Hi all,
A friend has had some pricing for installing some new heating on an off-peak tariff, which will involve a new sub-main from the (new) meter to the new heating CU position.
They are being advised that as part of this work the existing installation (Sockets, lighting etc. only) needs to be provided with an RCD at the meter box position. This existing sub-main is only being touched due to needing to provide isolation to both sub-mains (whole house) at the same time, and because of the change of meter.
I questioned why there was additional work than quoted 2 years ago, and they advised it was because this new RCD requirement for the sub-main was part of the 18th edition regulations.
Is it correct? I've not seen such reference when searching for changes in the 18th.
It bothers me a little, as I though installing an RCD at the start of a sub-main was a poor choice, as it results in all circuits becoming isolated in the case of a fault. In this case the existing CU is all RCBO.
Any guidance appreciated!
A friend has had some pricing for installing some new heating on an off-peak tariff, which will involve a new sub-main from the (new) meter to the new heating CU position.
They are being advised that as part of this work the existing installation (Sockets, lighting etc. only) needs to be provided with an RCD at the meter box position. This existing sub-main is only being touched due to needing to provide isolation to both sub-mains (whole house) at the same time, and because of the change of meter.
I questioned why there was additional work than quoted 2 years ago, and they advised it was because this new RCD requirement for the sub-main was part of the 18th edition regulations.
Is it correct? I've not seen such reference when searching for changes in the 18th.
It bothers me a little, as I though installing an RCD at the start of a sub-main was a poor choice, as it results in all circuits becoming isolated in the case of a fault. In this case the existing CU is all RCBO.
Any guidance appreciated!