Re: Surge / Ground / Lightning

? <spamfree@[EMAIL PROTECTED]
> ?????? ??? ?????? 
news:hkfu149a5vrit5hmv0diutsv7daiqor67i@[EMAIL PROTECTED]
> On Mon, 5 May 2008 19:21:16 +0300, "Tzortzakakis Dimitrios"
> <noone@[EMAIL PROTECTED]
> wrote:
>
>>
>>Ï "Tantalust" <Tantalust@[EMAIL PROTECTED]
> Ýãñáøå óôï ìÞíõìá
>>news:RPidnaZzhcrV0oXVnZ2dnUVZ_hadnZ2d@[EMAIL PROTECTED]
>>> "NB" <nobuyout@[EMAIL PROTECTED]
> wrote in message
>>>
news:b53f2fef-00bd-40d0-9ac1-c69b3bcadf52@[EMAIL PROTECTED]
>>>> Who is W_TOM and why has he appeared in every single thread that has
>>>> contained those keywords since 2001???
>>>
>>> He an obsessive-compulsive disorder victim, apparently driven by some 
>>> kind
>>> of bizarre fetish involving ground rods.
>>>
>>>
>>What kind of ground rods? I prefer steel core, copper clad ones:-) I
even
>>have the special heavy hammer>
>
> I'm on 2000' of sand, and at the moment, my house earth is the copper
>
2000'? I am only 5'10":-)

>water pipes, but the water corp keep adding plastic bits here and
> there, so I don't really trust it. I was going to hammer in a 20'
> length of 3/4" copper pipe under a large tree which gets the drain
> from my grey water. Probably the best I can do.
>
Perhaps you should get a proper earthing electrode, with a spiked end and
a 
stell core? It would be really difficult to hammer 20' of 3/4" copper
pipe. 
They are not that expensive.
> I'm not a full bottle on earth loops yet so i don't know about leaving
> the water mains connection still connected.
The earth loops matter only in electronic circuits, like amplifiers and
the 
like. In electricity, the play no role, in fact they reduce even further
the 
earth resintance.
> What's the best way to test an earth?
> I heard once that a large electric radiator (fire) connected between
> active (hot) and the earth will glow as per normal if the earth has
> good capacity. Perhaps a current comparison between the earth return
> and neutral return would be more informative?
>
Although the neutral is at zero potential, still carries a large current. 
The earth not. Since the neutral point of the LV side of the local 
substation is earthed, for the electricity "is all the same" between
neutral 
and earth, depending on the neutral earthing system.
>

-- 
Tzortzakakis Dimitrios
major in electrical engineering
mechanized infantry reservist
hordad AT otenet DOT gr