A few words about the importance of "zero" in the energy system at home

Recently, such a story happened: a friend changed the thermostat in an electric boiler - he did not pay the specialist 800 rubles, and did everything with his own hands in an hour without unnecessary trouble.

It was only when he plugged the device into an outlet - he did not heat the water. As a result of several experiments, it turned out that if you turn the plug (for the advanced - the plug), the device suddenly starts working.

What is the reason? I answer:

There is no order in the power system of the country house: wrong, weak "zero" - when the position changes sockets through a hole near the heating element, as electricians say, "sews on the body", and the device starts work. The RCDs, however, do not work. The trouble.

About warranty repair.
80-90% of houses and apartments in Russia do not have grounding. Either there is, but wrong. At the same time, if you read any manual, the power plant (device) requires it. Service centers, knowing about the trouble with grounding, do not refuse to repair the devices, but if the consequences breakdowns will be serious - you won't even get anything in court, because you don't have grounding It was.

By the way, in a properly installed outlet in the right hole - phase, in the left - zero. Take out at least your computer cable and be surprised: the correct "pinout" of the socket is indicated on the plug - where there should be "zero", where - "phase".

Be prudent: do not spare 2-3 thousand rubles to call an electrician with a high level of tolerance and experience in 15-20 years - check the cable, feel the phase wires, zero, ground.