Replacing an existing consumer unit is notifiable to the LABC under Part P of the Building Regulations.
Are any of the following activities notifiable:
1. Installing an accessory (such as a DIN rail mounted time switch, relay, or kWh meter) on an existing circuit.
2. Moving a circuit from an MCB + RCD to an RCBO, or vice versa.
3. Installing a DIN rail mounted PSU or transformer - does this class as an extra circuit even if it is connected to an MCB used with an existing circuit.
