Mains voltage problems
The house is located in a village in the Moscow region, the house is new, all the wiring is new (about 5 years). From the middle of spring to the middle of autumn, everything is fine in the power supply network from mid-spring to mid-autumn, but from mid-autumn 2-3 sockets may turn off immediately in the house (but if you turn it off for a few days then everything works but again for a while), the heaters begin to warm slightly , the pump in the well also weakly pumps, the bucket is typed for about 10 minutes. The neighbors are all right, tell me what could be the reason?
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The sockets are disconnected - if I understand correctly, you have one or more circuit breakers that supply this part of the wiring disconnected, and if everything is okay then, they turn off due to overload - that is, you include a load in these sockets that in total exceeds rating of this circuit breaker. If the heaters are warming weakly, the pump is pumping weakly, then this is a sign of low voltage, which can be due to two reasons.
The first reason is that low voltage comes to you, during a cold weather this is a common problem. Moreover, if everything is normal with the neighbors, then they can simply be powered from another phase, at which the voltage is higher.
The second reason is the wrong cable section in your wiring. If the load of electrical appliances is higher than permissible for this cable, then a voltage drop will be observed. In this case, the cable will heat up, which will ultimately lead to damage, fire.
Invite an electrician to find out the reason. I measured the voltage, and also checked all your wiring, in particular, the correspondence of the cable sections to the actual load of electrical appliances, the state of the contact joints, on which there can also be a voltage drop.