Earthing braid - capacity

[Cremeegg]

Can anyone tell me the capacity of earth braiding sweated onto the lead covering to the incomer. Not a very exact measurement but the braid is about 1.5mm thick and 20mm wide.

 

[plugwash]

that would make it about 30mm² Seems like more than enough for a domestic earth.

anyway if it is sweated onto the sheath it should IMO be considered as belonging to the DNO and not your concern

 

[Lectrician]

Why do you want to know? It is not your part of the installation. The braid will be terminaed into a henley block, and from here onwards is your responsibility.

Put your 16mm from that henley to your board, and record 16mm on the EIC form. Ignore the braid - it is the DNO's

 

[Cremeegg]

Thanks - I wasn't going to touch it - yes it is terminated but into a MET - from which I have run 16mm and entered on MWC. Agreed its the DNO's - just looks very insubstantial.

 

[JohnD]

it is bound to be less than 30mm, because it is not solid. It is made part of metal and part of air.

I would guess about 50% metal. So, about a 16mm sq equivalent which is adequate. It will overheat less under heavy load because it has better exposure to the air.

 

[Lectrician]

Who cares? It aint ours. The DNO fit it, and terminate to a henley for us to connect to.