hi, for concealed, 32A uses 6mm2, 45A uses 6mm2 or 10mm2?

for washer+dryer, aircon, 4mm2 is enough (dedicated wire)?

for kettle, if i want to use same wiring for sockets for Kettle & Vent fan is 4mm2 enough? i know kettle should be running on it's own line but don't have extra spare slot in db.

if i want to tap existing socket to add more, i use 2.5mm2 wires? connection use Terminal Block or something else?

if i want to connect 2 wires inside bathroom above ceiling, what is the safest way to do it since normal blocks don't have any sort of cover (in case water leak).

the 32A & 45A switch is for Oven & Hob using existing DB (need to mod DB for higher power?), i know it's overspec but i see some folks here did 45A for both oven & hob.

i know those standalone Ceramic Hob + Oven combo requires 32A so i though put 45A for future coz i don't know whether power requirements will get smaller or bigger for future designs. Normal Ceramic Hob & Oven usually use what, 20A switch? i think the electrician will laff when they see 45A & 10mm2 wires.

the kettle socket will loop with the fan socket coz i don't have extra MCB to have dedicated wire just for the kettle socket. i rather have dedicated wire for the washer/dryer since it not just run on longer time but uses more power?

regarding the looping, if the socket infront damage, will it affect the sockets behind it?

This post has been edited by advocado: Nov 4 2017, 09:36 PM

do you mean a new db for everything in the kitchen (hob/oven/sockets?). is it normal practice? can you tell me the pros of having a 16mm to a new db compared to pulling individual wires from the existing db? i can't think of a good place for the new db without more hackings compared to running the wires from the db as i don't see any good space for the db around the socket & switch locations. the closest location would be somewhere in between the db & kitchen, which means i don't really save much on the wires but it will be inside a small room so is that safe?

the 20A switch i was just asking if standard hob accept that, if not, still got 32A & 45A switch available in market. if direct wire to db it would mean i can't totally turn off the switches without turning off from the db.

btw it's just an apartment not big house. i know double storey houses usually have a db on each level.

on the looping, i'm just asking if in future the socket infront breaks, will it affect the whole loop behind it?