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#98322 - 05/28/06 03:26 PM Home Automation System
George Little Offline
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Registered: 01/18/04
Posts: 1488
Loc: Michigan USA
I wrote a violation last week to a contractor who had installed a duplex receptacle on a wall and it had a nub in between the two blades of the receptacle that prevented one from pluging in anything but a special cap with a recess that would straddle the nub on the receptacle. For me this does not satisfy the code for a general purpose receptacle required by 210.52 NEC. He ended up installing a duplex receptacle with half of it with the nub and half of it without the nub. He then split wired the receptacle so he could control half of it with the home automation system and the other half would serve the wall space as a general receptacle. Was I wrong?
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#98323 - 05/28/06 03:37 PM Re: Home Automation System
Larry Fine Offline
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Registered: 02/18/05
Posts: 693
Loc: Richmond, VA
George, that's a good question. Is there anything in the NEC that specifies the receptacle configuration?

I see 125v, 15- and 20-amp receptacles, but nothing that prohibits, say, a twist-lock. The nub is to reject the insertion of a non-dimmable load.
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Fine Electric Co.
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#98324 - 05/28/06 03:38 PM Re: Home Automation System
Larry Fine Offline
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Registered: 02/18/05
Posts: 693
Loc: Richmond, VA
oops

[This message has been edited by Larry Fine (edited 05-28-2006).]
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Fine Electric Co.
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#98325 - 05/28/06 03:52 PM Re: Home Automation System
LoneGunman Offline
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Registered: 10/02/05
Posts: 141
Loc: Florida
I'm not an inspector but agree with you. How can the receptacle satisfy the requirement of a general purpose receptacle when it is a special receptacle that will only take a certain cord?
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#98326 - 05/28/06 11:00 PM Re: Home Automation System
SolarPowered Offline
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Registered: 07/05/04
Posts: 625
Loc: Palo Alto, CA, USA
It seems to me that a dimmer-controlled receptacle (I'm making that leap that the receptacle is dimmer-controlled, because that is the purpose of those particular receptacles) does not meet the G.P. receptacle requirements of 210.52.
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#98327 - 05/29/06 12:28 AM Re: Home Automation System
e57 Offline
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Registered: 05/27/03
Posts: 2876
Loc: S.F.,CA USA
Funny I brought up the same thing with someone doing the exactly same about the same time. Otherwise, it doesnt cover spacing for general use.
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#98328 - 05/29/06 12:36 PM Re: Home Automation System
Larry Fine Offline
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Registered: 02/18/05
Posts: 693
Loc: Richmond, VA
Okay, I'll play devil's advocate here.

Where does the NEC specify that a required receptacle be only a straight-blade or "non-nubbed" type, or must or must not be of any particular configuration?

[This message has been edited by Larry Fine (edited 05-29-2006).]
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Fine Electric Co.
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#98329 - 05/29/06 12:57 PM Re: Home Automation System
iwire Offline
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Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
Quote:
Okay, I'll play devil's advocate here.


Cool, someone has to.

Quote:
Where does the NEC specify that a required receptacle be only a straight-blade or "non-nubbed" type, or must or must not be of any particular configuration?


It does not, but it does require we use 15 or 20 amp 125 volt receptacles.

While a locking receptacle can meet this I bet the 'special purpose' receptacle is rated less than 15 amps.

Even if the receptacle is rated 15 or 20 amps I would also bet the circuit supplying it is not.

I doubt the home automation equipment uses an 1800 watt or larger dimmer for a table lamp.
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Bob Badger
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Massachusetts
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#98330 - 05/29/06 06:29 PM Re: Home Automation System
Larry Fine Offline
Member
Registered: 02/18/05
Posts: 693
Loc: Richmond, VA
Remember, Bob, standard dimmers are rated at only 600 watts, and do not require OC protection at this (5a) level.
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Larry Fine
Fine Electric Co.
fineelectricco.com
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#98331 - 05/29/06 06:43 PM Re: Home Automation System
iwire Offline
Moderator
Registered: 01/05/03
Posts: 4391
Loc: North Attleboro, MA USA
I agree Larry but there is no requirement for 15 or 20 amp lighting outlets.

There is a requirement for a 15 or 20 amp receptacle circuit.
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Bob Badger
Construction & Maintenance Electrician
Massachusetts
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