Over head supply PME possible?

[oharaf]

Anyone know if DNO's will provide PME from an overhead supply? or if it is possible?

I have had to install an earth rod already, but ideally the customer would like a 'supplied' earth (so would I, ground is terrible!!!!!)

 

[1john]

Yes, but not always, the DNO have to have ties the neutral down to earth on each rod, a good way to tell if it is possible is to see if the neutal on the pole feeding the property in question has been tied down to earth.

 

[aptsys]

The poles should have a PME warning plate if they are likely to support PME.

 

[maguire]

Not wanting hijack the OP's question but would this tie down take the form of a copper strap to earth, I see this a lot here and I assumed it was a lightning earth ? without giving it any thought
Dev

 

[Lectrician]

Usually a double sheathed cable, 25 or 35mm. It it crimpted at the base of the pole to a hard drawn bare conductor which is run in a trench usually.

An LV earth tape is always run at an angle to an HV.

If no trench is open or possible, a rod may be used, but fairly rare (especially in my area).

Not every pole needs bonding down - every 3rd typically, although more if works are being carried out.

I have only ever had difficultly getting PME where the property is served by a long run of poles serving the one property, or where the final drop from the pole to the house is two singles rather than a concentric. In these cases it is fairly expensive.

 

[niceguy235uk]

Indeed, if the drop is one single concentric then there is more than likely PME available.

This could be checked at the CU by switching off, removing bonding and performing a Ze.

 

[Lectrician]

Indeed, if the drop is one single concentric then there is more than likely PME available.

This could be checked at the CU by switching off, removing bonding and performing a Ze.

No it couldn't!