Here in the UK, all metal has to be cross-bonded.
This means that all pipes and metal which can be touched by an occupant must
be connected to the domestic wiring ground according to the regulations
which are set by the Institute of Electrical and Electronic Engineers.
If a central heating system is installed with plastic piping, I understand
that the individual radiators have to be bonded to a central point rather
than relying on the conductivity of the water.
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Colin McDonald
Sent: 27 November 2013 06:23
To: [log in to unmask]
Subject: Re: Re-station ground
is a stainless steel countertop generally grounded to the house electrical
system?
73
Colin, V A6BKX
--------------------------------------------------
From: "Steve Dresser" <[log in to unmask]>
Sent: Tuesday, November 26, 2013 2:59 PM
To: <[log in to unmask]>
Subject: Re: Re-station ground
> Colin,
>
> I'd caution against using the grounding of the electrical outlets as a
> station ground. I lived in a house where the electrical ground of the
> outlets had 150 volts which I measured between it and a stainless steel
> counter in the kitchen. It turned out that the house's electrical system
> wasn't grounded to anything in the known universe.
>
> Steve
>
> ----- Original Message -----
> From: "Colin McDonald" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, November 26, 2013 16:31
> Subject: Re: Re-station ground
>
>
>> you already have a ground between the tuner and the radio via the coax
>> shield...
>> You already have full chassis ground through the ground prong on the AC
>> power.
>> However, to avoid RF hot spots on the chassis of your equipment, it is
>> advisable to use another earth ground of some kind for your
>> equipment...either via a ground rod, or to the main electrical ground of
>> the
>> house such as the city side of the water meter on the cold water pipe, or
>> connected to the ground rod used by the electrical of the house if there
>> is
>> one.
>> Also, having a separate ground rod just for the station is good because
>> that
>> can also be used for both RF and electrical ground and will help in the
>> case
>> of a nearby lightening strike etc.
>> You need to use a ground bus, and have a wire from each piece of
>> equipment
>> connected to that common bus...do not daisy chain the grounds together.
>> In
>> other words, your grounding has to be paralel, not series.
>> If it's electrical ground, the wire length doesn't matter at all...but if
>> you are going after an RF ground, the length of the ground wire may, if
>> you
>> are using a non-resonant antenna, or latter line or long wire and a
>> tuner,
>> effect the tuning of the antenna.
>>
>> Often an additional ground for the station equipment is not necesary as
>> the
>> AC ground takes care of it, but sometimes you may need it if you find you
>> are having issues with RFI in your audio, or excessive noise on receive
>> or
>> if you are causing RFI to other electronics in the house or with your
>> neighbors.
>>
>> 73
>> Colin, V A6BKX
>> --------------------------------------------------
>> From: "Mike Ryan" <[log in to unmask]>
>> Sent: Tuesday, November 26, 2013 1:10 PM
>> To: <[log in to unmask]>
>> Subject: Re-station ground
>>
>>> So if I have a ground wire running from my ATU's ground stud to the back
>>> of
>>> the rig's ground stud, considering my rig has a built in power supply
>>> and
>>> a
>>> 3 prong plug, this will be fine?
>>>
>>> Mike
>>
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