ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Danish type K Sockets
by winston_1 - 10/25/21 07:30 PM
Flexible Conduit?
by gfretwell - 10/24/21 01:59 AM
May I backfeed 3 phase transformer?
by dsk - 10/22/21 04:37 AM
Wire sizing
by gfretwell - 10/21/21 10:12 PM
GFCI's pops in large numbers
by dsk - 10/21/21 02:03 AM
New in the Gallery:
240/208 to a house
240/208 to a house
by wa2ise, October 9
Now you know.
Now you know.
by Tom_Horne, September 7
Who's Online Now
0 members (), 36 guests, and 16 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
Joined: Jan 2004
Posts: 171
M
Merlin Offline OP
Member
I spoke with the Phillips lighting rep today. He is as baffled as myself and the supply house manager. Rep suggested that I remove lamps, power off fixtures, and reinstall the lamps. He thought that since I installed them in "hot" fixtures that could casue an issue. The supply house has ordered a new box of lamps and 4 new ballasts at request of rep, to try and correct the issue. I will see tomorrow what happens.

Joined: Jan 2004
Posts: 171
M
Merlin Offline OP
Member
Well, the problem is resolved. I simply replaced the lamps with some new ones from a different case. We actually changed the color of lamps as well. The problem lamps were 841's and I now have 735's in there. Magically....no problems now.

Joined: Jun 2004
Posts: 1,273
T
Member
http://hyperphysics.phy-astr.gsu.edu/hbase/waves/standw.html


You've made your first real-world acquaintance with standing wave resonance.

That's what causes swirls in air columns/ mercury vapor tubes/ fluorescent lights.

Cheers.


Tesla
Joined: Jan 2002
Posts: 70
Member
May sound funny but I have had this same thing happen and turned the lamp around and the swirl stopped.

Page 2 of 2 1 2

Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *

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

 

Member Spotlight
pcsailor
pcsailor
Minneapolis, MN, USA
Posts: 21
Joined: September 2019
Top Posters(30 Days)
dsk 7
wa2ise 1
Popular Topics(Views)
284,930 Are you busy
217,466 Re: Forum
203,765 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5