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Post by MattS on Apr 13, 2018 19:47:59 GMT -5
When I replaced my ceiling fan early last summer, I didn't think to check to see if the junction box was in fact a ceiling fan rated. My previous ceiling fan (Hampton Bay Carousel) shook badly on high, even on low, it shook slightly, both of our other Hampton Bays also shake on all 3 speeds, but not as bad on low. I when I decided to replace my fan, I choose a hugger for that very reason. It still shakes slightly on high, but not much. There is no attic access above my room, otherwise it would be easy to check. When my parents bought the house in 2000, they had a guy come and install ceiling fans in all of the bedrooms where there were previously light fixtures. They don't remember if the junction box was replaced or not, which suggests they weren't. I believe the house was remodeled some time in the 60's or 70's, I know ceiling fans were not common during that time period, but would a junction box from that era be able to handle a ceiling fan? Are there any markings on a junction box that indicate if they're fan rated, any other details to distinguish?
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Post by Jordan U on Apr 14, 2018 8:02:35 GMT -5
As far as I know it, all boxes designed for fans will indicate somewhere that they are suitable for fan support.. If the markings would be visible or not from below in your particular situation, that I don't know..
The fans shaking is not a function of the box, that's just a matter of the blades not being balanced..
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Post by Cole D on Apr 15, 2018 0:06:11 GMT -5
They probably aren't because most any fan in the 60s or 70s was mounted to a J-hook and not the box. But little huggers or spinners probably wouldn't put much weight on the box, so I doubt they replaced them.
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Post by Max C. on Apr 15, 2018 3:17:28 GMT -5
Matt, who was this "guy" if you don't mind me asking? Was he a licensed electrician or anybody else knowledgeable about installing fans?
Anyways, I second Jordan regarding fan-boxes being clearly marked. Its also worth noting that pretty much every UL-listed fan-box in existence will use larger 10/32 screws instead of the standard 8/32. Another thing to keep in mind is that a box is merely one method of supporting a ceiling fan. There is absolutely no problem securing the fan's bracket to the building structure (joists above the ceiling). So long as the the splices are still contained in a junction box, it could be argued that this is actually the best way to hang a fan.
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