Running Wires Through Floor Joists

Strip the end of the sheathing attach the wires to the fish tape and tape them in place.

Running wires through floor joists. I need to run about 8 x 14 2 wires 12 wire water heater 10 dryer wire and 2 x 12x2 wires through a set of 10 floor joists 2x10. The picture above shows what can happen when an untrained plumber is working on your home. Securing cable in new construction cable must be stapled or supported with straps every 4 1 2 feet. 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 4 in is 3 3 4 in.

Let s review what is wrong with this particular joist and discuss what the proper technique is for. I m in bc canada and need to figure out how many holes i need to bore in the dimensional floor joist lumber and the number of wires i can run in each hole as a run across the room to a main panel. Smaller wires must be run through bored holes or be attached to a running board. Make sure to use approved attachment methods drilling holes through joists or stapling the cable where required.

It also must run within 12 inches of each metal box or within 8 inches of each nonmetallic box. B the framing member that runs around the perimeter of your house and that the floor joists butt into often gets riddled with large holes this space is the logical exit point for dryer and furnace vents big electrical service wires and fireplace fresh air intakes. Drilling floor joists to run plumbing wiring or ducts can be tricky. Run the free end of the cable to the next stud cavity location.

3 run the cable through the holes you drilled in the studs or joists toward the new receptacle box taking care not to kink or twist the cable. 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. There are very specific locations and sizes in the code telling you what is allowed. Wires to the bottom of a floor joist unless the wire is 6 2 8 3 or larger.

You can drill the holes anywhere along the length of the joist first photo.