# How Do You Run Electrical Wire Through Ceiling Joists?

## Can I drill a 2 hole in a 2×8 floor joist?

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.

diameter—plenty big enough for running cable.

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

## How big of a hole can you drill in a 2×4?

3 1/2 inchesIf this lumber has been surfaced (not in its rough state — S4S, surfaced on 4 sides), it’s width is 3 1/2 inches wide and this is the maximum hole diameter size that could be drilled ! 3 1/2 inches (the width of a 2×4).

## Can you run plumbing and electrical through the same hole?

There’s no code violation running through the same hole as plumbing. There’s a matter of craftsmanship, but that’s subject to opinion I suppose. When this happens it’s good to wrap the plumbing with electrical tape to insulate it, but not required… not that your situation would allow it anyways.

## Can you run Romex on top of ceiling joists?

Pipe – yes; typical Romex – no. Having said that, you obviously can create such a situation if you do it excessively over a small span. Normally you would have two parallel runs that are perpendicular the ceiling joists. … If you need to go parallel then simply run them a few inches down on the side of a joist.

## Can you run two wires through the same hole?

Don’t run phone lines, TV coax, or any other kind of signal cable in the same holes with the sheathed electrical cable.

## How far can you run electrical wire?

As an example, for a 120-volt circuit, you can run up to 50 feet of 14 AWG cable without exceeding 3 percent voltage drop….For 240-volt circuits:14 AWG100 feet12 AWG120 feet10 AWG128 feet8 AWG152 feet6 AWG188 feetDec 21, 2020

## Where run across the top of floor joists or within?

(A) Cables Run Across the Top of Floor Joists. Where run across the top of floor joists, or within 2.1 m (7 foot) of the floor or floor joists across the face of rafters or studding, the cable shall be protected by guard strips at least as high as the cable.

## Where do you drill joists for electrical wires?

1 Answer. The rules that I know for holes (not notches) are to keep your hole in the center of the joist when possible (top to bottom) or at least 2″ from an edge, round, with a diameter less than 1/3 of height of the joist.

## Is it OK to put a junction box in the attic?

Yes, junction boxes in attics, suspended ceilings and crawl spaces are legal. Basically, the rule is that ALL wire connections must be accessible. In other words, you can’t cut a hole in a wall or ceiling and bury a junction box by covering it with drywall, paneling, tile, or whatever.

## Can you drill holes in ceiling joists?

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. … You can drill the holes anywhere along the length of the joist (first photo). If you have manufactured I-joists, you can drill holes up to 1-1/2 in.

## Where do I drill holes in I joist?

Holes not exceeding 1/3 of the depth of the web in any dimension are acceptable in most I-joists, and they may be round, square, or rectangular. Holes must be placed in the center third of the vertical depth of the web. Round holes reduce the strength of the web less than square or rectangular holes.

## How can I hide my TV wires without cutting the wall?

Here are a few cheap and easy ways to hide your TV wires without cutting into your walls.Use Cord Clips to Hide Your Wires Behind a TV Stand.Use Zip Ties to Keep Your Wires from Touching the Floor.Use a Cable Management Box.Use a Wall Cord Raceway Kit.Hide Your TV Wires Inside a Baseboard Raceway.More items…•Nov 29, 2020

## How do you cover exposed electrical wires?

Covering The Cable With the power turned off you can cover the exposed wire. The only thing you should use for this is electrical tape because you know it won’t transmit the electricity. Simply wrap the tape around the exposed wire several times until it is completely covered.

## Can you run wire through rafters?

Yes, that is fine. NEC wise it would also be OK to drill the rafters and run the cable through them. As long as they are at least a 1 1/4″ away from the nailing face of the rafter. I would keep them greater than that though.