have 6mm wire that used to feed my old cooker in the old kitchen that has become a utility room now. this was connected to 32 RCD at the CU. the cooker has been removed and i am using the circuit to feed the immersing element of DHW cylinder via 2.5mm flexi wire. the immersing element is 3kw and hence I replaced the 32 RCD with 16 RCD at the CU. now i am adding an electric oven next the DHW cylinder which will be fed from the 45amp wall plate that is currently feeding the immersing element. The oven is 3.6kw and will be connected via 6mm cable .
do i need to upgrade the RCD at the CU to 32 or just leave it at 16. in another words, can the 16 RCD at the CU feed both DHW cylinder and the oven?
do i need to upgrade the RCD at the CU to 32 or just leave it at 16. in another words, can the 16 RCD at the CU feed both DHW cylinder and the oven?