David Woolley wrote:
In IEE terms, the PME system is TN-C-S. The older system is TN-S.
There is a rare configuation (TT), used for rural overhead supplies,
where each house has its own earth electrode, but these are not
connected to the neutral, which is only earthed at the sub-station.
TT i
Don Wilhelm wrote:
residential AC power in the US - All exposed metallic components of the
electrical wiring system must be connected to the electrical safety
ground. There is an earth ground connection at the service entry point
- which is to be the only direct ground point in the system (ye
Very true David. "Earthing" to the mains ground is the proper way to do it.
If there's a separate ground rod for any reason, such as an RF ground, most
codes require that it be connected to the mains earth ground as well.
It's worth making sure the mains ground is connected too! I've encountered
a
David,
Having to study the National Electrical Code prior to building and
wiring my house, I can talk a bit about the safety grounding for
residential AC power in the US - All exposed metallic components of the
electrical wiring system must be connected to the electrical safety
ground. The
Ron D'Eau Claire wrote:
That's why a connection to earth ground is recommended and important. It's
often pointed out that it doesn't matter if everything is grounded as long
as it's at the same potential. That's true, but connections to the earth are
usually all around us, often in unexpected pla
[mailto:[EMAIL PROTECTED] On Behalf Of Darrell Bellerive
> Sent: 24 November 2007 17:12
> To: elecraft@mailman.qth.net
> Subject: Re: WARNING! WARNING! WARNING! (was [Elecraft] ESD recommendation)
>
> What about touching the circuit board pads with my Weller soldering sta
Ron D'Eau Claire wrote:
> To be sure I'm not being fuzzy-headed, I checked the Hakko on my bench and
> its tip is certainly connected directly to the mains ground (< 1 ohm).
Well, fair point, if you somehow manage to come into contact with 110v
AC AND make good contact with the tip of your solderi
: WARNING! WARNING! WARNING! (was [Elecraft] ESD recommendation)
Check the resistance to earth - it may have a resistor in series already.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Darrell Bellerive
Sent: 24 November 2007 17:12
To: elecraft@mailman.q
] ESD recommendation)
What about touching the circuit board pads with my Weller soldering station
that has a grounded tip?
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That's why a connection to earth ground is recommended and important. It's
often pointed out that it doesn't matter if everything is grounded as long
as it's at the same potential. That's true, but connections to the earth are
usually all around us, often in unexpected places.
It's the same as th
What about touching the circuit board pads with my Weller soldering station
that has a grounded tip?
On Friday 23 November 2007 10:52, Gary Hvizdak wrote:
> YOU ABSOLUTELY POSITIVELY SHOULD NOT GROUND THE CHASSIS while
> assembling
>
> your K3 or anything else that has ESD sensitive componen
At 07:21:12 EST 2007 on Fri Nov 23, David Ferrington, M0XDF wrote ...
You need
:
:
* a ESD wire - to connect the rig chassis to your bonding point
(some may say this isn't absolutely necessary)
--
All,
YOU ABSOLUTELY POSITIVELY SHOULD NOT GROUND THE CHASSIS while assembling
your K3 or
I have had that esd wrist strap and mat for years
and the K3 was an obvious place to start using them...
bill
At 07:51 AM 11/23/2007, Julian G4ILO wrote:
On Nov 23, 2007 12:48 PM, Dave G4AON <[EMAIL PROTECTED]> wrote:
> You must use anti-static precautions. It's foolish to assemble a
On Nov 23, 2007 12:48 PM, Dave G4AON <[EMAIL PROTECTED]> wrote:
> You must use anti-static precautions. It's foolish to assemble a $2500
> radio only to damage it for the sake of perhaps $25 worth of anti-static
> products.
Even I, notorious tightwad that I am, have forked out on an
anti-static ma
You must use anti-static precautions. It's foolish to assemble a $2500
radio only to damage it for the sake of perhaps $25 worth of anti-static
products. Mats and wrist straps must be tested for continuity before
use, a pin through the mat will usually give a good enough connection
for a multi-
Yes you do have to go to the effort of ESD projection - without it, you may
just get lucky and not blow a component - but then you've just waited months
for your K3 and why risk it? ESD stuff (like everything else) over in the US
is so damn cheap anyway.
I can't suggest where to buy - Radio Shack
Hello all -- Like everyone else I'm looking forward to a K3 showing
up sometime before I become a SK...hi hi...(third production
run...ugh)...but I'm trying to get prepared so everything will be
ready to go when the kit gets here. I don't have any special "ESD"
protection and was wondering wha
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