Another Section 210.63(B)(2) question (2020 NEC)

Grouch said:
I'm looking at Post #17 in the following thread: https://forums.mikeholt.com/threads/2023-nec-section-210-63-b-2.2584424/

"Under the 2020 wording which specifically uses the words branch circuit the receptacle can be fed from the panel."

How does the wording allow the receptacle to be fed from the same panel?
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I think that interpretation basically takes advantage of a mistake in the 2020 NEC wording. A panel is generally supplied by a feeder, in which case there is no branch circuit disconnecting means for a panel, so the restriction is null.

Cheers, Wayne
 
wwhitney said:
I think that interpretation basically takes advantage of a mistake in the 2020 NEC wording. A panel is generally supplied by a feeder, in which case there is no branch circuit disconnecting means for a panel, so the restriction is null.

Cheers, Wayne
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Sooo... if it's a mistake in the wording, am I allowed to power the receptacle from the same panel? :). I'm following the 2020 NEC.
 
tortuga said:
Ask for special permission 90.4(C) to use the 2026 version of 210.63(B).
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Which reads:

"Within other than dwelling units, a receptacle outlet shall be required for wiring systems that include a solidly grounded system operating at less than 150 volts to ground. The receptacle outlet shall be located within the same room or area as indoor switchboards, switchgear, panelboards, motor control centers, and service equipment."

Cheers, Wayne
 
Grouch said:
I'm looking at Post #17 in the following thread: https://forums.mikeholt.com/threads/2023-nec-section-210-63-b-2.2584424/

"Under the 2020 wording which specifically uses the words branch circuit the receptacle can be fed from the panel."

How does the wording allow the receptacle to be fed from the same panel?
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I do not see the wording you mentioned.

I do see requirement that the required receptacle shall not be on the load side of the equipments branch circuit disconnecting means.

The change I see from what it said in 2017 and many editions prior was that it used to say it couldn't be on the load side of the equipment disconnecting means. Often it seldom could be on the same circuit as the equipment though unless the equipment happened to only require a 15 or 20 amp branch circuit as you would have other code problems with overcurrent protection to deal with,
 
2017 NEC 210.63: title is "Heating, Air-Conditioning, and Refrigeration Equipment Outlet." No requirement for service receptacles at panelboards and the like.

2020 NEC 210.63: title is "Equipment Requiring Servicing". Subsection (B) is added for "Other Electrical Equipment" and references (B)(1) "Indoor Service Equipment" and (B)(2) "switchboards, switchgear, panelboards, and motor control centers" per the reference to 110.26(E). (B)(2) says "the required receptacle outlet . . . shall not be connected to the load side of the equipment's branch-circuit disconnecting means." Which is confusing as "switchboards, switchgear, panelboards, and motor control centers" are generally not supplied by branch circuits.

2023 NEC 210.63: only change I see is the deletion of "branch-circuit" in the last sentence, which now reads ". . . shall not be connected to the load side of the equipment's disconnecting means."

2026 NEC 210.63(B) is changed to just read "Within other than dwelling units, a receptacle outlet shall be required for wiring systems that include a solidly grounded system operating at less than 150 volts to ground. The receptacle outlet shall be located within the same room or area as indoor switchboards, switchgear, panelboards, motor control centers, and service equipment." So under the 2026 NEC, at most one receptacle is required per wiring system.

Cheers, Wayne
 
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For the 2023 NEC, it's not clear to me what counts as the "equipment's disconnecting means" for panelboards and the like. Does a main breaker in a panelboard count, or do you need something that disconnects power to the conductors entering the panelboard? Article 408 is silent on disconnecting means, so I think the NEC does not provide an unambiguous answer.

Anyway, if you want to comply with 2023 NEC 210.63(B) and only run one feeder to a distant interior panelboard, you'd need to do a feeder tap to a separately enclosed OCPD for the service receptacle. [Note that an enclosure with a single OCPD in it is not a panelboard, so that OCPD for the receptacle does not itself trigger 210.63(B).] And then the panelboard would either need a main breaker, or if that doesn't count as a disconnecting means, a separate disconnect after the feeder tap before the panelboard.

Cheers, Wayne
 
Grouch said:
Sooo... if it's a mistake in the wording, am I allowed to power the receptacle from the same panel? :). I'm following the 2020 NEC.
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I would say no, the intent matches the 2023 NEC's wording. But that's something you'd have to hash out with your AHJ.

Cheers, Wayne
 
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