Can I use fittings for grounding in the apartment?
Tell me, can I use Khrushchev-type panel house reinforcement as grounding? If so, would such protection be good? The second question: why can a steel bath be earthed except for the shield? For example to the same fixture, etc.?
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Hello! If the armature has a good connection to the ground - in principle it is possible, try measuring the voltage between the phase and your armature. If it is close to 0, then the land is there. To understand how good the earth is, try connecting at least a 100 W incandescent lamp between the phase and the armature. If after connecting the lamp at its terminals, the voltage differs from that in the outlet by more than 5 volts, then there will be no normal protection. First of all, so that the bath does not beat with electricity - equalize the potentials in the room, for this, connect all the metal elements in the room to each other with each separate wire to the PMC bus.
And how should the lamp burn with good grounding, it dims than from the outlet?
If the earth is good, then the lamp should glow brightly. But this is not entirely true. This must be measured with an ohmmeter. According to the PUE, the resistance of the ground loop should be up to 4 ohms at 380V and up to 8 ohms at 220V, and at an object with a network of 380 / 220V - up to 30 ohms. This article details: https://our.electricianexp.com/en/kak-izmerit-soprotivlenie-kontura-zazemleniya.html.
One wire to the phase and the other to the valve shows 200-210 v what does this mean? Could the fittings be null? And is it not dangerous to ground to the armature, because it can come into contact with the iron heating pipe?
And how many volts are between phase and zero? You have carried out a series of checks and all indicate a poor grounding. It is not clear what grounding can be dangerous to the valve and that it is in contact with the pipeline? He is also laid in the ground.
Between phase and zero 220. Everyone says that it is impossible to fittings to the risers, that in cases when current flows through the pipes, etc. to the shield there is also just a zeroing, where can I go?
Why do you really need grounding so much that you have been hard at work asking for permission to ground for reinforcement for a week? Set the RCD on the input to 30 mA, preferably 10 (if there are no false positives) - it will work with a two-wire circuit, when you touch the live part. The fact that there 220 is without load, many also have a heating battery, if you connect a light bulb, it will not even try to burn, and the multimeter shows the rated voltage.
I checked that when I go to the outlet, the LED lights up normally, and when connected to the fixture, it lights up weakly by about half, will it be a normal ground
No, what you write is not a normal ground.
And tell me why the bath itself is not grounded, but shows the grounding as well as the riser, because it is not connected to it dry and has nothing to do with it, is separated from everything, how can this be ???
If during the measurements, according to your words, the bath shows the same results, then the bath is not completely isolated. After all, I’m sure that on her legs you do not have dielectric rugs and other things. It can be in contact with plumbing, faucets, wet tiles, concrete and more.
I want to connect the refrigerator through a voltage relay to a bison, Novatek-elekto-type socket. Is there a new SVENvsp-16pd, do you know anything about it? Which of them can you advise?
Hello dear masters. What do you say is it possible to take the grounding on the apartment from the fittings inside the curbstone.