Posted by Bruno M. on
URL: https://www.es-forum.com/Multimeter-tp1544795p1544815.html

Hi Aline,

If the electric wiring of your house is O.K.,
all your wall outlets have 3 openings, 2 for power,
230 V AC and one for ground ( in some country's it is not
a third hole but 2 small bars at the side for ground)
The wire from that 3° hole runs to a combined naked copper bar
besides the switchboard and from their with a bigger wire
outside the house into the ground.
Standard in Europe the groundwire is green and yellow on the outside.

So when you use a multimeter on DC or AC voltage
and you want to measure if an object, or your body
is loaded with an electric tension, you run the common of your meter
with the black wire to that third hole of a wall outlet,
and touch the red wire to that object or hold it firm
between to fingers.

To be very save, you mite like to first test with holding the
pin of thr red wire to a large metal object like a blank metal
spot on the radiator. If the voltage is real zero or low
( a few volt ), you can start measuring your self or other objects.

You will further notice differences when standing barefoot
on a stone floor compared to carpet, and with or without shoes on.
and also between dry cold winter weather and humid summer weather.

Grts
Bruno M.

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--- In [hidden email], "Aline" <haikuron@...> wrote:
>
> Hi again,
>
> I am still not understanding the alternative to sticking something
in the earth outside. How do I ground the 2nd wire without taking it ===========================================================