which origin

[Buzz-light-bulb]

Hi all

I'm currently doing a condition report on a domestic property in an old peoples home, the c.u is fed from a ryefield board in the switch room protected by 60 amp fuse, outside the property is a dno fuse head and meter. Earthing arrangement is tnc-s, which origin do I report on the cert

 

[Richard Burns]

The supply is as per the DNO service head, then you have a sub main to the ryefield board which then has a distribution circuit that feeds the CU.
The origin is the DNO service head.

 

[Engineer54]

Wherever the N-E connection has been made by the DNO, which will almost always be at the installations incoming service head....

 

[wozz]

would you have fuses before a ryefield or could they be solid links for isolation?

I think the 60 should be recorded as it seems more applicable.

 

[Engineer54]

would you have fuses before a ryefield or could they be solid links for isolation?

I think the 60 should be recorded as it seems more applicable.

Yes, ....they are called service fuses, and NO they wouldn't be links!!

 

[Buzz-light-bulb]

I'm pretty sure the ryefield board is fed from the 3 phase incoming supply then a distribution feed to the property as the c.u tails come out of the property meter

 

[Engineer54]

How about posting up a photo or two, so that we can see exactly what you talking about??