Electrical Wiries Through Floor Joist

Keep the hole at least 2 in.

Electrical wiries through floor joist.

From the top and the bottom if it s a dimensional lumber joist. Appears to be a bit of a judgement call. Electrical staples are approximately 1 2 inch wide and can be attached with a hammer to hold the wire in place beneath the joists. Cutting notches and drilling holes in joists as part of any new installation work or a re wire a cable trunking or cable tray sometimes has to pass through an element of building construction such as a floor wall or beam necessitating the formation of a notch or opening in the element.

I remember reading somewhere concerning rules about drilling though floor joists but i can t find it anymore. Running wire through floor joists. The best way to install an electrical staple is to put the prongs. Where and how to drill joists for electrical cables or plumbing runs depends on what type of floor framing you have.

In canada we have rule 12 514 b that allows the installation of wires on the lower faces of joists if suitably protected. Drill holes with a diameter of no more than one third the depth of the joist staying 2 in.