Here is a question regarding the supply to a normal household.
The CU is wired in TN-S (as the earth is separated from the neutral bar), but back at the Elec Boards transformer - would I be correct in saying that the Neutral is connected to Earth (therefore TN-C-S)?
With that in mind, when the Installation Cert is signed up, do you enter supply characteristics as TN-S (as found at the house CU) or do you enter TN-C-S (as this is technically the supply from the E board) ?
The CU is wired in TN-S (as the earth is separated from the neutral bar), but back at the Elec Boards transformer - would I be correct in saying that the Neutral is connected to Earth (therefore TN-C-S)?
With that in mind, when the Installation Cert is signed up, do you enter supply characteristics as TN-S (as found at the house CU) or do you enter TN-C-S (as this is technically the supply from the E board) ?