ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
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
Dimmable LED 2x4 lay in fixtures
by HotLine1. 04/24/17 05:43 PM
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,854 Are you busy
169,644 Re: Forum
162,889 Need opinion
Who's Online Now
0 registered members (), 49 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#28926 - 09/04/03 02:59 PM Ballast training  
Tom  Offline
Joined: Jan 2001
Posts: 1,044
Shinnston, WV USA
Seeing the other post about AC/MC training reminded me of the site listed below. You'll pick up a few nuggets.

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

Work Gear for Electricians and the Trades

#28927 - 09/04/03 05:54 PM Re: Ballast training  
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
I spoke to a very knowledgeable support person at Advance Ballast about a little “pill-bottle” tester that I thought they gad offered for testing filament voltage at two-pin tombstone sockets. She said Advance prefers using true-RMS voltmeters, but that she knew that Universal {their competitor!} had offered some testers, and suggested calling them. describes a bi-pin-base tester for 30- and 40-watt-rapid start fixtures and a recessed-double-contact base version for 800/1500ma fluorescent fixtures. The HO model was called a “CT-8” but they have discontinued selling both in the last six months, according to an experienced phone-support guy there.

If I had to work on many rabid-start or HO ballasts, I would probably make up some test bases from discarded tubes with extension leads for a meter. {Acceptable filament voltages are listed in pdf troubleshooting guides.} Both companies’ support folks warned that the flashlight-lamp test procedure was OK for linear and electronic ballasts, but to be sure and use a true-RMS meter on high-frequency electronic ballasts for accurate results.

Both reps motioned that a good reading of filament voltage at both tombstones {or four for two-lamp ballasts} did not automatically mean that the fixture should work OK, but implied that if you didn't measure good filament voltages, there is no point in troubleshooting further.

[This message has been edited by Bjarney (edited 09-04-2003).]

Member Spotlight
Posts: 3,439
Joined: October 2000
Show All Member Profiles 

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.011s Queries: 14 (0.002s) Memory: 0.7446 MB (Peak: 0.8599 MB) Zlib enabled. Server Time: 2017-04-28 06:25:56 UTC