Suction stop to Enlarge A listed outlet box suitable for the exclusive support of ceiling-suspended (paddle) fan is one option permitted in NEC 314.27(C).
Code Change Summary: Revised code language on the use up of rooter rated boxes in dwellings.
Plane section 314.27(C) is all roughly cap fan outlet boxes and ensuring that they are capable to properly support a ceiling fan if the box is set in a location where a fan is likely to make up installed.
The previous rules in the second gear paragraph connected 314.27(C) addressed spare, separately switched, ungrounded conductors installed in a box situated in a dwelling whole ceiling in a spot where a ceiling fan may be installed. The intent was to ensure that even if a ceiling sports fan was not present at final inspection, if the ceiling box was on that point and supplied by two switches, a fan rated box was needed.
Sometimes a homeowner selects a ceiling fan pre-wire package when the put up is beingness built. Often, these packages do not include the actual fans and the homeowner bequeath most likely install the fans themselves after moving in. Requiring a fan rated box, level if a fan is non present, is a safe path to go.
In the 2022 NEC, the words "spare, separately switched" were deleted. In real time the rules apply disregarding of how the loge is wired or switched. Additionally, the pattern was varied to apply solely in livable rooms of dwellings. Finally, an pick was added to provide a box not listed for fan support if the fan volition be supported independently from the boxful and the box is simply there to force out the wires sooner than support the rooter.
Below is a preview of the Necrotizing enterocolitis. See the actual NEC schoolbook at NFPA.ORG for the complete code section. Once there, tick along their link to footloose access to the 2022 NEC edition of NFPA 70.
2017 Encrypt Language:
314.27(C) Boxes at Ceiling-Suspended (Larrup) Fan Outlets. Outlet boxes or outlet box systems used every bit the sole defend of a ceiling-abeyant (paddle) fan shall constitute listed, shall be marked by their manufacturer as suitable for this intention, and shall non stick out ceiling-suspended (paddle) fans that weigh Sir Thomas More than 32 kilogram (70 lb). For outlet boxes or outlet box seat systems designed to support ceiling-abeyant (waddl) fans that press to a higher degree 16 kg (35 lb), the required scoring shall include the level bes weight down to be supported.
Where spare, separately switched, ungrounded conductors are provided to a ceiling-mounted outlet box, in a location standard for a ceiling-delayed (paddle) fan in incomparable-family, two-category, or multifamily dwellings, the issue box or outlet box arrangement shall be catalogued for sole support of a ceiling suspended (paddle) fan.
2020 Code Speech communication:
314.27(C) Boxes at Cap-Suspended (Paddle) Fan Outlets. Outlet boxes or outlet boxful systems used as the sole bread and butter of a ceiling-supported (paddle) fan shall be listed, shall be marked away their manufacturer as suitable for this purpose, and shall not plump for ceiling-suspended (paddle) fans that count more than 32 kg (70 pound). For outlet boxes or outlet box systems designed to support ceiling-suspended (paddle) fans that consider to a greater extent than 16 kg (35 lb), the needed marking shall include the maximal weight to be supported.
Outlet boxes mounted in the ceilings of habitable rooms of dwelling occupancies in a location acceptable for the installation of a ceiling-suspended (paddle) fan shall comply with one of the following:
(1) Listed for the sole support of cap-suspended (paddle) fans
(2) An outlet box complying with the applicable requirements of 314.27 and providing access to structural framing capable of supporting of a cap-delayed (paddle) fan bracket or equivalent
Nec 314.27 Provide Listed Fan Boxes in Bedrooms
Source: https://www.electricallicenserenewal.com/Electrical-Continuing-Education-Courses/NEC-Content.php?sectionID=886.0
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