1/2 controlled recept

[Toros]

hi
Why do they call it 1/2 controlled receptacle

most electritions here dedicated one full receptacles contolled by occupancy sesors in that room
and install them within 6 feet of regular receptacle.

Tanx

 

[jumper]

hi
Why do they call it 1/2 controlled receptacle

Common slang term used for a duplex receptacle in which only one of the two, 1/2, receptacles on the device is switched.

 

[Ponchik]

I say it is a design thing. 1/2 switched or full switched.

 

[JoeStillman]

I found this web page about ASHRAE 90.1-2010;

Beyond the power that supports the energy-consuming building systems, ASHRAE 90.1-2010 targets the local receptacle, attempting to reduce the ever-growing “vampire” plug loads, both during downtime and after hours....Fifty percent of 120-V outlets that serve private offices, open offices, and computer classrooms must be provided with automatic receptacle control.

This energy code isn't adopted everywhere (yet), but I'm not surprised to hear it stomping around in CA.

 

[Dennis Alwon]

I say it is a design thing. 1/2 switched or full switched.

Ifr you switch the entire receptacle then it does not count as the required outlet so in order to not have another outlet we switch half the receptacle while the other half stays hot.

 

[mopowr steve]

Ifr you switch the entire receptacle then it does not count as the required outlet so in order to not have another outlet we switch half the receptacle while the other half stays hot.

Good call

 

[dannyboy]

ASHRAE 90.1 2013

ASHRAE 90.1 2013

2013 now requires half the receptacles in offices, open offices, break rooms, conference rooms, etc. similar spaces. It does not refer to the required receptacles. This is a Contractor "out card" for not putting in extra locations. The cost of the larger box and cover needs to be compared to the labor of making sure the receptacle is properly split, separately wired, and the special labeling was done correctly. I find it as a wash in cost but a hardship on the user. Most engineered specifications already ask for the larger box. Skipping the "mud ring" and using a larger cover are about the same. I see the issue as being wasted work. Once people realize the receptacles cannot be used for the computer, cell phone charger, telephone, coffee maker, vending machine, or similar load, the switched portions are not used.

 

[tkb]

2013 now requires half the receptacles in offices, open offices, break rooms, conference rooms, etc. similar spaces. It does not refer to the required receptacles. This is a Contractor "out card" for not putting in extra locations. The cost of the larger box and cover needs to be compared to the labor of making sure the receptacle is properly split, separately wired, and the special labeling was done correctly. I find it as a wash in cost but a hardship on the user. Most engineered specifications already ask for the larger box. Skipping the "mud ring" and using a larger cover are about the same. I see the issue as being wasted work. Once people realize the receptacles cannot be used for the computer, cell phone charger, telephone, coffee maker, vending machine, or similar load, the switched portions are not used.

Which required receptacles are you talking about?
i don't think there are any required except in dwelling units.

 

[Sierrasparky]

Ifr you switch the entire receptacle then it does not count as the required outlet so in order to not have another outlet we switch half the receptacle while the other half stays hot.

I think that is for residential and Toros is speaking of commercial energy code.