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what happens if you drill through an electrical wire

by Mrs. Greta Larkin Published 3 years ago Updated 3 years ago

Damage to electrical wiring from drilling into walls is a surprisingly frequent phenomenon – especially when buildings are being renovated. Not only do the lights go out, but you usually blow a fuse as well. With a bit of luck, you might only have to repair the cable sheath.

Full Answer

Can a drill hit an electrical wire?

Because of this, if you hit a bit of loose electrical wire, your drill will likely just brush it aside, not actually penetrate the wire. However, despite these things, hitting electrical wire isn’t impossible.

What happens if you drill into a wall and damage wiring?

Damage to electrical wiring from drilling into walls is a surprisingly frequent phenomenon – especially when buildings are being renovated. Not only do the lights go out, but you usually blow a fuse as well. With a bit of luck, you might only have to repair the cable sheath.

What happens if you drill a hole in a power cable?

Your first warning would be the thing that the wire is carrying electricity to suddenly losing power, but of course that would be contingent on that thing being powered on at the time you drilled through the wire. It would be very unlikely that such an incident would only affect the appliance or fixture at the end of the cable, however.

How do you know if you’ve drilled through an electrical wire?

Finally, your most up front sign that you’ve drilled through an electrical wire will be the bang and possible flash as the wires short out. The flash will only be visible through the hole you are drilling, of course, but with the amount of electricity in a typical building, the bang should be loud enough to hear through walls.

How do you know if you hit a wire when drilling?

One way to tell if they have screwed into the wiring is to measure AC volts from screw to hot, screw to neutral screw to ground. A Wire that is somewhat free behind the dry wall might not always be centered and I have seen a wire get caught in a home that was built in 1997.

Can you drill into electrical wires?

Electrical Wires Metal plates are hard to drill through, so if you hit something that your drill won't penetrate, stop trying! Your drill should easily bite into wood and drywall. If it doesn't, consider it a warning that you should stop drilling.

Can you get electrocuted while drilling?

One of the main reasons drilling into the wall can be dangerous is that you risk hitting electrical wires or gas and water pipes. Wires in the wall often connect vertically and horizontally behind outlets and sockets and can lead to electrocution. Hitting a pipe in the wall can cause flooding.

What happens if you nail into a live wire?

It could get hot enough to ignite a fire on the wrong side of the walls. Of if the wire is cut entirely, or passing through the nail, it is bound to start arcing. Arcing makes a tremendous amount of heat - it will heat up much, much faster than a nicked wire, and could start a fire going in less than a minute.

How deep are electrical wires in walls?

How far into the wall are wires located? Wiring usually runs horizontally, about an inch into the wall. The parameters are 6 inches or 12 inches above the receptacle.

Do electric wires run up or down?

Horizontally from any switch or socket – The zone runs horizontally from both sides of the socket or switch until it reaches a corner or an obstacle such as a door. Vertically from any switch or socket – the safety zone runs the width of the socket or switch both up to the ceiling and down to the floor.

How do I know if there are wires behind a wall?

According to Popular Mechanics, the best tool for locating wires is a stud finder with AC wire detection. Use painters' tape around the area you wish to scan; this will serve as a place to mark the location of the wires after detection.

Can a nicked wire cause a fire?

If the nick is deep enough, the wire will overheat at the nicked point. This overheating is not detected by the fuse or circuit breaker and the result is an electrical fire.

How do you avoid cables when drilling?

2 – Avoiding wires Investing in professional equipment, such as a cable avoidance tool, is the safest option to avoid wires. However, if you don't have access to this, most wiring runs horizontally 6 inches or 12 inches above the receptacle, so avoid these areas. If it is possible, only drill shallow holes.

What happens if you hammer into a wire?

Hitting a wire or pipe could cause serious injuries to the person holding the drill and could damage the home as well. Aside from you getting electrocuted and ending up in the emergency room, a fire could start, or your home could get flooded.

What to do if a screw hits a wire?

0:385:22Wires Are Accidently Drilled, What To Do? - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd it will cause a fire if you pull the screw out or the drill bit. You might get away for a littleMoreAnd it will cause a fire if you pull the screw out or the drill bit. You might get away for a little bit but once you've cut into the insulation of that conductor that ungrounded conductor the hot.

How do you fix a nicked electrical wire?

1:219:47How To Repair Damaged Romex Wires - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo what is that solution a company called te does make an approved splice kit that has two ends thatMoreSo what is that solution a company called te does make an approved splice kit that has two ends that will connect. Together. So you'll cut your damaged romex install those in the two halves.

How to apply the Cable Repair Kit

This video shows how easy it is to use the Cable Repair Kit. You can see the predecessor model LVRK (with the shorter crimp connectors). The handling with the new LVRK-L set is almost identical – with the difference that thanks to the longer connectors now two crimps are possible.

How to perfectly repair damaged electrical wires using the LVRK-L set

1. Observe all precautionary measures! Only after ensuring that the power is really off, remove the cable sheath from the affected area and separate the wires to expose the damaged section.

What happens if you drill into a wire?

If you do drill into a wire behind your drywall, you’ll more than likely know it immediately by the resulting spark, pop, and perhaps a power loss. If none of these things happen but you notice what looks like a bit of wire insulation on your drill or have any other reason to believe you’ve hit a wire, don’t ignore it for safety’s sake.

How to reduce chances of hitting internal wiring?

By limiting your nail or screw length to 1 1/2 inches or less, you greatly reduce your chances of hitting internal wiring. Use a wire and/or stud finder. A wire sensor will indicate the path or power sources in your walls. This can be especially helpful in older or highly renovated areas. Next post.

What to do if a breaker blows?

If a breaker blows, the easiest thing to do is turn it back on see if it works. That may not be a good idea. If there were actual sparks and noises when you hit the wire, you’ll want to leave the breaker off until you actually inspect the damage. And when you begin your repairs, you’ll want to trip or even completely disengage affected wires from the breaker. For your own safety, don’t ever attempt to repair an electrical wire while there’s still power available to it.

What to do if you don't know anything about electrical?

Don’t endanger yourself or anyone else by trying to repair dangerous electrical wires without the appropriate knowledge of how electrical circuits work. You’ll also need to know the current codes that must be met to protect wiring from future damage.

Can a wire be a hot spot?

A wire that is only partially severed could cause a hot spot, which becomes a potential fire hazard even if the circuit was not disabled. There is also the possibility that you could hit a ground or neutral wire or both. In these cases, there may not be a noticeable indication at the moment.

Can you drill through 2x4 studs?

In the U.S. it’s common to find wires passing through holes drilled in 2 x 4 studs. Codes require a protective metal plate to cover the side of the stud to prevent drilling into the wires. So if you find yourself drilling into heavy resistance, stop. You may have hit a nail plate covering.

Can you hit electrical wires while drilling?

Some call it a rare event to hit an electrical wire while drilling holes through sheetrock. But whatever the statistics, it does happen. And the older or more renovated the building, the higher the chance that wires may be closer than expected to the backside of sheetrock or located in unpredictable places. 30 Tools Every Man Should Have In His ...

What happens when you hit a PABX cable with a 12mm SDS+ bit?

is quite funny when you hit a PABX cable with a 12mm SDS+ bit the phone starts ringing then stops when you stop the drill and then starts again....quite funny when its not you holding the drill!

Is it dangerous to hit a mains cable?

Hitting a mains cable normally is quite obvious but can be dangerous if you just nick the sheath then put a conductor in the hole (expanding bolts and unisulated spanner can be apainful and dangerous. That said i once found a live uninsulated mains cable in a stud wall when my arm was in the wall to the elbow! S.

What You Could Hit

Lets start with what’s actually in your wall. There are three main things:

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How to Avoid Hitting Things in Walls

Hitting a pipe seems bad, I know. But it’s actually really easy to avoid hitting things in walls.

Fancy Tools

You might be wondering about fancy detection units on the market. They exist, and they’re not that expensive. Feel free to buy one if it makes you feel better.

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