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
 
yes always record your results also in the departures state the fact the earth is undersize also no rcd as a main switch at 100ma and a 30ma second rcd to protect all other circuits requiring one ,hope this helps ceri
 

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Green 2 Go Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses Heating 2 Go Electrician Workwear Supplier
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

Advert

Daily, weekly or monthly email

Thread Information

Title
TT main earthing conductor on PIR
Prefix
N/A
Forum
Periodic Inspection Reporting & Certification
Start date
Last reply date
Replies
1

Advert

Thread statistics

Created
rs250250,
Last reply from
cegsdj,
Replies
1
Views
1,387

Advert

Back
Top