Home |
Search |
Today's Posts |
#131
![]() |
|||
|
|||
![]()
Paul Burridge wrote:
The question seems daft, but bear with me, gentlemen. Has anyone ever had an electric shock that they feel lucky to have survived? p. -- "I believe history will be kind to me, since I intend to write it." - Winston Churchill Nothing like that, yet. Rewired some factory emergency lights and replaced several more, one leg of a 480V circuit, live. Work careful and no problems. Removing a high-pressure bulb from a high-voltage circuit, glass envelope broke in my hand while trying to unscrew it, didn't know I could move that fast. Rewiring a conveyor, co-worker said the power was off, sparks flew when I cut the cable. I just stared at the remains of my pliers and then at him. ONE HAND in contact with the work, nothing else, work on insulated surface, heavy rubber sole boots, and anything else I can think of. Worked at one plant that had had a color blind electrician, that really taught me caution, never knew what color wired carried what voltage. |
#132
![]() |
|||
|
|||
![]() "Bob Yates" wrote in message ... Rewiring a conveyor, co-worker said the power was off, sparks flew when I cut the cable. I just stared at the remains of my pliers and then at him. ONE HAND in contact with the work, nothing else, work on insulated surface, heavy rubber sole boots, and anything else I can think of. I worked college summers as an electrician. Cut a live lamp circuit with my brand new pliers, leaving a 14-ga notch. Years later, I saw "my" pliers in the lab tech's toolbox. He said he had done the same thing a few years back. I didn't really believe they were his until I found my old pliers in the bottom of my garage toolkit. |
#133
![]() |
|||
|
|||
![]() "Bob Yates" wrote in message ... Rewiring a conveyor, co-worker said the power was off, sparks flew when I cut the cable. I just stared at the remains of my pliers and then at him. ONE HAND in contact with the work, nothing else, work on insulated surface, heavy rubber sole boots, and anything else I can think of. I worked college summers as an electrician. Cut a live lamp circuit with my brand new pliers, leaving a 14-ga notch. Years later, I saw "my" pliers in the lab tech's toolbox. He said he had done the same thing a few years back. I didn't really believe they were his until I found my old pliers in the bottom of my garage toolkit. |
#134
![]() |
|||
|
|||
![]()
Chris1 wrote:
In article , "Michael A. Terrell" wrote: I find that very interesting, since every chocolate bar I have ever had was wrapped in aluminum foil. I always thought it was just shiny paper. There's not much Aluminum there, if any. Chris A very thin aluminum foil, with a paper backing. Use an Ohm meter on a piece to see that it is conductive. -- Its August 5, 2003, so I'm 51 today! Michael A. Terrell Central Florida |
#135
![]() |
|||
|
|||
![]()
Chris1 wrote:
In article , "Michael A. Terrell" wrote: I find that very interesting, since every chocolate bar I have ever had was wrapped in aluminum foil. I always thought it was just shiny paper. There's not much Aluminum there, if any. Chris A very thin aluminum foil, with a paper backing. Use an Ohm meter on a piece to see that it is conductive. -- Its August 5, 2003, so I'm 51 today! Michael A. Terrell Central Florida |
#136
![]() |
|||
|
|||
![]()
Eric in the Evening wrote:
Hey Charles, When I was a "frameman" (oops, make that "frame attendant") in the Alameda Central Office, had exactly the same type of "shock". Air conditioning had broken, we were in t-shirts, about 90+ degrees in the CO on a summers day and sweating. Reaching through the frame from the equipment side hit someone who was ringing and became a human bell clapper for about 20-30 seconds. All this at the top of a rolling ladder. My fellow employees and myself got a laugh out of it (me later). Actually happened a few times over my 27 year career. At least I'm not unique in that sense. Thanks for sharing...... Eric KA6USJ Eric, In my days as a Frame Ape, I got across one of the Darned Gov't special circuits that had a lot more than ring voltage on it. Only once though, I can still remember the special warning tags they hadon the lines at all the blocks, and like you Iwas at the top of the ladder when it happened. And oh yes I also got bit by ring more than once. Remember the way we found shorts? Bill Higdon |
#137
![]() |
|||
|
|||
![]()
Eric in the Evening wrote:
Hey Charles, When I was a "frameman" (oops, make that "frame attendant") in the Alameda Central Office, had exactly the same type of "shock". Air conditioning had broken, we were in t-shirts, about 90+ degrees in the CO on a summers day and sweating. Reaching through the frame from the equipment side hit someone who was ringing and became a human bell clapper for about 20-30 seconds. All this at the top of a rolling ladder. My fellow employees and myself got a laugh out of it (me later). Actually happened a few times over my 27 year career. At least I'm not unique in that sense. Thanks for sharing...... Eric KA6USJ Eric, In my days as a Frame Ape, I got across one of the Darned Gov't special circuits that had a lot more than ring voltage on it. Only once though, I can still remember the special warning tags they hadon the lines at all the blocks, and like you Iwas at the top of the ladder when it happened. And oh yes I also got bit by ring more than once. Remember the way we found shorts? Bill Higdon |
#138
![]() |
|||
|
|||
![]()
Paul Burridge wrote:
Ground Fault Circuit Interruptor. How splendid! We call them Residual Current Circuit Breakers in England. That may not be an accurate translation. As I understand it, the GFCI requires a ground connection in order to operate, while the RCB does not. The RCB functions on the difference between the outgoing 'live' current and the return current in the neutral. In the British house wiring system, those two currents should be *exactly* equal, and the difference (the 'residual current') should be zero. Any difference at all means something's wrong - ping - you're disconnected. A typical household RCB will trip on a 60 or 100mA difference in supply current surges up to 60A. That's pretty good common-mode rejection! RCDs can also be cascaded, so an even more sensitive RCD can be used to protect an outdoor mains socket or a workbench. We used to have something like GFCIs over here, but changed to RCDs because RCDs still work if the entire house ground connection has failed. -- 73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) Editor, 'The VHF/UHF DX Book' http://www.ifwtech.co.uk/g3sek |
#139
![]() |
|||
|
|||
![]()
Paul Burridge wrote:
Ground Fault Circuit Interruptor. How splendid! We call them Residual Current Circuit Breakers in England. That may not be an accurate translation. As I understand it, the GFCI requires a ground connection in order to operate, while the RCB does not. The RCB functions on the difference between the outgoing 'live' current and the return current in the neutral. In the British house wiring system, those two currents should be *exactly* equal, and the difference (the 'residual current') should be zero. Any difference at all means something's wrong - ping - you're disconnected. A typical household RCB will trip on a 60 or 100mA difference in supply current surges up to 60A. That's pretty good common-mode rejection! RCDs can also be cascaded, so an even more sensitive RCD can be used to protect an outdoor mains socket or a workbench. We used to have something like GFCIs over here, but changed to RCDs because RCDs still work if the entire house ground connection has failed. -- 73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) Editor, 'The VHF/UHF DX Book' http://www.ifwtech.co.uk/g3sek |
#140
![]() |
|||
|
|||
![]()
On Thu, 07 Aug 2003 11:29:46 +0100, Paul Burridge
wrote: The question seems daft, but bear with me, gentlemen. Has anyone ever had an electric shock that they feel lucky to have survived? p. This guy did believe it or not. http://www.electrical-contractor.net/electrocution.htm -- Regards, Boris Mohar Got Knock? - see: Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/ Aurora, Ontario |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Do you recognize yourself ? | Antenna | |||
WTB: Brass "Signal Electric" key | Boatanchors | |||
WTB: Brass "Signal Electric" key | Boatanchors | |||
102-E Western Electric Tube info needed | Boatanchors | |||
FA: Pair Western Electric 106F Speakers! 6-Hrs..Left! | Boatanchors |