That depends on what gauge your incoming supply cable is.

If your supply can support it, swapping it out isn't that big a deal. (Note : Do not try if you have no experience or qualifications with power systems)

You have two db box? Each 32amps two already 64amp

I got two storage heater 6 Ac and 1fridge. I don't see any problem. Need to know the max running current each and the concurrent running equipments.

2 heater and 3 Ac assume Ac is 1.5hp is about 10000watt additional fridge (depend the size) maybe 1500watt so total about 11500watt unless he got 2000w light if not is not an issue. Of course all this will be issue if owner switch on all the time.

Proper cabling is critical. In coming 63amps it will able handle 63 for short period of time. Most important the cable need to handle the load.

dont you have a bigger and clearer pic?

12kW would be around 50+ amps which is way over what the protection device can handle at 32 amps.

Proper cabling is important, but you'll have to size your protection (be it circuit breaker or RCD correctly), also water heaters should always have an RCD instead of a standard SP/DP circuit breaker to prevent death by electrocution. The last thing I want to do is die naked.

One should also note the size of ground wiring and staking and resistance required for the load being used. If you supply cabling is 20 mil and can carry 150 amps oso no use if you neutral conductor is small and your neutral block is tiny.

Electricity isn't just about current.

never assume when it come to electricity...
2hp is only around 1.5kw and not 10kw..

and theres a "faktor pelbagai " for electrical calculation...

example: 1 unit of 20A MCB and be use for up to 3 unit of 13A S/S/O..

MCB is miniature circuit breaker, usually alongside RCCB (refer to ur pictures)


S/S/O is switch socket outlet, usually the 13A 3pin socket at your wall (wall socket)

Single 32 Amps will not go up to 12kw, but with two 32amp he can go up to 12kw without issue if load are properly distributed.

Std practice is having same wire thickness for Neutral and Live.

Than again, if you notice incoming from TNB have 3 Live wires (RYB), and one Neutral wires. Every wonder why Neutral don't need the total thickness of 3 Live wires?