ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Fujifilm Recalls Power Adapter Wall Plugs
by Admin. 01/16/18 07:04 PM
VDE 0100 to introduce AFCIs
by sparky. 01/16/18 06:36 PM
Air Compressor feeder conductor sizing
by Potseal. 01/15/18 09:08 PM
Under carpet cable?
by HotLine1. 01/15/18 09:57 AM
New in the Gallery:
Housebilding DIY wiring
SE cable question
Who's Online Now
0 registered members (), 7 guests, and 8 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
dimming switches #21024
01/25/03 11:05 PM
01/25/03 11:05 PM
R
rj  Offline OP
Member
Joined: Jan 2003
Posts: 21
Skidmore, Missouri, USA
I have been told that an incandescent dimmer switch will not dim a fluorescent light.
We had a service call that the lights would come on but they would not dim. Upon taking the switch out it was an incandescent dimmer. There were 2 other dimmer switches beside this one. They were both incandescent dimmers and they were all dimming t8 lamps.
I was wondering if anyone has ever found incandescent dimmers, dimming fluorescent lights?

Work Gear for Electricians and the Trades
Re: dimming switches #21025
01/25/03 11:10 PM
01/25/03 11:10 PM
waymag  Offline
Member
Joined: Jan 2002
Posts: 67
dallas, texas, USA
I could be wrong but I believe the flourescents need to have dimming ballasts and a regular dimmer switch will work with these. That may have been the case where you were.

Re: dimming switches #21026
01/25/03 11:15 PM
01/25/03 11:15 PM
I
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Yes, and I had to eat my words to a customer after putting down someone else's work.
The ones I ran into had Electronic ballasts made Energy Savings Inc. They were running 26 watt PL lamps.

In small print on the Ballast it said it was dimming ballast, in the past the only dimming ballasts I had worked with needed 3 wires from switch to ballast, and this just had 2

I too found these on a service call, they said for couple of days the lights where blinking then same as you descibe they would turn on and off but not dim

I do not know what the fix was, the customer went back to the installer as it was new work.


[This message has been edited by iwire (edited 01-25-2003).]


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Re: dimming switches #21027
01/25/03 11:21 PM
01/25/03 11:21 PM
C
caselec  Offline
Member
Joined: Apr 2002
Posts: 558
San Jose, CA
Fluorescent lamps need a dimming ballast and fluorescent dimmers designed to work with the ballast. I have never seen any dimming ballasts designed to work with incandesent dimmers.

Curt


Curt Swartz
Re: dimming switches #21028
01/25/03 11:27 PM
01/25/03 11:27 PM
waymag  Offline
Member
Joined: Jan 2002
Posts: 67
dallas, texas, USA
Thanks Curt I was pretty sure i was wrong. You don't see this very often.

Re: dimming switches #21029
01/26/03 09:42 PM
01/26/03 09:42 PM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
All incandescent dimmers I have seen state that they are to be used on permanently installed incandescent lighting only.


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
electure
electure
Fullerton, CA USA
Posts: 4,263
Joined: December 2000
Show All Member Profiles 
Top Posters(30 Days)
sparky 23
Admin 20
Potseal 13
Popular Topics(Views)
243,516 Are you busy
180,314 Re: Forum
170,811 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.015s Queries: 14 (0.003s) Memory: 0.9745 MB (Peak: 1.1206 MB) Zlib enabled. Server Time: 2018-01-17 13:16:21 UTC