ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
dsk 13
Admin 8
doc 3
Recent Posts
Bathroom electrical
by doc. 08/19/17 06:53 AM
electircal ageing test on IPC
by SIAME. 08/15/17 02:43 AM
electrical aging test on IPC
by gfretwell. 08/15/17 12:27 AM
"Line level" audio on Cat 5?
by gfretwell. 08/08/17 10:39 PM
Fire alarm phone lines and color coding
by gfretwell. 08/08/17 10:26 PM
New in the Gallery:
Gallery Test
Popular Topics(Views)
240,012 Are you busy
175,618 Re: Forum
167,851 Need opinion
Who's Online Now
0 registered members (), 58 guests, and 8 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: 2,400
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
togol
togol
NW In. USA
Posts: 421
Joined: September 2005
Show All Member Profiles 
Featured:

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

 

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.012s Queries: 14 (0.003s) Memory: 0.7840 MB (Peak: 0.9380 MB) Zlib enabled. Server Time: 2017-08-21 04:51:16 UTC