performance
Boncuk is online now  
Old 4th July 2009, 01:06 PM   #12
Default

Quote:
Originally Posted by Hero999 View Post
Actually you don't have to be earthed or be touching another wire to be fried.

If depends on the frequency. At low frequencies your capacitance will be negligible so only a tiny current will flow, at high frequencies your capacitance will be significant so a high current can flow giving you a severe burn. Luckily higher frequencies don't shock you so much but the burns can be pretty nasty.
The higher the frequency the better the chance to get sterilized, but not electrocuted.

The radar of the RF4-E (Phantom) has a pulse power of 60KW which you don't notice touching the antenna horn. After half a dozen of touches you won't have to take care of birth control anymore.

I once approached the antenna mast of a LORAN-transmitter. My friend (who maintained the station told me to jump towards the mast from 1m distance and hold on the metal).

At that distance my entire body disappeared in St. Elmo's fire, but it didn't hurt at all - just tickled a bit.
__________________
Proper Planning Prevents Piss Poor Performance
Boncuk is online now  
Old 4th July 2009, 08:29 PM   #13
Default

If the voltage is very high, such as a high tension power line, you can get noticeable current from just your body capacitance, even if you are not touching ground. I once saw a video of some workers working on an energized line from a helicopter. They approached the line in the air and then threw a wire across the line from the helicopter to equalize the voltage. You could see an arc before the wire touched the line, just from the capacitance of the helicopter.
__________________
Carl
Curmudgeon Elektroniker
crutschow is offline  
Old 4th July 2009, 08:47 PM   #14
Default

You say that if you stand barefoot on the ground and touch the live wire then current would flow through your body.
But the ground resistance is very large, so isnt it still considered an open circuit?

Last edited by alphacat; 4th July 2009 at 08:47 PM.
alphacat is offline  
Old 4th July 2009, 10:00 PM   #15
Default

Quote:
Originally Posted by alphacat View Post
You say that if you stand barefoot on the ground and touch the live wire then current would flow through your body.
But the ground resistance is very large, so isnt it still considered an open circuit?
The ground resistance depends upon how moist it is. For even low values of moisture the resistance is likely low enough to cause a lethal current through your body from a power line.
__________________
Carl
Curmudgeon Elektroniker
crutschow is offline  
Reply

Tags
phase, touch

Thread Tools
Display Modes


Similar
Title Starter Forum Replies Latest
Phase shift - Phase Angle windozeuser General Electronics Chat 20 20th March 2009 10:39 AM
Phase Sequence or Phase Present neelam29 General Electronics Chat 7 23rd May 2007 11:25 AM
Three Phase Versus Single Phase For EV fzn10 General Electronics Chat 4 31st July 2006 09:39 AM
3 phase to single phase eyeofthefly Electronic Projects Design/Ideas/Reviews 34 14th November 2003 04:17 PM
converting 3 phase motor to single phase norberto fines Electronic Projects Design/Ideas/Reviews 6 2nd September 2003 11:21 PM



All times are GMT. The time now is 04:40 AM.


Electronic Circuits  |  Learning Electronics
eXTReMe Tracker