What to do if the 2nd phase has disappeared in the 3-phase network?
Essence of the question:
1) I have a three-phase (three-pole) circuit breaker at the input, the fourth input wire goes to the bus (from Leroy, 2 * 7, blue))). I think the color is not important, but white, red and blue wires go to the machine, brown to the bus.
2) With the load off, the screwdriver-tester (a multimeter has not yet started, unfortunately) glows brightly in the first and third phases, about half as weak - in the second. There is no glow on the bus.
3) When the load is turned on, the second phase (red wire) does not light up, only flashes and goes out when you touch the end of the tester with your finger (to the piece of iron). The same thing happens with the bus (zero), the second bus - the earth - does not light, grounding is done directly from the shield, buried in the ground.
4) Accordingly, nowhere else in the house (on the second shield inside) is there a second phase.
5) On the first floor, where everything is brought into the primary shield, the tiles connected to the outlets are electric shock, burn out.
I admit that the input wire could be mixed up, I tried to imagine what would happen if zero (neutral) is connected instead of a phase, and the phase is thrown on the bus (if suddenly the neutral is not isolated at the substation) ... But there is not enough knowledge.
Tell me, what kind of disease does my visor have? Beg!!! We do not have normal electricians, the village (((
Is the zero (blue) bus connected to the ground? Generally should be. It is strange that you have the colors of the wires mixed up deliberately. If the busbars are connected, then in the case of a mixed-up wires and connecting the phase to the "ground" - short-circuit would have occurred immediately. Plus, if a phase were dropped on the bus zero and zero on the machine, then you would have two phases in all outlets, that is, 380 volts.
The plates break perhaps because you have some kind of problem with the grounding and with the connection of the wiring as a whole. If there is still grounding, then the sockets must also be grounded, i.e. connected by three wires. But why do they burn out? This question is already more interesting, I have the idea that there are problems with zero.
In general, such advice - you need to measure everything with a control lamp and a multimeter and see where and what is. I deliberately did not comment on the “blinking” of the indicator screwdriver, because I do not know what type of indicator you have specifically. If LED - it is very specific, if neon - it is more accurate and simpler. It can flash and go out if there is any capacity in the circuit that again leads me to think of poor contact or a break in the second phase.
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Anna wrote: "1) I have a three-phase (three-pole) circuit breaker at the input, the fourth input wire goes on the bus (from Leroy, 2 * 7, blue))). I think color is not importantbut the white, red and blue wires go to the machine, on the tire - brown. "I think it’s necessary to dig through the colors, check the machine (contacts may burn out)