Box Fill Question, Is Fan Canopy Included? - Electrical - DIY Chatroom Home Improvement Forum

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Old 11-01-2012, 01:49 PM   #1
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Box fill question, is fan canopy included?

I have participated in several threads lately that discussed box fill capacity. The question rises about using a 6 cu in pancake box to mount a fan. 6 cu in is only enough by code for a single 14-2 cable. When in fact when mounting a ceiling fan the connections end up in the canopy rather than in the box.

Is it code compliant to include the capacity of the fan for box fill? I have never seen 1 that has the cu in listed on it. The same question can be asked about mounting a wall sconce with a canopy to a pancake box.


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Old 11-01-2012, 03:49 PM   #2
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314.16(A) Box Volume Calculations. The volume of a wiring
enclosure (box) shall be the total volume of the assembled
sections and, where used, the space provided by plaster
rings, domed covers, extension rings, and so forth, that are
marked with their volume or are made from boxes the dimensions
of which are listed in Table 314.16(A).

314.16(B)(1)Exception: An equipment grounding conductor or conductors
or not over four fixture wires smaller than 14 AWG, or
both, shall be permitted to be omitted from the calculations
where they enter a box from a domed luminaire or similar
canopy and terminate within that box.


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Old 11-01-2012, 10:13 PM   #3
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Just write the volume inside the canopy with a sharpie.
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