How to differentiate between electrical cables by their color?

The colors of the cables are not only supposed to be aesthetically pleasing, but each color can refer to a specific use, which is why it is also recommended to use an insulating tape of the same color, for prevention.

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Conductor: It is an element that conducts an electric current and can be made of various metal materials, and copper is the most widely used. Likewise, it can be formed by one or more strands of this material.

Insulation: It is the coating that surrounds the electrical conductor in order to prevent the electric current from circulating outside it and harming those who use it or manipulate it.

Filler layer: It is an insulating material that wraps around the electrical conductors to keep the circular section of the assembly uniform and stable.

Cover: It is made of materials that keep the cable mechanically. Its function is to protect the insulation of electrical conductors from the influence of temperatures, sun, rain, etc.

What do the colors of the cables mean?

green-yellow – it is also called the “ground” conductor; That is, it will transmit electricity to the breaker plate, to the rod buried in the ground. This is to prevent electricity from passing through the person. In the past, gray or white cables were used, but to avoid confusion, this more eye-catching two-color cable began to be used. These connectors are not branded.

Blue: it is neutral. Until 1970 the color red was used. Its designation is N.

Brown/Black/Red: This is the phase cable, although it can also be gray for phase identification in a local installation. It has been classified as L.

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Within an electrical conduit, we may find simple two-channel cables, or cables of different colours. If the two channels (the positive and the negative, allowing electricity to circulate), have the same color, it’s a fuzzy arrangement. For example, if you want to extend the electrical cable for a lamp, you will see that it does not have a color rating. This means that the position of one positive and the other negative is not clear.

The cable must have two channels, one positive and one negative. Through one channel electricity “enters” and through the other it “exits”. Therefore, these two channels must be connected on each installation, rather than just one.

You may find a third wire in the conduit that appears to have no function. It is probably the discharge or grounding cable that allows electricity to circulate in the event of accidental contact. Lightning rods, for example: have a conduit that traps electricity and releases it to the ground, preventing condensation in the house. Grounding serves the same purpose.

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When we need to fix a switch, change an outlet or make electrical installations in our home network, it is best to hire a dedicated professional, so as not to take unnecessary risks and thus ensure a good job. In any case, if you prefer to get the job done, we recommend that you take the appropriate precautions beforehand, keeping in mind the color code of the cables so you don’t make mistakes.

When working with electrical materials and installations, it is always best to do so with plenty of sunlight and flashlights on hand, if it will be at night. This will allow you to get more visibility and avoid accidents. Remember that the tools that you will use must have a rubber coating.

The first thing is to cut off the general passage of light, and lower the box switches.

Use gloves and protective gear to handle electrical cables: remember that static electricity can hurt you, too. Wear shoes with a rubber sole if possible.

It is important to use insulating tapes as desired to cover the free ones. The insulating tape is an important element when carrying out or repairing electrical installations, as it allows us to insulate electrical cables to avoid short circuits. This tape is very flexible and very safe. The only precaution that should be taken is that after a while this tape tends to dry out and harden, so it is advised to change it.

How to differentiate between electrical cables by their color?