ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Tingle off the water spigot
by dsk. 10/15/18 02:36 PM
Board tester power supply?
by JoeTestingEngr. 10/13/18 12:14 AM
Voltage sag
by Trumpy. 10/12/18 06:59 PM
220/230/240V 60Hz Systems
by Trumpy. 10/12/18 06:50 PM
Linear Power Supply Quits Under Load
by JoeTestingEngr. 10/10/18 08:47 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 6 guests, and 20 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Toast-a-Buss #122549
11/24/05 09:15 AM
11/24/05 09:15 AM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,274
Fullerton, CA USA
Forwarded from Joe Tedesco:

Quote
One night the whole 2nd floor lost power. So I started working backwards , it seems some had connencted a 600amp buss downline on a 250amp feed, as you can see the 250 amp is toast..... Joe, I work in an industrial mill , and I take pictures of it all



[Linked Image]


[Linked Image]

Tools for Electricians:
Re: Toast-a-Buss #122550
11/24/05 11:07 PM
11/24/05 11:07 PM
H
Hemingray  Offline
Member
Joined: Apr 2005
Posts: 199
Lehigh Acres, FL
whoa, was that GLOWING?!


Cliff
Re: Toast-a-Buss #122551
11/25/05 06:58 AM
11/25/05 06:58 AM
G
George Corron  Offline
Member
Joined: May 2001
Posts: 717
Lorton, Va USA
One thing's for certain, at one point it was glowing. [Linked Image]
I often....."acquire" old buss bars for radio grounding, I'm not sure I want these.

Re: Toast-a-Buss #122552
11/27/05 04:31 PM
11/27/05 04:31 PM
mxslick  Offline
Member
Joined: Oct 2004
Posts: 803
Atomic City, ID USA
Glowing indeed! Notice that the failure point appears to be where the busbars were joined?

They would have had to been quite hot for some time to turn yellow like that!


Stupid should be painful.
Re: Toast-a-Buss #122553
11/27/05 06:36 PM
11/27/05 06:36 PM
E
Elviscat  Offline
Member
Joined: Aug 2005
Posts: 214
Seattle Washington USA
I have never worked with busses like, how are those bars joined? could a bad/loose connection have aggravated the problem?

-Will

Re: Toast-a-Buss #122554
11/29/05 02:19 PM
11/29/05 02:19 PM
D
dlhoule  Offline
Member
Joined: Apr 2005
Posts: 73
Saline, MI 48197
Wow, I wonder if an infrared camera would have picked up the problem, before it got to that stage? We do infrared 2x year.


Featured:

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

 

Member Spotlight
HotLine1
HotLine1
Brick, NJ USA
Posts: 7,034
Joined: April 2002
Show All Member Profiles 
Top Posters(30 Days)
sparky 11
Popular Topics(Views)
250,270 Are you busy
187,918 Re: Forum
177,451 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.017s Queries: 14 (0.004s) Memory: 0.9759 MB (Peak: 1.1178 MB) Zlib enabled. Server Time: 2018-10-16 01:45:50 UTC