dominus_aranearum t1_itm4stj wrote
Rather than just setting the included j-box on the plywood, secure it to the top of the plywood.
How are you planning to run your Romex? Drilling through the webbing of your TJIs? Stapling Romex to the bottom of joists is only code compliant (at least in the US) if there is backing, meaning you can go along one joist, but can't go from joist to joist to joist.
334.15 Exposed Work.
(C) In Unfinished Basements and Crawl Spaces. Where cable is run at angles with joists in unfinished basements and crawl spaces, it shall be permissible to secure cables not smaller than two 6 AWG or three 8 AWG conductors directly to the lower edges of the joists. Smaller cables shall be run either through bored holes in joists or on running boards. Nonmetallic-sheathed cable installed on the wall of an unfinished basement shall be permitted to be installed in a listed conduit or tubing or shall be protected in accordance with 300.4.
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).
dominus_aranearum t1_itmcgkd wrote
I'll assume your "potlights" are ultra-slim LED can lights?
An LED driver is the power supply that outputs the necessary power for the LEDs. The j-box would be the metal box where the electrical connection is made.
The webbing on a TJI is the OSB between the upper and lower chords. Just be sure to follow proper spacing and sizing when drilling through the joists.
big_sugi t1_itmgtaf wrote
I was thinking these are cannabis grow lights
dominus_aranearum t1_itmnl5b wrote
Possible but that would be really unwise given that it's an unfinished basement and being able to adjust humidity properly throughout the grow process would be a nightmare.
big_sugi t1_itmnsxn wrote
Probably true; I don’t know much about the logistics of a grow operation.
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.
dominus_aranearum t1_itmtgto wrote
Do you have a link for the lights you're using?
otaknap OP t1_itn32o5 wrote
I haven't purchased them yet but I'm thinking about something like this:
dominus_aranearum t1_itn3sff wrote
The metal box is the j-box/driver in this case. Use stress relief on your romex and attach it to the plywood.
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