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See how to become a professional, safe electrician capable of performing any service in the electrical field: https://eletr.co/cortes-engehall/?utm... ------ The CLOSEST POSSIBLE Grounding to the STANDARD that you will see Electrical grounding or “Grounding” originally began as a safety measure used to help prevent people from accidentally coming into contact with electricity causing everything from minor accidents to irreparable bodily harm, and in the most extreme case, death. Although electrical grounding may have originally been considered only as a safety measure, electrical grounding has become an essential part of everyday electrical use. Because the large number of electronic devices such as computers, televisions, microwave ovens, fluorescent lamps, and many other electrical devices generate a lot of “electrical noise” that can damage the equipment itself and cause it to operate less efficiently. Proper grounding can not only remove this unwanted “noise,” but can even make surge protection devices work better. Before starting the procedure, you must be aware of the requirements of the Brazilian Association of Technical Standards (ABNT) and the Brazilian Regulatory Standards (NBR). Among several standards, pay attention to the specifications of NBR 5410 – Low Voltage Electrical Installations. In the following subsection, 6.3.3.1, you can find the possible grounding systems that can be used. Which grounding to use depends on the type of service. When installing a grounding system for a specific device, the manufacturer usually specifies which type of grounding system to use. When not specified, choose to use the TT system whenever possible. If not, try the TN-S system and, as a last resort, the TNC system. Some calculations, such as the dimensioning of a grounding system, are often considered a matter to be resolved by an electrical engineer. Factors such as the number of rods and the soil resistivity value influence the resistance value when electrical grounding. Here are some tips, but if you still have questions, look for an engineer in the area to help you solve them and, if necessary, to create a project for you to execute. In this project, the engineer will tell you where to install the rods, the distance, the quantity and the list of materials.