Dimming Duplex Receptacles

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Re: Dimming Duplex Receptacles

Well if receptacles in a theatre are not permitted to be dimmed by a dimmer rack. Then practically every big theatre with a permanently installed dimming system is not to code. Theatre lighting, usually cannot be permanently installed and is cord connected, usually with an Edison type, twist-lock, or stage-pin cord cap. It would be silly to permanently connect stage lighting, because it is constantly beeing moved? My question here is, is 404.14(e) being taken out of context? I think that article 520 should be expanded to cover the connecting means of fixtures to dimmers in a theatre.
 
Re: Dimming Duplex Receptacles

We wire all ceiling fans in 3 wire and all rooms usually have a switched recep unless there is a plan change.so the chance of hooking up a dimmer to to 3rd wire light leg is well 50/50.Standard is switched recep on side of the door as you look at it then c/f next.Anything like that should be caught on a hot check.Unless you have builders like we do that push scheduling to an extreme and get cultured marble tops that have back splash receps and call a final same day as install and meter is released the same day as closing.Do this on a Thurs and closing is fri and move in on saturday,no punch out ;)
 
Re: Dimming Duplex Receptacles

Never let the homeowner find your faults,and if possible hide them from contractor too.Always tried to do hot checks when nobody is around so they get fixed and we look like we did perfect work.
 
Re: Dimming Duplex Receptacles

Allen, I lay out my C/F switches with switched outlets the same, unless I know the C/F is an extra and that a light will be trimmed out using the "light" leg of the C/F prewire.

I then assume they will use the overhead more than a lamp, so the half-hot moves to the farthest switch from the door. :)

Edit to add: Hit the return key now and then, for cryin' out loud! :D

[ March 08, 2005, 07:27 AM: Message edited by: georgestolz ]
 
Re: Dimming Duplex Receptacles

A lot ( if not all ) theatrical 120 volt fixtures are hooked up using locking receptacles. As long as the dimmer is of the heavy duty type and the receptacle is unique for dimmable loads, it is legal under 2005 NEC 404.14(E).

However, Lutron's heavy duty dimmers have to be programmed ( configured ) for different loads such as incandescent, dimmable fluorescent, series would motors, controllable permanent split capacitor and shaded pole motors, and so forth. You cannot run mixed loads on the same dimmer.
 
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