ARW wrote:

Alan wrote:

Arc fault detection has been introduced
They are flawed devices, so have not been made compulsory.

But it is the thin edge of the wedge.

I had assumed an AFDD would be a whole house device similar to how RCDs
were initially introduced before split rail CUs, but the ones I could
see are combined MCB+AFDD devices, just when RCBOs seem to be getting to
a reasonable price ...