How to properly remove insulation from wires: 3 effective ways

How to do it quickly and safely, without damage to the veins? We will tell you about three effective ways.

When laying wiring in the house, when connecting the input cable or repairing a power tool, you will often encounter the need to strip the wire from the insulation. How to do it correctly, so as not to damage any veins, no fingers? We will show 3 effective methods of cable insulation cutting.

1 cleaning with a knife

This is the easiest and most affordable way to clean the wire from insulation at home. But at the same time it is one of the most difficult, since it requires appropriate skills. We will consider removing the insulation with three knives:

  • Stationery knife.
  • A knife with a heel.
  • Specialized knife for removing insulation.

Stationery knife

A stationery knife is the cheapest, but also the most dangerous way to damage the wire core, especially a small cross section. But if you don’t have any more suitable tool, you can use a stationery knife. This knife is well suited for cutting flat or round cables with ‘not flooded’ insulation, that is, when there is a space between the external insulation and the veins.

To remove the insulation, you must first carefully cut it at the end, so that the knife enters between the veins (12

Insulation of each core can be removed, by drawing the knife tangentially from the place, to which it is necessary to strip towards the end of the wire. .

We perform all manipulations on our own: it is not necessary to direct the blade towards the fingers. For cutting it is better to take a stationery knife with a wide blade, since it is more rigid.

Knife with heel

These knives are specially designed for cutting cables with flat and round ‘not flooded’ insulation. In comparison with ordinary stationery knives, such a device removes insulation much faster and the risk of damaging the core is much less (although it is not completely excluded). True, a knife with a heel is not a cheap pleasure (it costs from 1500 to 5000 rubles), therefore, it is worth buying it, if you regularly work with laying flat cable.

To remove the insulation, we start a heel under it (12

As in the case of a stationery knife, you need to cut from yourself, since it is very sharp and there is a possibility, that in the process of conducting the cable, it will break and injure the electrician.

Specialized insulation stripping knife

In this knife, the blade is retractable and at the same time can change the direction: for transverse and longitudinal cutting. Suitable for cutting cables with a diameter of 8 28 mm, and with ‘flooded’ insulation.

To cut the wire, it is necessary to extend the blade along the thickness of the insulation, place the wire, lower the bracket and pull the wire from the knife. And to cut off the excess insulation, we put the knife in the transverse position, we clamp the wire at the base of the cut insulation, and cut it off in a circular motion.

It’s a pleasure to clean a small section of home wiring from insulation with such a knife, but it will not work for thick cables. On average, such a knife costs 1000 - 1500 rubles. However, his blade blunts much faster, than a knife with a heel, but for household needs it will last for a long time. Of the rather strong and durable models, we can recommendFelo 58401811

2 Removing insulation with pliers

Suitable here, like ordinary pliers, so are the side cutters. This method is suitable for removing the insulation of wires of small cross-section.

Clamp the wire with the sharp edges of the pliers (12

Working with pliers or side cutters requires some skill, since when removing the insulation, there is a chance to transfer or completely tear off the vein. Pliers are suitable for repairing extension cords or other flexible cables, but to work with thick mono-blades, you will have to use other devices.

3 Working as a stripper

The most convenient, a quick and safe way, in our opinion, to clean the wire from insulation. The stripper is a device with four clamping plates: two clamp and hold the wire motionless, and the other two remove the insulation.

The stripper works on the principle of pliers, only here, when the handles are brought together, the head moves apart. To perform a sweep, it is necessary to set the desired wire diameter on the stripper, place the wire, clamp it and bring the handles together, the insulation is removed.

The stripper has several advantages over other devices. First of all, this is the speed of isolation removal, manipulations take literally 5 seconds. Secondly, safety for an electrician, since damage to the fingers is completely excluded. And thirdly, no damage to the vein. However, it is inconvenient to remove large sections of insulation with a stripper, for example, if you need to clean 50 cm of the wire, you will have to remove it in pieces. There are also restrictions on the diameter of the serviced cable (each model has its own indicators).

Summing up, I want to say, that each method has its advantages and disadvantages. However, in any case, with proper skill, even the simplest tool can quickly and effectively remove the insulation.

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