Attach Wires To Floor Joist

From the top and the bottom if it s a dimensional lumber joist.

Attach wires to floor joist. As with a drop ceiling individual tiles are laid into the grid and are not attached. The main difference is that the direct mount ceiling grid attaches directly to the ceiling framing by means of screws driven into the ceiling or floor joists above rather than being suspended by wires. Setback rules apply when cables run through holes in the framing or when they run parallel to and are secured to the sides of the framing. Smaller wires must be run through bored holes or be attached to a running board.

Wires that run parallel between joists attach to the inner side of a joist using electrical staples. The hole cannot be larger than one third the depth of the joist so the maximum hole size for a 2 12 joist actual size 1 1 2 x 11 1. If you re not experienced in electrical wiring call a pro. Wires to the bottom of a floor joist unless the wire is 6 2 8 3 or larger.

The general setback rule is that cables must be at least 1 1 4 inches from the face of the framing members. Where and how to drill joists for electrical cables or plumbing runs depends on what type of floor framing you have. In a wall ceiling floor or roof. This means that they are attaching items like bike racks garage door motors lights and other items to the bottom flange of the tji joist.

It is important that people are aware that only specific items can be hung and the right attachment connections are needed. One reason you are not allowed to run wires across the bot tom of floor joists is to eliminate the temp tation to use the 12 2 wire for your kitchen gfi as a place to hang laundry.