Repairing Guides

how to repair a cut power cord

by Elissa Becker DVM Published 3 years ago Updated 2 years ago
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How to Repair a Cut or Damaged Power Cord

  1. Trim Ends. You can see my miter saw made short work of this power cord leaving jagged and frayed edges. I trimmed both ends with cutting pliers.
  2. Cut Outer Sheathing. Next, I used a utility knife to slice the outer sheathing much like cutting Romex. ...
  3. Strip Wires. I separated out the black and white wires, and used wire strippers to remove a short length of insulation.
  4. Twist and Solder. Before connecting the wires, I slipped a heat shrink tube in place. ...
  5. Heat Shrink Tube. When the soldering was finished and the splices had cooled, I slid the heat shrink tubes in place, and applied low heat with a heat ...
  6. Wrap in Tape. Lastly, I cut back any overlapping sheathing and removed some of the filler string. ...

Part of a video titled How To Repair A Damaged Electrical Cord Safely - YouTube
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7:06
We have to remember to put the heat shrink on the inner wires as well now this is going to be tooMoreWe have to remember to put the heat shrink on the inner wires as well now this is going to be too long of a piece and it doesn't have to be very long it only needs to overlap the area of the repair.

Full Answer

How to repair a cut power tool cord?

Steps Explained

  1. Open the tool. First of all, you’ve got to take the end off the power tool. ...
  2. Locate the power switch. Once you’re inside, you will see the connectors, usually white or black. ...
  3. Take off the damaged Cords. Now, take the plug and cut the wire that connects with the damaged cord. ...
  4. Connect New Cords. ...
  5. Close All Loose Ends. ...

How to repair a damaged electrical cord safely?

Fix for a Damaged Cord. Accidentally cut your good, heavy-duty extension cord? Replacement cords are expensive, and you can save money by just repairing it. Instead of splicing, add a new plug on the piece of the cord with the receptacle and a new receptacle on the piece of the cord with the plug.

How should you unplug an electrical cord?

Here are a number of suggestions for lowering your home's energy bills that don't require running around plugging and unplugging everything you own:

  • Replace all your remaining incandescent light bulbs with LEDs. ...
  • Don't heat and cool an empty house. ...
  • Enable "sleep mode" on devices that have it. ...
  • Replace older appliances with newer, more efficient models. ...
  • Look for devices you've forgotten about and unplug them. ...
  • Insulate your water heater, or set it to a lower temperature.

Can I repair a chewed power cord?

Repairing a chewed cord is not very difficult. It is always better to solder electrical wiring and insulate the repair properly to avoid fire hazards. The following technique will restore your damaged cords to like-new working condition quickly and easily.

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How do you cut and reattach a power cord?

0:103:43How To Correctly Repair a Cut or Damaged Extension Cord -Jonny DIYYouTubeStart of suggested clipEnd of suggested clipPull it apart. Won't cut off the rest. Now we've got our three wires. So I've already done the otherMorePull it apart. Won't cut off the rest. Now we've got our three wires. So I've already done the other side and I've made the three different lengths and I'm gonna do the opposite length on this side.

Can you use electrical tape to repair extension cords?

However, Federal OSHA electrical safety standards actually do not allow us to make a repair to a frayed or damaged electrical cord using electrical tape, nor can we use electrical tape to splice two cords together .

Is it safe to fix a cut extension cord?

Cord Repair Technically, you're not supposed to splice extension cords. Even if you solder the wires, wrap each wire with electrical tape and encase the whole splice in heat shrinkable tubing, it still won't have the abrasion resistance of a new cord. Plus, it's not permissible under the National Electrical Code.

Can you tape a cut extension cord?

2:0610:35How To Repair A Cut Extension Cord-Easy Tutorial - YouTubeYouTubeStart of suggested clipEnd of suggested clipLike i said we're gonna be using electrical tape. So yeah you know if you strip off an extra inch orMoreLike i said we're gonna be using electrical tape. So yeah you know if you strip off an extra inch or two. Really not that big of a deal just make sure that you are not.

Can you use electrical tape to splice wires?

Electrical tape is good for insulating wire. It cannot hold wires together. In this case, the solder is holding the wires, but I really wouldn't trust solder for electrical wires. Wires can get warmer when in use, which could weaken or break the solder.

Can electrical tape catch on fire?

Can electrical tape catch fire? Although most reputable brands of electrical tape will have decent thermal properties (generally to cope with temperatures up to around 80 degrees Celsius), many varieties of insulation tape are indeed flammable if they're allowed to get hot enough.

Can a power cord be nicked?

Contractors can be brutally tough on their tools, and given enough time, it’s not uncommon for a power tool cord to get nicked, damaged or even completely severed. Some manufacturers have responded with removable power cords that are easy to replace, and those have been met with mixed reviews.

Can you burn yourself with soldering irons?

Soldering irons get really hot so be careful not to burn yourself or the wire insulation. If you make a mistake, trim the ends and start over.

Can you use heat shrink tubes to connect wires?

Before connecting the wires, I slipped a heat shrink tube in place. Heat shrink tubes will only constrict so far so select a tube that is just big enough to fit over the finished joint.

How to shrink a power cord?

Slide the larger diameter tubing along the power cord until it covers the repair and then shrink it with a lighter.

How to cut heat shrink cord?

Step 1. Cut 2 inches of sheathing from both cut ends of the cut power cord with a utility knife. Measure the total length of insulation that you removed and slide an appropriate length of heat-shrink tubing onto one of the sections of cord and slide the tubing out of the way. Advertisement.

How to join black wires?

Join the black wires. If the wires are multi-strand, you can twist them together with pliers and bend the twisted wires down. If you have a soldering iron, a more effective way to join them is by soldering them with electrical solder. Use a crimp lug for single-strand wire.

Can electrical tape be used to insulate a repair?

Do not rely on electrical tape alone to insulate your repair. It can shrink, peel or slide out of place, exposing the wires.

Can you repair a cord that is exposed?

Don't be discouraged, because you can repair the cord and be back to work quickly. But first, unplug the cord immediately. Exposed wires are a hazard, especially if it has been raining and the ground is wet. Then you may need a trip to the hardware store to get some heat-shrink tubing and possibly some crimping lugs.

How to repair a cord?

For a simple, straightforward way to repair a cord, fit it with a new plug. If you can’t find a new plug and wish to preserve the cord’s length, you could apply metal solder with a soldering iron for a stronger fix. Then, plug in your repaired cord to see that it works as well as a new one again. Steps.

How to repair a broken electrical cord?

No matter how you plan on doing the repair, cut off the damaged portion first. For a simple, straightforward way to repair a cord, fit it with a new plug. If you can’t find a new plug and wish to preserve the cord’s length, you could apply metal solder with a soldering iron for a stronger fix. Then, plug in your repaired cord to see that it works as well as a new one again.

How to check if a cord is broken?

Feel the entire length of the cord to see if it feels unusually warm. Look for any breaks in the insulation that could prevent the cord from working. Also, check plug prongs to see if they look melted or burned.

How to fix a cord without soldering?

Select a new plug with the same number of prongs as the old one. Fixing a cord without soldering involves installing a new plug. The new plug has to match the old one, but there are various types of plugs. Try to get an identical plug that is the same shape and has the same number of prongs.

How to repair a broken wire?

Repair superficial damage by wrapping it with electrical tape. Take the edge of the tape and place it over the broken casing. Then, wrap the tape around the cord a few times to seal the damage. Make sure it’s well-sealed, then treat other damaged portions the same way. Electrical tape is a type of black vinyl that resists electricity, so it’s great for safely wrapping up cords as long as there aren’t any exposed metal wires.

How many wires are in a thick extension cord?

Expect to see 3 wires in thicker cords like extension cords. Smaller cords, such as for household accessories, contain fewer wires. If you don’t have wire strippers available, you could use a utility knife or another sharp tool. However, be very careful to avoid damaging the electrical wires.

What happens if you use the wrong plug on a cord?

Always check to make sure you’re using the right plug for the cord you’re fixing. If you use the wrong type of plug, it could cause electrical damage to the wires.

What to do if you accidentally cut an extension cord?

If you accidentally cut your extension cord or power tool cord, save it by adding a new plug and receptacle to the two pieces; a safer solution than a splice.

How to save money on replacement cords?

Replacement cords are expensive, and you can save money by just repairing it. Instead of splicing, add a new plug on the piece of the cord with the receptacle and a new receptacle on the piece of the cord with the plug. Complete DIY projects like a pro!

How to make two cords out of one?

Instead of splicing, if both sections are long enough to be worth saving, just buy a high-quality plug and receptacle and make two cords out of one. Add a new plug on the piece of the cord with the receptacle and a new receptacle on the piece of the cord with the plug.

Can you splice extension cords?

Technically, you’re not supposed to splice extension cords. Even if you solder the wires, wrap each wire with electrical tape and encase the whole splice in heat shrinkable tubing, it still won’t have the abrasion resistance of a new cord. Plus, it’s not permissible under the National Electrical Code.

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