Earth rod
- Thread starter skinneroo
- Start date
Sponsored Links
Yes.
Why do you want to?
Why do you want to?
He has some spare time
And a hammer.He has some spare time
Sponsored Links
- Joined
- 27 Jan 2008
- Messages
- 25,635
- Reaction score
- 3,035
- Location
- Llanfair Caereinion, Nr Welshpool
- Country
It is common to have an earth rod with a TN-S/TN-C-S(PME) system, where it depends on if running on DNO or Local power as to which system it is.
Only the link to earth to neutral needs to be switched.
However, one has to consider with a loss of PEN how much current will flow. With a 23 ohm earth rod, 230/23 = 10 amp will flow, this is not a problem, most single earth rods looking at more like 60 ohms. However, a ham radio operator with an earth mat of 2.3 ohm, having a 100 amp flow, the earth cables must be able to take 100 amps.
When complexes are connected to a PME supply, it is common for the earth to connect through a massive resistor. Where I worked about the size of a transit connect, so there is a limit to current flow with the loss of the PEN.
Only the link to earth to neutral needs to be switched.
However, one has to consider with a loss of PEN how much current will flow. With a 23 ohm earth rod, 230/23 = 10 amp will flow, this is not a problem, most single earth rods looking at more like 60 ohms. However, a ham radio operator with an earth mat of 2.3 ohm, having a 100 amp flow, the earth cables must be able to take 100 amps.
When complexes are connected to a PME supply, it is common for the earth to connect through a massive resistor. Where I worked about the size of a transit connect, so there is a limit to current flow with the loss of the PEN.
And a hammer.
Do you have RCDs covering all your circuits - otherwise the earth rod is unlikely to clear shorts and faults.
You say adjacent the garage but it doesn't really matter where you put it - subject to ground conditions.
I wouldn't bother but then some of my circuits don't have a CPC (earth wire).
You say adjacent the garage but it doesn't really matter where you put it - subject to ground conditions.
I wouldn't bother but then some of my circuits don't have a CPC (earth wire).
Yeah, all covered by rcds, just thinking that it would be safer.
Been watching electrical shenanigans on YouTube and tales of the pme system failing .
Can't deny that it would be.
Yes, there was talk of all installations having to have an earth rod.
That wouldn't cost much.
That's right.
Sure, but, after you have hammered it into the ground, how will you test the rod to ensure that it will be effective in the event of a PME failure?
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
