- Reaction score
- 21
Hi all,
Hope you're keeping well
I'm currently wiring a small commercial premises. 3 phas incoming supply, 16sq cables
As it is in an urban area with a busy pedestrian street on both sides of the building I had to drive the earth rod just inside the door of the premises. However it is located about 30m from the distribution board. Could anyone tell me how I would calculate whether I would need to run a 16sq earth cable or if 10sq would be sufficient. I'm conscious if a large fault current were to flow and 10sq being adequate.
Building is also neutralised. Which brings me to my next question. If a premises is neutralised, why the need for an earth rod.
Appreciate any advice here. Thanks
Hope you're keeping well
I'm currently wiring a small commercial premises. 3 phas incoming supply, 16sq cables
As it is in an urban area with a busy pedestrian street on both sides of the building I had to drive the earth rod just inside the door of the premises. However it is located about 30m from the distribution board. Could anyone tell me how I would calculate whether I would need to run a 16sq earth cable or if 10sq would be sufficient. I'm conscious if a large fault current were to flow and 10sq being adequate.
Building is also neutralised. Which brings me to my next question. If a premises is neutralised, why the need for an earth rod.
Appreciate any advice here. Thanks
