SINGLE receptacle

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domnic

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Electrical Contractor
IN a household where and when must i use a single receptacle. 2011 nec ???????????????????????????????????????????????????????????????????????????????????
 
Anytime you are required to provide an individual circuit to a cord and plug machine then that receptacle should be a single device. A built-in microwave requires a single receptacle in this area since the microwave calls for an individual circuit.
 
Anytime you are required to provide an individual circuit to a cord and plug machine then that receptacle should be a single device. A built-in microwave requires a single receptacle in this area since the microwave calls for an individual circuit.
CMP 2 has a published statement saying otherwise...it was in response to a proposal to require the use of a single receptacle where the code requires an individual circuit.
 
CMP 2 has a published statement saying otherwise...it was in response to a proposal to require the use of a single receptacle where the code requires an individual circuit.
It was my recollection that a single receptacle isn't actually required but is considered to be a good practice.
 
Does the amendment actually require a single receptacle?
Subsection 210.11 (C)(4) - Add a new subsection 210.11(C)(4)t oread as follows:
(4) Air-Conditioning Branch Circuit. In addition to the number of branch circuits required by other parts of this section, an individual branch circuit shall be provided for each air-conditioning receptacle
required by 210.52(1).

I was not aware of cmp2 interpretation that individual branch circuit can have a duplex receptacle.
 
(2017) NEC definition: "Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment." So you can use a duplex receptacle, and as long as you only plug in one thing, it's an individual branch circuit.

Cheers, Wayne
 
Subsection 210.11 (C)(4) - Add a new subsection 210.11(C)(4)t oread as follows:
(4) Air-Conditioning Branch Circuit. In addition to the number of branch circuits required by other parts of this section, an individual branch circuit shall be provided for each air-conditioning receptacle
required by 210.52(1).

I was not aware of cmp2 interpretation that individual branch circuit can have a duplex receptacle.
Not an interpretation ...a panel statement when they rejected a proposal that would have required the use of single receptacles for individual branch circuits.
 
(2017) NEC definition: "Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment." So you can use a duplex receptacle, and as long as you only plug in one thing, it's an individual branch circuit.

Cheers, Wayne
So it's up to the average everyday homeowners. Dad is an accountant and mom is a teacher, to know that they are not supposed to use the other receptacle. Brilliant!
 
So it's up to the average everyday homeowners. Dad is an accountant and mom is a teacher, to know that they are not supposed to use the other receptacle. Brilliant!
No different from the "no equipment ground" sticker required by 406.4(D)(2)(b). That is really a reference to 250.114 but no homeowner and few electricians know that.
 
A single receptacle is not required anywhere in a dwelling.
Only in Ohio. Still not really 'required' unless you use the exceptions.

3401.1 Electrical. The provisions of the National Electrical Code, NFPA 70, shall be incorporated herein and shall govern the installation, testing and operation of the electrical systems of one-, two- and three-family dwellings and their accessory structures except for the following: 1. Section 210.8(A)(2) shall be modified to read: Garages, and also accessory buildings that have a floor located at or below grade level not intended as habitable rooms and limited to storage areas, work areas, and areas of similar use except for the receptacle located to serve a garage door opener when the device is a single receptacle and located in the ceiling. 2. Section 210.8(A)(5) shall be modified to read: Unfinished basements – for the purposes of this section, unfinished basements are defined as portions or areas of the basement not intended as habitable rooms and limited to storage areas, work areas, and the like. Exceptions: 1. A receptacle supplying only a permanently installed fire alarm or burglar alarm system shall not be required to have ground fault circuit-interrupter protection. 2. A single receptacle located to serve a sump pump shall not be required to have ground-fault circuit-interrupter protection when there is a duplex receptacle with ground-fault circuit interrupter protection within six (6) feet of the sump pump.
 
Not an interpretation ...a panel statement when they rejected a proposal that would have required the use of single receptacles for individual branch circuits.
Don,
Any idea why they rejected this proposal? I don't see a problem with requiring a single receptacle on an individual branch circuit.
 
Any idea why they rejected this proposal? I don't see a problem with requiring a single receptacle on an individual branch circuit.
One issue is that to my understanding an individual branch circuit is allowed to have multiple receptacles in different locations, for the purpose of serving a specific mobile piece of equipment (e.g. a single welder). So the change would need to allow multiple single receptacles. Still no need for two receptacles (a duplex) in one location.

Cheers, Wayne
 
Don,
Any idea why they rejected this proposal? I don't see a problem with requiring a single receptacle on an individual branch circuit.
(2011 code proposal)

2-9 Log #2568 NEC-P02 Final Action: Reject
(100.Branch Circuit, Individual)
_______________________________________________________________
Submitter: Charles Palmieri, Palmieri Assoc.
Recommendation: Add the following text (as indicated) to the definition;
Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment, or a single receptacle.
Substantiation: Duplex receptacles are commonly installed for cord and plug connected appliances, which in many cases (by manufactures standard) require an individual branch circuit. Once the duplex receptacle is installed, the circuit becomes a multi-outlet branch circuit. I am not certain that this was the intent of the manufacturer when it required an individual branch circuit, nor was it the intent of the panel when it adopted the definition of individual branch circuit as it is now written. This issue is further exasperated when one refers to exhibit 100.7 of the 2008 Handbook. The illustration implies that only a single contact device may be installed on a individual branch circuit. If the language is modified as I have proposed, a lot of arguments may be put to rest in the field.
Panel Meeting Action: Reject
Panel Statement:
The panel does not agree that a single receptacle is required. A receptacle other than a single receptacle could be used, and other means such as configuration or arrangement of the equipment could limit the application to a single utilization equipment.
Number Eligible to Vote: 12
Ballot Results: Affirmative: 12
 
Has their ever bin a single receptacle requirement in a dwelling, in the nec ?
 
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