The problem arose when I made the change of section. I skipped the therma sometimes. Capable once a day. The therma does not make noise, what makes me noise are wires inside the registration box. Replace it thinking that, it was wrong. The terminals were tight. What is, is that the noise is only in that register box. Could it be that when passing the cables, someone's sheath has come out and it can mean something? I will check and change the other cables since I didn't have time to do it
I don't know where you are from, possibly from Mexico or Venezuela, if so, you surely don't have a differential circuit breaker and some cable may have lost its insulation and is leaking current to ground, and that leak is responsible for the noise, if so The consumption on your meter should be very high.
I am from Capital ... Argentina ... I have no differential. Can that noise be due to loss of insulation?
I discarded Argerntina, because of the power cutter, since a leak is very likely, but if the pipes are metal, or the grounding is bare, or the line wires between them have been pinked, but it is more difficult. Look at the meter to see if you detect high consumption right now.
I'm going to feed the registration box that makes noise by skipping the cables (I'm going to do it on the outside) that come from the pipe to know if any cable that is inside the problem is the problem and direct food. I am going to try
I already found the fault. There were some burnt wires that sometimes touched the pipes and made me jump the thermal. Since it had no differential, the leak was not instantaneous. Thanks nastor for the information