Ground connection

  • Thread starter Thread starter xCal
  • Start date Start date
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xCal

Hi group,

I think this is relevant to anyone, so I post this:
I need to test or verify that my ground conection is good,
sugestions?. ( I detected some electricity problems very near my computer )
Thanks in advance, Carlos
 
Go to your local hardware store and buy an outlet tester, it'll tell you if
it's wired correctly and if ground is ok.
 
Yeah! These are uually "affordable" and very easy to use. They are just like
a standard three (3) pronged plug with various electronics/lights to test the
outlet. Depending on the lights, these are a code which tells you status of
the outlet:

Such statuses:

Ground - Good
Ground - Open
Polarity - Reversed
Polarity - Neutral
Status -- OK!
 
Hi, thanks for your answers,
I just realized that using a simple voltimeter, if I connect to any point
( two posibles )
I should read +110 volts a.c. or -110, because my current is 220volts a.c.
Carlos.
 
AC is alternating current, there isn't a +110 or -110. you have 220
across the 2 legs or 110 from either leg to neutral or ground.
 
Oh, yes, there is no plus or mines, but 110 yes,
from ground to each other point. Carlos
 
Hi again group

Is it supposed that an UPS detects possible failures on ground conections
and tries to correct those failures?, or simply an UPS works badly, too?,
or, it doesnt matter it cares about 220volts a.c?, does it depend on the UPS
model, or what ?

In simple words, do UPS protect me too for errors on ground conections,
thanks very much in advance

Carlos.
 
yes, very much depends on the UPS model. If you have read the manual and
it doesn't answer the questions you have, I suggest you contact the
manufacturers tech support.
 
A UPS cannot fix a physical ground or wiring problem, that would require an
electrician.
 
Hi Dave, for example, if your ground is at 0.5 volts, perhaps your UPS,
detects it and passes to your PC 0 volts, including the pc current
discharges. This would help yto protect your computer. I think Bob is rigth,
the next step is to consult UPS people. Carlos.
 
You need to know that the black wire at every outlet is the
hot wire, the whiter wire is neutral and the green [or bare]
wire is ground. A simple $5 tester can check this with the
lights. A DVOM on an AC outlet will NOT test the correct
connection. But even the outlet tester does NOT verify the
whole system is really properly grounded at the junction
box.

Typical home wiring uses the water pipes as ground, but the
soil types and moisture content, the metal in the pipes and
any corrosion or loose connections can mean that the ground
has a high resistance.

Some power companies will check your system ground, but
you'll need to hire a qualified electrician to do any
repairs. There are electricians who know about electronic
requirements.



| Hi, thanks for your answers,
| I just realized that using a simple voltimeter, if I
connect to any point
| ( two posibles )
| I should read +110 volts a.c. or -110, because my current
is 220volts a.c.
| Carlos.
|
| "xCal" <[email protected]> escribió en el
mensaje
| | > Hi group,
| >
| > I think this is relevant to anyone, so I post this:
| > I need to test or verify that my ground conection is
good,
| > sugestions?. ( I detected some electricity problems very
near my
| > computer )
| > Thanks in advance, Carlos
| >
|
|
 
No.
| Hi again group
|
| Is it supposed that an UPS detects possible failures on
ground conections
| and tries to correct those failures?, or simply an UPS
works badly, too?,
| or, it doesnt matter it cares about 220volts a.c?, does it
depend on the UPS
| model, or what ?
|
| In simple words, do UPS protect me too for errors on
ground conections,
| thanks very much in advance
|
| Carlos.
|
| "Bob I" <[email protected]> escribió en el mensaje
| | > Correct!
| >
| > xCal wrote:
| >
| >> Oh, yes, there is no plus or mines, but 110 yes,
| >> from ground to each other point. Carlos
| >>
| >> "Bob I" <[email protected]> escribió en el mensaje
| >> | >>
| >>>AC is alternating current, there isn't a +110 or -110.
you have 220
| >>>across the 2 legs or 110 from either leg to neutral or
ground.
| >>>
| >>>xCal wrote:
| >>>
| >>>
| >>>>Hi, thanks for your answers,
| >>>>I just realized that using a simple voltimeter, if I
connect to any
| >>>>point ( two posibles )
| >>>>I should read +110 volts a.c. or -110, because my
current is 220volts
| >>>>a.c.
| >>>>Carlos.
| >>>>
| >>>>"xCal" <[email protected]> escribió en
el mensaje
| >>>>| >>>>
| >>>>
| >>>>>Hi group,
| >>>>>
| >>>>>I think this is relevant to anyone, so I post this:
| >>>>>I need to test or verify that my ground conection is
good,
| >>>>>sugestions?. ( I detected some electricity problems
very near my
| >>>>>computer )
| >>>>>Thanks in advance, Carlos
| >>>>>
| >>>>
| >>>>
| >>>>
| >>
| >>
| >
|
|
 
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