ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 04/29/17 10:26 AM
201 volt equipment?
by bigpapa. 04/29/17 12:15 AM
Schneider LC1D09
by jraef. 04/28/17 11:05 PM
Electrode boilers question
by annemarie1. 04/27/17 01:40 PM
Why cables look like they do
by LongRunner. 04/26/17 09:36 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,945 Are you busy
169,771 Re: Forum
162,985 Need opinion
Who's Online Now
0 registered members (), 40 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#36206 - 04/01/04 12:34 AM Fluorescent ballist  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
I replaced a bad 120v 4 tube 4' Fluor ballist today and it wouldn't work with the other older style ballist in the fixture. I had to replace them both, then it worked fine. The bad one was really hot. Is there a good way to check if there going bad, completely bad? Sometimes they seem to partially work. Is there a good web site that talks about the inner workings on fluor ballist?


The Golden Rule - "The man with the gold makes the rule"

Work Gear for Electricians and the Trades

#36207 - 04/01/04 01:29 AM Re: Fluorescent ballist  
DougW  Offline
Member
Joined: Jun 2003
Posts: 1,143
North Chicago, IL
A ballast is a transformer.

Try these links: http://www.thekrib.com/Lights/fluor-tech.html
http://www.lightcorp.com/FAQs.cfm



[This message has been edited by DougW (edited 04-01-2004).]


#36208 - 04/01/04 07:19 AM Re: Fluorescent ballist  
SteveMc  Offline
Member
Joined: Feb 2004
Posts: 62
Rock Hill, SC
There are a couple of possible problems here but I would need more information to give you an exact answer. You said it was a 120v 4-lamp ballast but you also said there were two ballasts. You also referred to one of them as the older 'type', by that do you mean one was electronic and the other magnetic? What type lamps were you using, T8 or T12? If you had a magnetic ballast and T12 lamps you may need to change both lamps that are fed by the ballast to get it to work, at least thats what I always do. If you have an electronic ballast and T8 lamps you can just change the bad lamp. BTW you should never mix electronic ballasts and T12 lamps or magnetic ballasts and T8 lamps. Like HID lamps, fluorescent lamps are ballast specific.
As for troubleshooting a fluorescent fixture, the quickest, easiest way is to change the lamps and if that doesn't work change the ballast. That will get your light working and you out the door in about 30 minutes.


#36209 - 04/01/04 09:11 AM Re: Fluorescent ballist  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,259
Fullerton, CA USA
There's a pretty good information source available from Advance at
www.advancetransformer.com/literature/pdf/FLB_PocketGuide.pdf

(You'll need Adobe Reader, available for free).
This has everything from ballast basics to troubleshooting info...S

[This message has been edited by electure (edited 04-01-2004).]


#36210 - 04/01/04 10:24 AM Re: Fluorescent ballist  
aldav53  Offline
Member
Joined: Aug 2001
Posts: 545
Chandler, AZ USA
SteveMc,
The lamps were T12, the new ballist were electronic, and I believe the old ones were magnetic. (I did change both lamps)
As far as troubleshooting, that is the way I've always done it too.
Thanks,


The Golden Rule - "The man with the gold makes the rule"

#36211 - 04/01/04 11:00 AM Re: Fluorescent ballist  
watthead  Offline
Member
Joined: Oct 2001
Posts: 172
South Carolina
aldav53
Be sure you use the proper lamps as shown on the ballast. Many times I have found T8 lamps on T12 electronic ballasts.
This causes short ballast/lamp life. Sometimes we see an electronic ballast and just take for granted that it uses T8's, but it is not always the case.


#36212 - 04/01/04 05:34 PM Re: Fluorescent ballist  
SteveMc  Offline
Member
Joined: Feb 2004
Posts: 62
Rock Hill, SC
Quote:
Be sure you use the proper lamps as shown on the ballast. Many times I have found T8 lamps on T12 electronic ballasts.

Watthead, you are correct, it's always best to check the ballast, but T12 lamps on an electronic ballast are rare.



Member Spotlight
akmaster
akmaster
alaska
Posts: 70
Joined: June 2012
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 14 (0.002s) Memory: 0.7843 MB (Peak: 0.9386 MB) Zlib enabled. Server Time: 2017-04-29 19:33:51 UTC