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#98322 - 05/28/06 05:26 PM Home Automation System  
George Little  Offline
Member
Joined: Jan 2004
Posts: 1,489
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?


George Little

2017 / 2014 NEC & Related Books and Study Guides

#98323 - 05/28/06 05:37 PM Re: Home Automation System  
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
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.


Larry Fine
Fine Electric Co.
fineelectricco.com

#98324 - 05/28/06 05:38 PM Re: Home Automation System  
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
Richmond, VA
oops

[This message has been edited by Larry Fine (edited 05-28-2006).]


Larry Fine
Fine Electric Co.
fineelectricco.com

#98325 - 05/28/06 05:52 PM Re: Home Automation System  
LoneGunman  Offline
Member
Joined: Oct 2005
Posts: 141
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?


#98326 - 05/29/06 01:00 AM Re: Home Automation System  
SolarPowered  Offline
Member
Joined: Jul 2004
Posts: 625
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.


#98327 - 05/29/06 02:28 AM Re: Home Automation System  
e57  Offline
Member
Joined: May 2003
Posts: 2,876
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.


Mark Heller
"Well - I oughta....." -Jackie Gleason

#98328 - 05/29/06 02:36 PM Re: Home Automation System  
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
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).]


Larry Fine
Fine Electric Co.
fineelectricco.com

#98329 - 05/29/06 02:57 PM Re: Home Automation System  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
North Attleboro, MA USA
Quote
Okay, I'll play devil's advocate here.


Cool, someone has to. [Linked Image]

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. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts

#98330 - 05/29/06 08:29 PM Re: Home Automation System  
Larry Fine  Offline
Member
Joined: Feb 2005
Posts: 693
Richmond, VA
Remember, Bob, standard dimmers are rated at only 600 watts, and do not require OC protection at this (5a) level.


Larry Fine
Fine Electric Co.
fineelectricco.com

#98331 - 05/29/06 08:43 PM Re: Home Automation System  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
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. [Linked Image]


Bob Badger
Construction & Maintenance Electrician
Massachusetts

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