ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
dsk 13
Admin 8
Recent Posts
Grid problem??
by annemarie1. 08/21/17 01:10 PM
Bathroom electrical
by doc. 08/19/17 06:53 AM
electircal ageing test on IPC
by SIAME. 08/15/17 02:43 AM
electrical aging test on IPC
by gfretwell. 08/15/17 12:27 AM
"Line level" audio on Cat 5?
by gfretwell. 08/08/17 10:39 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,044 Are you busy
175,661 Re: Forum
167,887 Need opinion
Who's Online Now
0 registered members (), 70 guests, and 13 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#163048 - 04/29/07 09:36 PM Nasty Fire Video  
Zapped  Offline
Member
Joined: Oct 2002
Posts: 482
Huntington Beach, CA, USA
Apparently, this is all caused by the downed power line you see at the beginning of the video. Not what we wanna see, ever.

http://www.liveleak.com/view?i=87b_1177809849


Work Gear for Electricians and the Trades

#163050 - 04/29/07 09:48 PM Re: Nasty Fire Video [Re: Zapped]  
frenchelectrican  Offline
Member
Joined: Feb 2003
Posts: 939
Wi/ Paris France { France for ...
shocked now that cooking there i can see why the fire dept have to wait until the poco kill the power to get that fire out that pretty instene there

Merci, Marc


Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)


#163054 - 04/29/07 10:57 PM Re: Nasty Fire Video [Re: frenchelectrican]  
JCooper  Offline
Member
Joined: Dec 2002
Posts: 228
Kendall Park, NJ USA
Is there any reason the OCPD did not open, even if it is on the POCO side? That seemed to be a pretty big fault


#163056 - 04/30/07 12:03 AM Re: Nasty Fire Video [Re: JCooper]  
Celtic  Offline
Member
Joined: Feb 2005
Posts: 361
NJ
That video is from 2004.

I was able to just barely read the sign at about 4:09 ....Aldo's

That was a nightclub in Lyndhurst, NJ

Here is the accompaning story:
Fire destroys Lyndhurst nightspot
http://www.northjersey.com/page.php...ZUVFeXkzJmZnYmVsN2Y3dnFlZUVFeXk2NTY2OTkw


~~ CELTIC ~~
...-= NJ =-...

#163068 - 04/30/07 09:21 AM Re: Nasty Fire Video [Re: Celtic]  
Zapped  Offline
Member
Joined: Oct 2002
Posts: 482
Huntington Beach, CA, USA
Thanks for the added info Celtic.

And yes Cooper, that's my question exactly. This went from a nasty arc to a devestaing fire. Isn't the job of an overcurrent device specifically to avoid fires and protect the installation? This is obviously a massive failure all the way around.

Any linemen in here know why this happened, and what was supposed to happen when the line fell?


#163073 - 04/30/07 11:27 AM Re: Nasty Fire Video [Re: Zapped]  
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
Quote
The fire spread to the electrical system, which set off a series of explosions.


From the article it sounds like the fire is what caused the electrical arcing. I’m guessing that the fire melted the insulation on the service conductors feeding the building.


Curt Swartz

#163078 - 04/30/07 12:22 PM Re: Nasty Fire Video [Re: caselec]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,103
Estero,Fl,usa
Service conductors essentially have no overcurrent protection. On my street we have 3 transformers feeding a 120/240 "bus" that serves about 10 houses. If overall demand is low you could see virtually all of that power in one SE fault. I doubt you could ever blow a primary fuse.


Greg Fretwell

#163169 - 05/03/07 12:33 AM Re: Nasty Fire Video [Re: gfretwell]  
jraef  Offline
Member
Joined: Jul 2004
Posts: 101
San francisco, CA, USA
As spectacular as that arc fire looked, the fact that it was continuing to arc instead of blowing up was indicative of it being a high resistance ground fault. That would explain why the SCPD did not clear it; it wasn't pulling sufficient current to blow the fuses or trip the breaker. That video makes a great argument for arcing ground fault detection devices.


JRaef


Member Spotlight
Posts: 165
Joined: March 2007
Show All Member Profiles 
Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.020s Queries: 15 (0.004s) Memory: 0.7940 MB (Peak: 0.9589 MB) Zlib enabled. Server Time: 2017-08-21 23:34:26 UTC