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? on rewiring lamp. J.Lef 01-19-2008
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Posted by Dave Martindale on January 21, 2008, 3:55 pm
>>> As always, you guys are the best. You are right and the
>>> fault is on our end.
> For some reason, it seems that the 3 way bulbs got a bit loosened. They
>were turning on and off, but not three way.

The construction of 3-way bulbs and sockets is that you *always* get
contact on one of the base contacts before the other. So you get
one-way operation first, then 3-way after you screw the bulb in far
enough to make the second connection. But with a bulb and socket that
are properly set up, it shouldn't take much rotation (or much force) to
go from 1-way to 3-way operation. So it's possible that one of the
contact fingers in your socket is too far from its normal height (e.g.
one may need bending up so it contacts earlier).

        Dave

Posted by Ryan Weihl on January 19, 2008, 9:51 pm
J.Lef wrote:

> Hello to all.
> As another weekend project came to mind, the better half and I
> decided to rewire two lamps we love(circa 1970,s). Plus patch the
> pottery on them. They are standard type(They look like grecian
> urns-and made of pottery). They were originally 3 way, but
> rewired about ten years ago to one way. We decided we now
> need the 3 way back. So we purchsed the sockets and wire, and
> rewired, pretty simple, and works great as 3 way. (50,100,150) We
> then decided we wanted to have an on and off switch on the wire at
> base of lamp, so we dont have to reach under shade to turn on and
> off. Hopefully some switch that can do 3 way. So we
> puchased a switch, that would do on and off, but when connected to
> wiring, it did its job, but we lose the 3 way. Its just a one way.
> Can anyone advise, on a type of wiring switch, that can be used to
> adjust 3 way, plus on and off, or at least keep the 3 way function,
> and work as and on and off. Hope I didnt confuse anyone. :)
>
> Thanks and much regards

well... as far as I know the three-way function is an internal setup
of the socket, never heard of a socket where you do it external
to the socket. rw

--


Posted by Edwin Pawlowski on January 19, 2008, 9:53 pm

> Hopefully some switch that can do 3 way.
> So we puchased a switch, that would do on and off, but when
> connected to wiring, it did its job, but we lose the 3 way. Its just a one
> way.
> Can anyone advise, on a type of wiring switch, that can be used to
> adjust 3 way, plus on and off, or at least keep the 3 way function, and
> work as and on and off.
> Hope I didnt confuse anyone. :)

The three way function takes place at the socket. Base and line switches
just break the current at one wire to turn them off and on. I don't know of
any switches that will do what you want. Of course, using a line switch you
can turn it off and on so as long as the last setting is what you want,
there is no reaching under the shade.

You may find a dimmer switch that will give you variable lighting with a
150W bulb.



Posted by J.Lef on January 19, 2008, 10:41 pm

three way function takes place at the socket. Base and line switches
> just break the current at one wire to turn them off and on. I don't know
> of any switches that will do what you want. Of course, using a line
> switch you can turn it off and on so as long as the last setting is what
> you want, there is no reaching under the shade.

Thanks Edwin. I understand what you are saying, but
when I install a line switch, which turns it on and off, I am losing the 3
way options on the the lamp socket as well. Before installing line switch,
I had 3 way. After installing line switch, I only have on and off, no matter
if I try the lamp socket, or line switch.
Can you figure whats going wrong, or are there certain
line switches for three way bulbs?
Thanks
>


Posted by Terry on January 19, 2008, 10:55 pm

>
>three way function takes place at the socket. Base and line switches
>> just break the current at one wire to turn them off and on. I don't know
>> of any switches that will do what you want. Of course, using a line
>> switch you can turn it off and on so as long as the last setting is what
>> you want, there is no reaching under the shade.
>
> Thanks Edwin. I understand what you are saying, but
>when I install a line switch, which turns it on and off, I am losing the 3
>way options on the the lamp socket as well. Before installing line switch,
>I had 3 way. After installing line switch, I only have on and off, no matter
>if I try the lamp socket, or line switch.
> Can you figure whats going wrong, or are there certain
>line switches for three way bulbs?
> Thanks
>>

It can't behave as you say.

Look at this drawing.
http://www.juddley.com/3_way_lamp_logic.htm

The inline switch you put in breaks the black wire only. Nothing you
do can change the arrangement in the lamp.


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