We often receive questions about how to pull an outlet from another outlet. In this article we will explain how to make the derivation of the points of a circuit, how to pass the cables and connect the modules, come on guys!
General-purpose sockets are usually installed in groups of 2, 3, 4 or even more sockets, so you need to know how to divide the circuits, how to size and connect the sockets according to the required power and here on the website you have an entire article speaking of dimensioning electrical cables, it is very important to know this before making any connection of sockets.
How to connect a general-purpose socket?
The first step is to run the cables together until you reach the last outlet point. 3 cables will be passed, which are phase, neutral and earth, always leaving a sufficient amount of cables to make the derivation splices in each passage box. Before starting the derivations, it is recommended to make a simple knot in the cables in the last box, just to prevent the cables from returning to the piping. All of this can be seen in the image below.
The next step is to make the necessary derivations, always performing the proper insulation. There are several ways to bypass these cables, but the possible future problems make only one the most recommended, and that is what we are going to explain now.
Several people do the derivation by cutting the cables and splicing everything together and although it works, this type of derivation is not the most suitable for several aspects. The first negative point is that if there is a problem with this amendment and it comes loose, you will lose the energization of all points from then on. The other negative point is that this type of bypass favors heating and in electrical, this type of heating is undesirable and can be avoided!
Therefore, the correct way to derive the cables is to strip a part of the cable that is passing through the box and use another cable to splice this circuit cable, as shown in the image below. Always remembering that this cable must be the same gauge and the same color as the cable of the circuit that is being derived. To strip the cables, insulated tools suitable for electrical services must be used, preferably pliers for stripping cables.
Make this derivation indicated on all cables in all the pass boxes and then make the insulation very firm with the electrical tape. Remember that proper insulation is a fundamental part of the installation’s efficiency! So if the derivation is not done well, there will certainly be heating, waste and risk of accidents.
After all the taps are finished and properly insulated, the next step is to cut the excess cables. For this, evaluate the size of the cables and always leave a small surplus, for possible future maintenance, as shown in the image below.
The next step is to connect the cables to the socket modules and then fix the modules in the box, as shown in the image below. Remember that in the 3-pin plugs, the only cable with a defined term is the ground cable.
In order to carry out apparent or overlapping installations, it is necessary to understand and know at least the basics about the passage boxes and details about conduits. In this video below the Mundo da Elétrica channel, in practice the whole process of passing and bypassing the cables mentioned in this article is shown, it is worth checking out!
Now that you know how to pull an outlet from another outlet, you need to be aware of the various factors that interfere with the dimensioning of cables and also the number of outlets per circuit, so it is necessary to plan and define the use of each outlet.
If you have noticed well, in this example we show are taken for general use, that is, for low power equipment such as television or computers. For special use sockets, it is not recommended to use 2 or more sockets on the same circuit, that is, for high power equipment such as air conditioning, washing machine or hair dryer, you should not pull a another, because the risk of overload and heating is very high, especially if the cables and circuit breakers are not properly dimensioned.