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Recessed Distribution Panel for 18/24 Circuit Breakers Without White Door Busbar - 33.04.700.2 - by TIGRE https://amzn.to/3tggSHp ????????Instagram: / genesisengenharia10 In this video, we will show you how the TN-S grounding scheme is done inside the three-phase distribution panel. 6.4.2.1.3 A busbar, called the “main equipotential bonding busbar” (BEP), must be provided next to or close to the power supply entry point, to which all elements related in 6.4.2.1.1 can be connected, directly or indirectly. Note 2 - It is permitted that the PE bar of the building's main distribution panel accumulates the BEP function. Therefore, this panel must be located as close as possible to the power line entry point into the building. 4.2.2.2.1 TN scheme The TN scheme has a directly grounded supply point, with the masses connected to this point via protective conductors. Three variants of the TN scheme are considered, according to the arrangement of the neutral conductor and the protective conductor, namely: a) TN-S scheme, in which the neutral conductor and the protective conductor are distinct.