ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Recent Posts
VFD MotorFeeders
by gfretwell. 10/17/17 10:01 PM
What do you do?
by gfretwell. 10/17/17 01:08 AM
Good ol' copper pipe in the fuse holder trick
by HotLine1. 10/16/17 07:16 PM
Generator Cable Sizing
by HotLine1. 10/16/17 07:13 PM
Another generator question
by HotLine1. 10/16/17 07:02 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
241,352 Are you busy
177,303 Re: Forum
168,928 Need opinion
Who's Online Now
0 registered members (), 39 guests, and 12 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#119846 - 02/03/05 09:56 PM Breaker Trips after Half-Hour Delay  
Admin  Offline

Administrator
Member
Joined: Oct 2000
Posts: 3,458
NY, USA
Quote
I went to troubleshoot a tripped breaker, and after taking all the load off of the circuit and putting on one lite at a time, I still could not narrow it down to any one thing. I did find that someone had used a ground for a neutral for the return of about 4amps for some lites(It was done so the homeowner would have a 3way) After about 3 hrs of tracing each wire, this is what was found in a boxed out a/c return.

- richard
[Linked Image]

[Linked Image]

[Linked Image]


Tools for Electricians:

#119847 - 02/03/05 10:55 PM Re: Breaker Trips after Half-Hour Delay  
Dave55  Offline
Member
Joined: May 2004
Posts: 697
Crystal Lake, Illinois, USA
From the second picture it looks like a nail pierced the NM. Is this what you think happened?

Dave


#119848 - 02/04/05 06:00 PM Re: Breaker Trips after Half-Hour Delay  
richard  Offline
Member
Joined: Aug 2003
Posts: 95
L.I. New York
Yes, or a staple. There was a staple next to it. I might have smelled it burning, but the heat was set at about 80, and the return was constantly pulling the air in. They are really lucky.


#119849 - 02/04/05 06:41 PM Re: Breaker Trips after Half-Hour Delay  
cpal  Offline
Member
Joined: May 2004
Posts: 162
Cohasset MA
Was that a bed room circuit????

Charlie


#119850 - 02/04/05 07:32 PM Re: Breaker Trips after Half-Hour Delay  
richard  Offline
Member
Joined: Aug 2003
Posts: 95
L.I. New York
It was in the dining room wall, they had a pipe on the secound floor burst, and the water made its way to the hole in the wire. As the connection between the hot and the ground/neutral was made, the wire heated and the breaker tripped.I think the water could have bubbled, and thats why it took so long to trip.



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: 0.012s Queries: 14 (0.003s) Memory: 0.7679 MB (Peak: 0.9076 MB) Zlib enabled. Server Time: 2017-10-18 05:33:00 UTC