Eh?
You said that the reason I had an Ra of <70 ohms on a 2' rod could be due to how close it was to the Tx.
You said that the reason I had an Ra of <70 ohms on a 2' rod could be due to how close it was to the Tx.
What Sizecable And Which Consumer Unit For A Tt System
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D Skelton
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©Honorary Essex Boy™
To be honest a lot of these debates could be avoided if the basic rules of science are applied.
Electricity and its function have not changed since they were first acknowledged.
My computer is filled with various calculus and formula so remote from my understanding that I seldom understand my own work. For instance I have a formula for calculating the resistance of concrete!! One day I may be glad that I have it, but I really do doubt it.
This debate should get you all looking back at the basics, it is from those basics that informed reference can be drawn from.
Do we need an earth?
If so why?
If we need it and we know why, what is the best way to provide it?
If we provide it, can we sustain its use and effectiveness?
How can we prove its effectiveness?
You also need to do some research into earthing, and why some very good engineers prefer TT installations above all others.
As for stability of any installed earth electrode, we are given values (ball park figures) that would confirm without calculation the stability of the earthing.
Ra testing is nothing like Re testing.
One uses an independent supply, the other utilises the suppliers supply and is effected by parameters provided by that supply.
If I struggle to understand anything I tend to draw a line or path, I find that drawing it out helps me to visualise the path required to understand the whole circuit.
This may be a complex problem or even trying to understand a simple wiring diagram for two way switching.
I am trained and qualified to assess and size any TX for any situation, I have not used that training for years, so if asked now I would have to go over my notes and ask!
Such is the nature of our work, I know a lot, but know very little.
I like forums, they allow me to level out with like minded people, some are misinformed, more by bad training than aptitude. They do however provide food for thought, and allow a better debate than what would be achieved if they knew everything.
Electricity and its function have not changed since they were first acknowledged.
My computer is filled with various calculus and formula so remote from my understanding that I seldom understand my own work. For instance I have a formula for calculating the resistance of concrete!! One day I may be glad that I have it, but I really do doubt it.
This debate should get you all looking back at the basics, it is from those basics that informed reference can be drawn from.
Do we need an earth?
If so why?
If we need it and we know why, what is the best way to provide it?
If we provide it, can we sustain its use and effectiveness?
How can we prove its effectiveness?
You also need to do some research into earthing, and why some very good engineers prefer TT installations above all others.
As for stability of any installed earth electrode, we are given values (ball park figures) that would confirm without calculation the stability of the earthing.
Ra testing is nothing like Re testing.
One uses an independent supply, the other utilises the suppliers supply and is effected by parameters provided by that supply.
If I struggle to understand anything I tend to draw a line or path, I find that drawing it out helps me to visualise the path required to understand the whole circuit.
This may be a complex problem or even trying to understand a simple wiring diagram for two way switching.
I am trained and qualified to assess and size any TX for any situation, I have not used that training for years, so if asked now I would have to go over my notes and ask!
Such is the nature of our work, I know a lot, but know very little.
I like forums, they allow me to level out with like minded people, some are misinformed, more by bad training than aptitude. They do however provide food for thought, and allow a better debate than what would be achieved if they knew everything.
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#30
With regards to your 2 foot rod, a million factors could be affecting that, such as how close it is to the TX.
In Red
Just saying
in fuschia
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it got boring ages ago, I tried to brighten it up with a bit of colour
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Ive just finished a bottle of Theakstons old Peculiar and a packet of mini cheddars....
They weren't boring,,,,,
I'm going to open another bottle now!
:coat
They weren't boring,,,,,
I'm going to open another bottle now!
:coat
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theakstons
of the official of the perculiar of Masham....if I recall?
mimi cheddars? FFS Man Up and do the Full size option......5 of Jimmy Savills points if you open a pack where ALL the little golden cheesey temptresses are intact
just envious
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