ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 11
Recent Posts
600 KW 120/208 3 Phase Y protection
by Yooperup. 07/24/17 12:20 PM
1913 American Electrician's Handbook
by gfretwell. 07/20/17 01:08 PM
Green House wiring
by ghost307. 07/20/17 09:10 AM
Permit Snafus...AHJs and Contractors Jump in
by HotLine1. 07/18/17 08:06 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
239,330 Are you busy
174,797 Re: Forum
167,171 Need opinion
Who's Online Now
0 registered members (), 80 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#58332 - 11/05/05 11:59 PM lamp switches  
ds247  Offline
Member
Joined: May 2003
Posts: 18
California
Just curious but does anyone know why many incandescent table lamp switches click twice rather than once to turn on and off?


Work Gear for Electricians and the Trades

#58333 - 11/06/05 12:28 AM Re: lamp switches  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
ARe you thinking of three-way bulb sockets perhaps?

There are four positions: low, medium, high and off.

Of course this only works with the proper three-way bulb.

If you insert a standard bulb you will have to turn the key from its off position to the first "low" position" for which there is no contact.

The next stop would be medium and you'd get light.

The next stop is high and the bulb is still on (since medium and high use the same higher wattage filament in a three way bulb).

After that you turn the bulb off.

My guess is you're using the wrong bulb in your lamp.


#58334 - 11/06/05 10:47 AM Re: lamp switches  
DougW  Offline
Member
Joined: Jun 2003
Posts: 1,143
North Chicago, IL
+1 for the three-way socket.


#58335 - 11/06/05 11:12 AM Re: lamp switches  
ComputerWizKid  Offline
Member
Joined: Sep 2003
Posts: 119
Connecticut, USA
Is there any danger (as long as you don't go over the rated wattege posted on the socket Usually 150W) of using a regular bulb or Compact Floruscent in a 3 way socket?


Theres always enough room in the junction box.You just need a bigger hammer

#58336 - 11/06/05 11:52 AM Re: lamp switches  
Sixer  Offline
Member
Joined: Aug 2005
Posts: 265
Canada
There should be no danger of putting a normal compact fluorescent in a tri-light socket...but they do make CFL's specifically for tri-lights and dimmers. I've got a normal CFL in my tri-light and it's been there for years and hasn't given me any problems.

A regular tri-light bulb has 2 filaments, on low one filament is on, medium other filament is on, and on high both filaments are on. If you look in the socket you will see an extra "pin" between the center point of the socket and the threads that the lamp screws in to...this pin supplies power to the 2nd filament.

This link has some good info on CFL's: http://oee.nrcan.gc.ca/energystar/english/consumers/questions-answers.cfm?attr=4


Sixer

"Will it be cheaper if I drill the holes for you?"

#58337 - 11/06/05 05:56 PM Re: lamp switches  
Texas_Ranger  Offline
Member
Joined: Dec 2001
Posts: 2,399
Vienna, Austria
Funny - I just stumbled across such a "double click socket" in the middle of Europe! A friend of mine has an imported US floor lamp and mentioned the weird switch today... just ditched everything but the shade today though (the socket had a bad internal short arcing to the bottom part of the bulb screw shell (next to the black stuff that separates center and shell)... and since the thread on the lamp is US it prove impossible to replace the shot socket with a European one which has a metric thread...


#58338 - 11/07/05 02:10 PM Re: lamp switches  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
Ragnar, You could have given me a holler. I have plenty of spares knocking about. Both standard American lampholders and three-way (hi/lo) ones.



Member Spotlight
JoeKP
JoeKP
Berkley, MA
Posts: 144
Joined: March 2008
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: 0.014s Queries: 14 (0.003s) Memory: 0.7835 MB (Peak: 0.9352 MB) Zlib enabled. Server Time: 2017-07-25 18:44:36 UTC