Let's not even talk about looping at the switch. Now then, what do we have? Loop in and loop out to the next room; loop to shaver socket; 3C&E to fan; switch drop to light switch; supply to luminaire. That's 6 CPCs, which won't fit in the back-box terminal, and the neutrals so a couple of Wagos. You need a back-box the size of a bucket!
Let's not even talk about looping at the switch. Now then, what do we have? Loop in and loop out to the next room; loop to shaver socket; 3C&E to fan; switch drop to light switch; supply to luminaire. That's 6 CPCs, which won't fit in the back-box terminal, and the neutrals so a couple of Wagos. You need a back-box the size of a bucket!
