How to determine if there is a "ground" in the outlet?

Vyacheslav Golovanov2012-03-21 01:08:37

Iron

Vyacheslav Golovanov, 2012-03-21 01:08:37

How to determine if there is a "ground" in the outlet? With a multimeter and tester...

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10 answer(s)

philipto, 2012-03-21
@philipto

An sensible discussion of this issue is otvety.google.ru/otvety/thread?tid=0c3fb359adce7ca7&pli=1
In fact: the most accurate way is to call an electrician who can trace the grounding route from the shield to the copper rod or circuit actually dug into the ground.
It can be shocked not only by poor grounding, but also by the fact that a neighbor has grounded something on the water pipe (if the washing machine or dishwasher is connected by a conductive hose or pipe to the water or sewer pipe - if the latter are also conductive).

Roman Gogolev, 2012-03-21
@romka777

My advice is for you.
Take a cartridge with a light bulb and two wires, throw one wire to the phase, the other to the ground:
1. The light bulb is on normally => you have no ground, but zero.
2. The light is off => you have nothing at all.
3. The machine worked, the light was turned off => congratulations, you have zero.

Anatoly, 2012-03-21
@taliban

As far as my knowledge allows, there are plus, minus and earth in the sockets, that is, there should be three holes. If you do not have three holes in the outlet, then there is no earth for sure. If there are three, then you need to look at the wiring, because usually land is not provided for in houses, and hell knows where your “third hole” leads

svfoster, 2012-03-21
@svfoster

Bearing in mind that our homes like to act like "zero and earth one satan", and that the most obvious solution is the simplest, just open the outlet and make sure there are 3 wires and there are no jumpers. Do not forget to first take a flashlight and pull the switch down.

Eddy_Em, 2012-03-21
@Eddy_Em

As mentioned above, if you have grounding in the outlet, then between phase and ground should be somewhere in the region of 220V, between zero and ground - up to ~ 60V. And only an electrician can tell how your earth complies with the standards by measuring the resistance of your earth. Although, you can, of course, borrow this device from someone and measure it yourself.

m08pvv, 2012-03-21
@m08pvv

The easiest way is to find out from those who did the wiring in the house. Or, if this option is not suitable, then go for a walk yourself or with an electrician. By external manifestations, it is problematic to distinguish zero from the earth (unless one of them is made badly).

drunk, 2012-03-21
@drunk

There must be a potential difference between ground and phase.

Nickel3000, 2012-03-21
@Nickel3000

I haven’t been involved in electrical engineering for a long time, but check the potential difference between neutral (zero) and earth, which is probably earth (if the house has central heating, then the radiator will come down if the neighbors have not connected zero and metal pipes to it). Should be different. But if they are shocked, then you have no earth. Better go to easyelectronics.ru or write to the author, Di Halt is on Habré.

fenst, 2012-03-21
@fenst

I heard that the battery and the riser are connected to the EMS - the potential equalization system. And this seems to be a separate topic from the “earth”.

Vitaliy28, 2021-08-28
@Vitaliy28

With a multimeter, this is very easy to do. We measure the voltage between zero and phase, it should be 220V, then between phase and ground, also approximately 220V. Well, then we measure the resistance between zero and ground, it should be absent, but if the resistance is 0, then you do not have ground, but zero instead of ground.