ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
sparky 4
Recent Posts
Dimmable LED 2x4 lay in fixtures
by gfretwell. 12/13/17 09:49 PM
2017 NEC Changes
by sparky. 12/13/17 06:57 PM
Casino Wiring methods
by HotLine1. 12/09/17 10:44 AM
Ground wire Size to water Line.
by HotLine1. 12/05/17 12:11 PM
Flexible conduit to an outside Spa
by gfretwell. 12/05/17 12:28 AM
New in the Gallery:
Gallery Test
Popular Topics(Views)
243,045 Are you busy
179,480 Re: Forum
170,405 Need opinion
Who's Online Now
0 registered members (), 29 guests, and 10 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#75032 - 02/11/07 11:55 PM high bay lighting keeps tripping breakers  
Clydesdale  Offline
Member
Joined: Nov 2004
Posts: 138
My freind just recently started a business and rents an 18,000 square foot warehouse. Off the top of my head, there are about a dozen lighting circuits. The breakers should really all be replaced, and there are signs of overload in the wires(insulation falling off inside the load centers)A few of the breakers keep tripping, so I replaced them with new ones. He keeps calling me to change the breakers. As of right now, I still have a year left before I can take my journeyman's license. What would you do?


Work Gear for Electricians and the Trades

#75033 - 02/12/07 01:22 AM Re: high bay lighting keeps tripping breakers  
Elviscat  Offline
Member
Joined: Aug 2005
Posts: 214
Seattle Washington USA
if insulation is falling off the wires it's almost certainley time for a re-wire. In my opinion.


#75034 - 02/12/07 05:44 AM Re: high bay lighting keeps tripping breakers  
jdo1942  Offline
Junior Member
Joined: Nov 2005
Posts: 31
st. louis, mo. usa
I agree with last poster that it is time to rewire, but it sound like you have marginal circuit sizing and under size wire. I suggest you increase the number of circuits and increase the wire size for voltage drop.

This sames like are there just too many lights on a circuit. While circuit is not overloaded the it probably is pushing the 80% load. You need to get the load down so you are pulling no more than 80% including the 125% for continuous duty.


#75035 - 02/12/07 10:27 AM Re: high bay lighting keeps tripping breakers  
stevecheyenne  Offline
Member
Joined: Nov 2006
Posts: 38
Yorba Linda, CA
Have you put an amprobe on the wiring to see what it is you're dealing with?

How old is this installation? What kind of fixtures are they? What kind of wire is it?

[This message has been edited by stevecheyenne (edited 02-12-2007).]


#75036 - 02/12/07 04:43 PM Re: high bay lighting keeps tripping breakers  
Tom  Offline
Member
Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA
If the breakers are being used to control the lights, you should make sure that they are HID rated (it will be marked on the breaker, you usually have to special order these).


Few things are harder to put up with than the annoyance of a good example.


Member Spotlight
lil suzi
lil suzi
Midwest
Posts: 57
Joined: August 2003
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: 0.011s Queries: 14 (0.003s) Memory: 0.7688 MB (Peak: 0.9096 MB) Zlib enabled. Server Time: 2017-12-14 20:45:07 UTC