otaknap

otaknap OP t1_itnreid wrote

Yes they do sell this. It's typically installed at the bottom of the joist and helps the drywaller locate the rough-in. Although I'm sure it'll support the weight of the fixture and driver, I'm slightly worried. I also feel it looks cleaner if the entire thing was in the cavity of the joists. Plus, I have extra wood available.

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otaknap OP t1_itmroo4 wrote

thanks for the info! i'm assuming for the slim style LED drivers, a junction box or jbox isn't needed. so I'm assuming you were using the two terms interchangeably? Normally, I would ground the 14/2 wire on the junction box but given that there is no junction box and just the driver, I assumed that grounding the junction box within is adequate and I can simply just place or screw the driver on the plywood.

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otaknap OP t1_itma96k wrote

I was planning on securing the drivers (same as j-box?) on the the plywood but not planning on securing the plywood on the joist if the fit is tight.

Sorry for my lack of knowledge but what is the "webbing of your TJIs"? Not quite sure I understand. I was planning on just running the down the same joist and if i have to go to a parallel joist, drill through the osb in the middle of the joist or perhaps use one of the existing holes (if it already exists).

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otaknap OP t1_itm2cxj wrote

my joist has a 2x3 on the bottom of it which gives it a lip for a piece of plywood to sit on top. If the plywood fits very snug, I am thinking that it might not be necessary to screw it in. That way (without enough 14-2 slack), I can move the light a little bit if it needs adjustment. Also easier to remove if I ever decide to finish the basement. I will definitely screw it into the joist if it's not snug.

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otaknap OP t1_itlrmbd wrote

Thanks so much for your reply!

I was definitely going to anchor the junction box but I wasn't going to anchor the plywood. Depending on the circumstance and how tightly I can get the plywood to fit, I might have to. I wasn't planning on getting an inspection as I'm pulling the line from an existing circuit light and won't be touching the panel.

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