FALTA DE ATERRAMENTO NA INSTALÇÃO ELÉTRICA ! COMO RESOLVER ELETRICISTA (TNC-S)

When an electrical installation lacks a grounding system, how do you protect the circuits? I'm electrician Everton Parreiras, and you're watching the "Things for Electricians" channel. Before we begin, I'll recommend a Brazilian company that has been in the market for over 40 years: AGL. I'll leave AGL's website in the video description so you can learn about not

only this but also many other equipment in the areas of electronic security, smart homes, and electrical automation that they produce. Speaking of electrical installations without grounding systems, it's impossible to create one due to lack of space for various reasons. The standard allows us to create a grounding system (TNCS) in the distribution panel. Moving on to the

assembly, we have the phase conductor that comes to the main circuit breaker to distribute the phase to the circuit breakers. We also have the neutral conductor that comes from the service entrance. This neutral conductor comes directly from the service entrance and arrives at the distribution panel. This situation is the most common: where there is no

grounding system in the distribution panel, and no grounding conductor arrives. Within electrical installations lacking a grounding system, the TNCS grounding system is used. When an electrical installation lacks grounding, it's impossible to create a grounding system due to space constraints or other bureaucratic issues. Therefore, the NBR 541 standard allows for the creation of the

TNCS system. The minimum gauge for this neutral conductor must be 10 mm² according to the standard. Following this criterion, I can create the distribution grounding system. I'll take a conductor coming from this protective busbar, which we will use to ground the circuits, and bring this grounding conductor (minimum gauge 10 mm²) to the neutral