Supply Protective Device Characteristics - Flats

[jat01]

Hi , I am have recently installed a new shower circuit in a flat which is in an block of around 20 flats.

The main service head is a 3 phase 4 wire that goes into a sub board that distributes the flats.

What information needs to go on to the EIC supply Characteristics? (by the way sub board is locked)

Advice appreciated.

 

[telectrix]

Ze, PFC, size of supply conductors, rating of supply fuse/s. voltage. no of phases. it's all boxes on the EIC.

 

[jat01]

I understand where this information needs to go, but what information the main service head details or the details of the fuses in the sub distribution board ( which is locked)

 

[telectrix]

IMO, the supply characteristics are to be determined at the point of supply entering the building i.e. at the head and main isolator for the whole building. readings at the sb-main ( Zdb etc.) should also be taken.