Neutro dá choque.

Neutral gives shock? Want to know the answer? So, get to the point. Touch the neutral conductor? Only on it? Do I run the risk of having an electric shock? The first thing we have to understand is the difference between tension and potential. Let me move this little man away from here and bring my paper multimeter.

Pay close attention. If my phase is at a difference of 127 and my neutral at zero, when we measure the voltage between phase and neutral, we are not measuring the potential, but the difference of potential or its DDP. The difference of potential between phase and neutral is 127 volts.

We can say that theoretically the neutral has zero potential because it is grounded in the transformer. Now notice here that if due to a failure in the transformer my neutral had a potential of 50 volts and my phase 220 the difference in potential or neutral phase voltage, our measurement, which would be the difference in potential, would be nothing more, nothing less than 170 volts, or our DDP of 170.

Now let's answer the question that was asked at the beginning: if the neutral gives a shock. Depending on the situation, it is possible that someone will take a shock in the neutral. If he is well isolated, for example, wearing boots, and touches both the phase and the neutral, he will enter the same potential and will not suffer shocks.

Now, if I'm barefoot, stepping on the ground and touching the phase, there will be the difference of DDP. In the same way as the neutral, if it has high potential for a failure of the transformer. And if I'm holding on the phase and accidentally touching the neutral, who shocked me was the difference of potential.