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does a scope need ac mains ground?

 
 
1jam
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      02-28-2012, 10:24 PM
I just found out, much to my surprise, that none of the outlets where I have
my oscilliscope are grounded. Would this affect performance?


--
Praise God from whom all blessings flow
 
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Jamie
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      02-28-2012, 11:09 PM
1jam wrote:

> I just found out, much to my surprise, that none of the outlets where I have
> my oscilliscope are grounded. Would this affect performance?
>
>

Most likely not however, I would careful about using your scope on
hot chassis.

Jamie



 
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krw@att.bizzzzzzzzzzzz
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      02-29-2012, 12:18 AM
On Tue, 28 Feb 2012 13:24:08 -0900, 1jam <(E-Mail Removed)> wrote:

>I just found out, much to my surprise, that none of the outlets where I have
>my oscilliscope are grounded. Would this affect performance?


It's certainly not safe but it's not going to affect the performance.
 
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krw@att.bizzzzzzzzzzzz
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      02-29-2012, 03:04 AM
On Wed, 29 Feb 2012 12:09:03 +1100, John G <(E-Mail Removed)> wrote:

>on 29/02/2012, 1jam supposed :
>> I just found out, much to my surprise, that none of the outlets where I have
>> my oscilliscope are grounded. Would this affect performance?

>
>And how come you have 3 prong sockets with no ground connection?
>
>Sureley thats against any jurisdictions code in this day and age. :-?


There are exceptions (grandfathered structures with a GFCI) but they should be
marked as ungrounded.
 
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David J
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      02-29-2012, 10:18 PM
It is generally beter to float the scope (no AC mains Gnd). If you want to
test mains voltage with your scope if the probe is referenced to mains Gnd -
good by probe!!!

"1jam" <(E-Mail Removed)> wrote in message
news:4f4d5408$(E-Mail Removed)...
>I just found out, much to my surprise, that none of the outlets where I
>have
> my oscilliscope are grounded. Would this affect performance?
>
>
> --
> Praise God from whom all blessings flow



 
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Phil Allison
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      02-29-2012, 10:53 PM

"David Jerk"

> It is generally beter to float the scope (no AC mains Gnd).


** No way - that is very dangerous for the operator.


> If you want to test mains voltage with your scope if the probe is
> referenced to mains Gnd - good by probe!!!


** Absolute bullshit.



.... Phil


 
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Jamie
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      02-29-2012, 11:27 PM
Phil Allison wrote:
> "David Jerk"
>
>
>>It is generally beter to float the scope (no AC mains Gnd).

>
>
> ** No way - that is very dangerous for the operator.
>
>
>
>>If you want to test mains voltage with your scope if the probe is
>>referenced to mains Gnd - good by probe!!!

>
>
> ** Absolute bullshit.
>
>
>
> ... Phil
>
>

look out! Two down unders going at it!


Jamie


 
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Phil Allison
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      03-01-2012, 12:01 AM

"Jamie the Radio Ham TROLL "
>
> look out! Two down unders going at it!
>


** Err - what make you so sure " David J " is an Aussie?




.... Phil


 
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Chiron
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      03-01-2012, 05:17 AM
On Thu, 01 Mar 2012 12:58:00 +1100, John G wrote:

> Yes who said he was from the better part of the world? He sounds like a
> Yank candidate for a Darwin award to me.


"Better?" Isn't Australia where they sent all the criminals that they
didn't wind up hanging? Where they have foot-wide spiders that want to
kill you? And where God put together things from spare parts left over,
and wound up with the platypus?? I mean, they named a whole *town* after
Darwin...

Sure, we Yanks have our problems, but we're not doing so badly for a
primitive country. There is every hope that we might have civilization
here eventually.

--
If God had wanted us to be concerned for the plight of the toads, he would
have made them cute and furry.
-- Dave Barry
 
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Chiron
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      03-01-2012, 08:37 AM
On Thu, 01 Mar 2012 18:44:33 +1100, John G wrote:

> We only had to take convicts after you lot could not handle the job. lol
> then we advanced quickly.
> No death penalty, Metric measure like the better part of the world, a
> debt to GDP ratio far and away better than most.


All true. Still, I refer you to this authoritative article:

http://www.theonion.com/articles/nat...ng-okay,27444/

Anyway, Australia is one of the very few places I wouldn't mind living.
All those other places have too many foreigners.

--
Truth has no special time of its own. Its hour is now -- always.
-- Albert Schweitzer
 
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