Embedded Systems Conference
Breaking News
Engineering Investigations

Getting a buzz

NO RATINGS
View Comments: Newest First | Oldest First | Threaded View
kfield
User Rank
Author
An electrifying story
kfield   9/25/2013 12:20:42 PM
NO RATINGS
Wow, you were extremely lucky in this situation. 

sharps_eng
User Rank
Author
re: Getting a buzz
sharps_eng   1/10/2012 11:36:19 PM
NO RATINGS
I hope that these old-time stories have some power to wake up people 'on active service'. The safety records are full of examples of repeated accidents following near-misses like the one described. It should be noted that ionizing fields like RF from a transmitter or mobile phone greatly reduces the hazardous distance, increasing the risk of a strike.

David Ashton
User Rank
Author
re: Getting a buzz
David Ashton   1/4/2012 1:41:40 AM
NO RATINGS
The safe approach distance is one that stops you getting an arc jumping across onto you. Nevertheless the field gradient at that distance would still be considerable, so if you weree not in contact with the metal structure at any time you'd build up quite a charge. And how about these guys: http://www.youtube.com/watch?v=OfnYuANLh5k

zeeglen
User Rank
Author
re: Getting a buzz
zeeglen   1/4/2012 12:20:38 AM
NO RATINGS
Was about to ask the safe distance, thanks David you answered my question. Still a scary situation, Dwight, not only the HV but dangling 80 feet (25 meters) above the ground. What if you had stood up on the crossbar? (is that possible?) Am surprised that your managers did not inform you ahead of time to expect this effect.

David Ashton
User Rank
Author
re: Getting a buzz
David Ashton   1/3/2012 9:34:07 PM
NO RATINGS
I work for an eletricity utility and although my dept doesn't work on the wires, we have to do assessments every year in which we have to give safe approach distances. We usually only go up to 66KV (another co does the 132KV distribution) but I looked up our tables and it gives the minimum approach disstance for 132KV as 1200mm - about 4 feet, so you were above that. The above is for "instructed persons" ie those who know what they are doing - for others it is 3 metres (about 10 feet). Sounds like you were cutting it a bit fine though....

More Blogs from Engineering Investigations
The history of scientific discovery is littered with examples of "pathological science." Just because we want something doesn't make it so.
Under a mild-sounding title, software safety expert Sean Beatty will be presenting a design teardown for a detonator at ESC Boston.
From faux innovations, to fake artificial intelligence, to an Internet-ready Porta-Potty, here's a look at our favorite hoaxes throughout engineering history.
Commercial, industrial, and military-grade designs are about more than paper specs. They're about human nature.
Sometimes, it's the mundane things in electrical and electronic devices that make the difference. The strain relief on an air conditioner's line cord saved the day when the unit fell out of the window.
Most Recent Comments
dt_hayden
 
dt_hayden
 
Max The Magnificent
 
Max The Magnificent
 
junko.yoshida
 
David Ashton
 
sw guy
 
bec0
 
sixscrews
Flash Poll
April 2015 Cartoon Caption Contest: The Mighty Hamster
April 2015 Cartoon Caption Contest: The Mighty Hamster
Of all the exhibits in the Pre-Apocalypse Era Museum, Breek was always in awe of the unearthed details and true-to-scale reproduction of a technological creation space that the long gone humans had once inhabited.
138 comments
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Top Comments of the Week