How to amend electrical cable?

 

For an electrician to do quality and well-done work, one of the crucial knowledge that will be needed for him is to know how to make a wire splice in the correct and safe way! Nowadays many electricians claim that they know how to correct the cables correctly, but at the time of testing, they do the opposite. So that this doesn’t happen to you, Mundo da Elétrica will teach you how to splice electric wires and cables correctly! In this article, we will talk about the types of conductive cables and show how to splice the electric wire. Come on, guys!

, such as electric shock, and can even cause a fire due to the overheating of the splice. For this to not happen, it is necessary to carry out the amendment in the best possible way!

Types of Conductor Cables
See the rigid and flexible cables!
What are the types of splice cables?

In order to make a well-made splice, it is necessary to know the types of cables used in the installations, and these types are basically two:

Rigid cables: Cables that have only one conductor wire that is usually copper, but can also be aluminum. Because it is only one wire in the cable, this single conductor wire is the size of the cable section.
Flexible cables: These are cables that have several conducting wires that are usually copper, but can also be aluminum. Since there are several wires in the cable, they are thin, but the set of all wires is the same as the cable section.
It is important to know that a splice will never replace a molten cable, as in the molten cable there is no space between the conductors as these spaces were filled by the tin that was placed in the foundry.

Types of splice
There are three types of technically correct splices that are made on rigid and flexible cables, they are:

Extension Extension
Rat Tail Splice
Derivation Amendment
Extension Extension
Also known as a ligation splice, this splice is used to connect two cables into one, or to increase the length of one cable.

Inflexible cable
Use stripping pliers or a pocket knife to strip the cables to be connected, leave the two cables with an equal measure of the live part.

Take one wire from the set only and wrap it around the others, with a space of a finger from the cable cover. Divide the cables into three parts of filament each from the part where the wire was wound, then interlace the two cables, rotating the live part of the cables in opposite directions.

With universal pliers, tighten the cables to reduce the spaces between the conductors and finish, after that insulate the splice by tightly tightening the tape and so that it is the same thickness as the cable.

Flexible connection splice.
Extension with flexible wire!

On hard cable
Use stripping pliers or a pocket knife to strip the cables to be connected, leave the two cables with an equal measure of the live part.

Cross the wires so that they form a 90 ° angle, pass one of the wires under the intersection in one direction and with the aid of universal pliers, wrap this wire in the extension of the other and tighten it so that the tip does not pierce the insulation. Do the same procedure with the other wire, but in the opposite direction.

After that finish with the universal pliers, make the insulation and leave it in the same thickness of the cable.

Flexible connection splice.
Rigid wire extension splice!

Rattail splicing
This seam is similar to the extension seam and is generally used in passage boxes that have a reduced space to work.

Inflexible cable
Use stripping pliers or a pocket knife to strip the cables to be connected, leave the two cables with an equal measure of the live part.

Cross the wires so that they form a 90 ° angle and twist them, with the aid of universal pliers, tighten the braid and finish, and after that bend the braid in half with the pliers so that the tip does not pierce the insulation. Perform the insulation by pulling the electrical tape tightly so that there are no air bubbles, but not too much so that the tape does not break.

Flexible mouse tail
Splicing mouse tail with flexible wire!

On hard cable
The method of making this splice on a rigid cable is the same as the method on a flexible cable.

Flexible Rat Tail Splice
Splicing rat’s tail with hard wire!

Bypass splice
This splice is used to bypass a single conductor without the need to cut the wire.

Inflexible cable
Use stripping pliers or a pocket knife to strip the part to be tapped, also strip the second conductor to be placed in the tap.

Separate the main conductor into two parts, making a “hole” in the cable, insert the second conductor in the middle of that “hole” and divide it into two parts as well. Rotate a part of the conductor that has been introduced in one direction and the other part in another direction.

With universal pliers, tighten the windings to strengthen the splice and finish. After that, carry out the insulation with care not to leave air bubbles.

Flexible bypass splice
Bypass splice with flexible wire!

On hard cable
Use stripping pliers or a pocket knife to strip the part to be tapped, also strip the second conductor to be placed in the tap.

Touch the second wire to the main wire at a 90 ° angle and then start twisting the second wire to the main wire, tighten the seam with universal pliers to strengthen it and then perform the seam insulation, taking care not to leave air bubbles.

Rigid bypass splice
Bypass splice with rigid wire!