[Elecraft] Elecraft Digest, Vol 69, Issue 40

[tom kenville]

Folks,

It is best not to rely on water pipes for any type of grounding.

Many homes have various combinations of steel, copper, plastic, etc. piping.
These are electrically discontinuous, often with purposefully inserted
"galvanic isolators".

The best ground is a proven, direct ground.
Bonding of all electrical grounds to the common feed-point ground is required.

You risk too much with the chance of holding a mike and touching
another piece of non-ham equipment.

tom -- w6tjk

From: David Christ <radioham at mchsi.com>
> Subject: Re: [Elecraft] Grounding negative side of power supply?
> To: elecraft at mailman.qth.net
> Cc: elecraft at mailman.qth.net
> Message-ID: <p0624080fc77e08e1b6ae@[10.0.1.3]>
> Content-Type: text/plain; charset="us-ascii" ; format="flowed"
>
> Another commonly used ground is the water system.  Check your water
> meter.  If there is a heavy jumper around it, chances are the
> grounding wire from the service entrance connects to the cold water
> system.
>
> David K0LUM
>
> At 7:17 AM -0500 1/21/10, Jim Miller wrote:
>>In many US homes the utility ground is found inside the home as it is a
>>ground rod embedded in the poured concrete foundation immediately below the
>>power panel.
>>
>>73
>>
>>jim ab3cv
>
>
thanks and 73's
Tom Kenville  --  W6TJK