Got back to the office today to hear of a strange problem some of our guy`s were called to...any idea`s?
A house converted to two flat`s,one up,one down.
Each flat has been given it`s own supply TNC-S and each flat has a consumer unit,metal clad with 100A 30mA main isolator.
When the tennent`s upstairs uses their shower and it`s been running 5 mins or so the RCD trips AND takes the lower flat`s RCD out too.
All circuit`s were tested (in both flat`s) and result`s came up satisfactory.
We put it down to a supply problem,damaged neutral maybe but the local DNO came out today and said no problems could be found.
ANY IDEAS ???
A house converted to two flat`s,one up,one down.
Each flat has been given it`s own supply TNC-S and each flat has a consumer unit,metal clad with 100A 30mA main isolator.
When the tennent`s upstairs uses their shower and it`s been running 5 mins or so the RCD trips AND takes the lower flat`s RCD out too.
All circuit`s were tested (in both flat`s) and result`s came up satisfactory.
We put it down to a supply problem,damaged neutral maybe but the local DNO came out today and said no problems could be found.
ANY IDEAS ???