Will this electrical box support a ceiling fan?
6 years ago
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Comments (10)
- 6 years agolast modified: 6 years ago
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Junction box for ceiling fan vs hanging fixture
Comments (6)patty cakes Home Depot sells a junction box designed for ceiling fans. It has a metal L bracket that is riveted into thew top of the box and has 4 to 5 holes to screw the box to the side of the ceiling joists. The L bracket also has spikes that dig into the wood to provide extra strength. I would recommend using these boxes for ceiling fans or moderately heavy fixtures. Most fans weigh close to or more than 25 pounds. However, when they spin they put a lot more stress on the box holding it than the dead weight of the fixture. Regular j boxes for light weight ceiling fixtures have 2 nails holding them into the side of the joists - and these nails stick into the joist by maybe 1 inch or so. It is dangerous to hang a heavy fixture - or fan - on one of these boxes with just 2 nails holding them in place.. For heavy ceiling fixtures, they also make a special box that has 2 bolts the attach from the bottom of the box up into the joists. This type of box should be used for fixtures that weigh up to 80 pounds. They make other boxes with brackets that bolt between joists four very heavy chandeliers that weigh more than 80 pounds if you have any of these. iIt is true that electricians will typically install standard j boxes unless you spec otherwise. I would make sure that your electrician uses the proper rated box for the weight loads you are planning. The special boxes are inexpensive and worth the peace of mind that the fixtures won't fall out of the ceiling....See Moreceiling fan box capacity
Comments (10)The problem is not the box but how it is mounted. Looking at HD, that box is only rated for a 35lb fan. You need something stronger. There are a couple of ways to do this, depending on whether your ceiling is open to the joists, or accessible from above, or not. If open, you can use a 2x4 nailed in between the joists. The box then will be attached to the underside, so leave enough clearance for the box and sheetrock. If closed, then there is a device out there that I've used several times. It is a steel rod-like thing that expands. The ends have spikes that, when expanded, drive into the joists to hold it. It screws together and fits up into the ceiling through the hole for the box. Once up there, you 'unscrew' it which lengthens it until it firmly grips the joists. You then attach a metal box to it with the hardware provided (U-clamp and aircraft nuts). Here is a link that might be useful: HD westinghouse fan box...See MoreWhere can I move electrical boxes to allow for ceiling panel space?
Comments (7)The job looks like amateur hour to begin with. The pictures show a number of things that were NEVER legal under the electrical code, notwithstanding the general failure to execute things in a workmanlike manner. It's a loss as to why the haphazard installation was done to begin with. It shouldn't be hard to just move them up out of the way. The issue becomes one of accessibility. If by "celing tiles" you're talking things that are easily removed (your typical grid ceiling), that's all that's required. You do need to make sure the relocated cables are properly secured (they aren't now) and they can't rest at all on the ceiling system. If you're putting up a non-removeable set of ceiling tiles, you're going to have to remove the boxes or make them accessible. The plugs and cords are going to be problematic (as others pointed out you can potentially hardwire those shoplights if you intend to keep them, or just get rid of them). The remaining junction boxes could be mounted on the ceiling itself with blank covers....See MoreWill this ceiling electrical box support a fan?
Comments (8)"If the box isnt marked for supporting a fan, it isn't legal to support a fan." "Are you positive that it's mounted directly to a joist?" No, further examination shows that the electrical box is attached to something metal, perhaps a brace as you suggest. I'm going to remove the box and look inside the ceiling. If the brace is installed properly, I understand from a Q&A posted elsewhere that I can get a fan-compliant box and attach it to the existing brace (properly, not just with a big lug like the current box). The fan I'm considering weighs 17 lbs....See More- 6 years agolast modified: 6 years ago
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