ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
An impossible Support Violation
by gfretwell - 09/12/23 04:29 PM
How are you Jersey folks about the windmills?
by gfretwell - 09/08/23 02:21 PM
Having trouble logging in?
by Admin - 09/01/23 10:26 AM
New TikTok Challenge Posing Serious Risks
by iTacos - 08/28/23 10:04 AM
Mis-applying Codes
by gfretwell - 08/25/23 05:31 PM
New in the Gallery:
Few pics I found
Few pics I found
by timmp, August 15
Get Back to work, Keep Using it.
Get Back to work, Keep Using it.
by timmp, August 15
Who's Online Now
1 members (Scott35), 16 guests, and 13 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#36206 04/01/04 12:34 AM
Joined: Aug 2001
Posts: 545
A
aldav53 Offline OP
Member
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"
#36207 04/01/04 01:29 AM
Joined: Jun 2003
Posts: 1,143
D
Member
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
Joined: Feb 2004
Posts: 62
S
Member
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
Joined: Dec 2000
Posts: 4,293
Member
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
Joined: Aug 2001
Posts: 545
A
aldav53 Offline OP
Member
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
Joined: Oct 2001
Posts: 172
W
Member
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
Joined: Feb 2004
Posts: 62
S
Member
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.


Link Copied to Clipboard
Featured:

Tools for Electricians
Tools for Electricians
 

* * * * * * *
2023 National Electrical Code (NEC)
2023 NEC + Exam Prep Study Guides Now Available!
 
* * * * * * *

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

 

Member Spotlight
CharlieE
CharlieE
Indianapolis
Posts: 201
Joined: April 2004
Top Posters(30 Days)
Popular Topics(Views)
311,074 Are you busy
237,472 Re: Forum
221,260 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.7.5