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Thread: Number of recepts on a 20A branch circuit

  1. #21
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    Quote Originally Posted by LarryFine View Post
    Notice that the rule in question specifies "receptacle outlets" and not "receptacles."
    Exactly. I specifically asked about "outlets" and get told about "receptacles." I thought the question was clear by the context of the thread as well.

    We've recently had a thread where everyone says a duplex receptacle counts as two outlets. For example, that a single 15A duplex is okay on a 20A dedicated branch ckt. And this thread shows where the NEC is saying a single duplex is one outlet, which would mean that's not okay.

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    Quote Originally Posted by MAC702 View Post
    Exactly. I specifically asked about "outlets" and get told about "receptacles." I thought the question was clear by the context of the thread as well.

    We've recently had a thread where everyone says a duplex receptacle counts as two outlets. For example, that a single 15A duplex is okay on a 20A dedicated branch ckt. And this thread shows where the NEC is saying a single duplex is one outlet, which would mean that's not okay.
    Did you read 220.14(I)? This is about load calculations only. Its about the load for each yoke not each receptacle.

    (I) Receptacle Outlets. Except as covered in 220.14(J) and
    (K), receptacle outlets shall be calculated at not less than
    180 volt-amperes for each single or for each multiple receptacle
    on one yoke. A single piece of equipment consisting of a
    multiple receptacle comprised of four or more receptacles
    shall be calculated at not less than 90 volt-amperes per receptacle.
    This provision shall not be applicable to the receptacle
    outlets specified in 210.11(C)(1) and (C)(2).
    Curt Swartz
    Electrical Contractor

  3. #23
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    So is the Exhibit from the OP incorrect as it shows more than 10 or 13 ( respectfully)

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    Quote Originally Posted by Sierrasparky View Post
    So is the Exhibit from the OP incorrect as it shows more than 10 or 13 ( respectfully)
    Exactly. Does the definition of "outlet" change depending on the code section?

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    Quote Originally Posted by Sierrasparky View Post
    So is the Exhibit from the OP incorrect as it shows more than 10 or 13 ( respectfully)
    The Exhibit I see in the OP shows 10 devices (yokes) on a 15 and 13 on the 20.
    220.14(I) doesn't state 180va per individual receptacle. It states 180va per yoke. This doesn't meant that each yoke can only be considered 1 receptacle.
    Curt Swartz
    Electrical Contractor

  6. #26
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    Quote Originally Posted by MAC702 View Post
    We've recently had a thread where everyone says a duplex receptacle counts as two outlets. For example, that a single 15A duplex is okay on a 20A dedicated branch ckt.
    How's that? 210.21(B)(1) refers to a "single receptacle" while 210.21(B)(2) refers to a branch circuit supplying "two or more receptacles or outlets". So there is no ambiguity there for the case of only one 15A duplex receptacle on a 20A dedicated branch circuit: it is two receptacles at one outlet, 210.21(B)(1) does not apply, and 210.21(B)(2) does apply.

    Cheers, Wayne

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    Quote Originally Posted by wwhitney View Post
    ... it is two receptacles at one outlet, ...
    I must have misremembered how it was explained in the other thread. Thanks.

  8. #28
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    Quote Originally Posted by MAC702 View Post
    We've recently had a thread where everyone says a duplex receptacle counts as two outlets. For example, that a single 15A duplex is okay on a 20A dedicated branch ckt. And this thread shows where the NEC is saying a single duplex is one outlet, which would mean that's not okay.
    No, a duplex receptacle is two receptacles, but one outlet. A 15a duplex receptacle is allowed on a 20a circuit, but a single 15a receptacle is not.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  9. #29
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    I'll take this one step further:
    Quote Originally Posted by LarryFine View Post
    No, a duplex receptacle is two receptacles, but one outlet.
    A pair of duplexes in a 4x4 box is four receptacles, but still one outlet.

    Charles E. Beck, P.E., Seattle
    Comments based on 2017 NEC unless otherwise noted.

  10. #30
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    Quote Originally Posted by charlie b View Post
    I'll take this one step further: A pair of duplexes in a 4x4 box is four receptacles, but still one outlet.
    And two yokes?
    Without data you’re just another person with an opinion – Edwards Deming

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