ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat Box
Recent Posts
Unusual Well Pump Switch Failure
by sabrown - 10/28/20 04:31 PM
Look at this mess...
by InspectorE - 10/27/20 09:09 PM
New tool
by gfretwell - 10/24/20 11:09 AM
Where is Everyone?
by Bill Addiss - 10/17/20 07:04 PM
New in the Gallery:
Facebook follies, bad wiring
FPE in Germany pt.2
Who's Online Now
1 registered members (Scott35), 18 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
exploding lamps #11144 07/01/02 08:56 PM
Joined: May 2002
Posts: 68
E
Eandrew Offline OP
Member
I was installing some small and short flouresent fixtures, and 7 of the 8 fixtures heated up just fine. But one tube kept blowing out as soon as i turned on the switch to energize the circuit. I went through three lamps like this. What would cause a tube to immediately blow when energized?

Work Gear for Electricians and the Trades
Re: exploding lamps #11145 07/01/02 10:52 PM
Joined: May 2002
Posts: 132
E
elektrikguy Offline
Member
double check the wiring of the sockets from the Ballast or Ballasts. I have come across the odd flourescent fixture mis-wired from factory that could give you this problem.

Re: exploding lamps #11146 07/02/02 02:40 PM
Joined: Aug 2001
Posts: 7,520
P
pauluk Offline
Member
I'd second that. I don't know about your fixtures, but some of our fluoros have the wiring from the end sockets brought back into the middle of the fitting, and it is possible for someone to have crossed the wires so that one filament of the tube is straight across the supply (via the ballast).

Otherwise, it could be something like a shorted ballast or starter.


Featured:

2020 National Electrical Code
2020 National Electrical
Code (NEC)

* * * * * * *

2020 Master Electrician Exam Preparation Combos
2020 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Bill Addiss
Bill Addiss
NY, USA
Posts: 3,961
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
271,031 Are you busy
205,036 Re: Forum
193,149 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.3