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Yehuda

12:58PM | 05/09/01
Member Since: 05/08/01
3 lifetime posts
Bvelectrical
I would like to replace the SINGLE plate wall switches for my ceiling lights (and I want to do this for a few rooms) with either a combo dimmer and timer switch ("Sabbath timer"; programmable to turn the lights on and off that replaces a standard wall switch in the same manner as a dimmer switch), or to somehow install BOTH a dimmer and the timer, in “sequence.” ("parallel"?)

One of the ceiling fixtures takes 8 bulbs, and the previous tenant had 25 watt bulbs in it.

I would like to hang small 2 small chandeliers (using 8 small “ersatz-candle” bulbs) in two other rooms, and control them all with seperate dimmers and timers.

I have never seen a combination unit, so will take any suggestions if they exist. (just looked at x-10, still sorting out the costs...)

This is a tenement rental apartment in NYC, so doing a "surface mount" (over the original single plate/receptacle box) with the two replacement switch units would be fine, as carving up the walls for an additional in-the-wall switch and receptacle box and plate might be more landlord-aggravating than it's worth.

I know the first thing is to locate and turn off the appropriate fuse/breaker for safety. (I have been told the whole apartment only carries 15-20 amps...) and I don't know the total load on the ceiling fixtures, though I imagine it can't be that high based on the above amperage of the apartment.

Any ideas appreciated. - Yehuda

rpxlpx

04:22AM | 05/10/01
Member Since: 03/13/00
1678 lifetime posts
As to parallel versus series wiring...
If dimmer and timer are in PARALLEL you could use the light through the dimmer even when the timer is "off". But when the timer is "on" you could not dim the lights.
If dimmer and timer are in SERIES, when the timer is "off" the light is off, period. And when the timer comes "on" the dimmer will still be controlling the brightness of the light.
When you finally make your purchase, the above description might help you be certain of getting what you want.

Yehuda

09:43AM | 05/10/01
Member Since: 05/08/01
3 lifetime posts
Thank you very much for that explanation! You covered an issue that I only raised in passing, but as you explained, is quite serious.

>If dimmer and timer are in SERIES, when the >timer is "off" the light is off, period. And >when the timer comes "on" the dimmer will
>still be controlling the brightness of the >light.

It sounds like wiring in series is the way to go, so as to allow me to control the brightness of the lights with the dimmer when the timer is set to have the lights on.

Aside from making a difference when I purchase the timer and dimmer, forgive my naivete, but what are the issues of wiring in series? Thanks again for your help.

Yehuda

11:14AM | 05/10/01
Member Since: 05/08/01
3 lifetime posts
>but what are the issues of wiring in series? >Thanks again for your help.

Just to clarify - I meant to ask how do I make sure that I am wiring in series as opposed to in parallel?

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