R
rs250250
Hi
This is my first post and I was hoping someone out there could impart some pearls of wisdom
The majority of older TT systems I have come across have main earthing conductor between 2.5 and 4mm.
On testing these the readings are always well below the 200ohms required but do I need to record this
on the PIR as a Code4 as it does not comply with current regs?
As far as I understand Buried earthing conductors not mechanically protected need to be 16mm.
Would I be right to say that as long as the RA of the electrode is sufficiently low enough I do not need to do any thing else?
TT systems always perplex me as the earths are always so small!
Cheers
This is my first post and I was hoping someone out there could impart some pearls of wisdom
The majority of older TT systems I have come across have main earthing conductor between 2.5 and 4mm.
On testing these the readings are always well below the 200ohms required but do I need to record this
on the PIR as a Code4 as it does not comply with current regs?
As far as I understand Buried earthing conductors not mechanically protected need to be 16mm.
Would I be right to say that as long as the RA of the electrode is sufficiently low enough I do not need to do any thing else?
TT systems always perplex me as the earths are always so small!
Cheers
