A room contains electrical devices which has a max demand of 10A (may be more than that in the future).
The mains cable from the electric panel (distribution board) is 4 mm2 which can handle current up to 23A.
The sub-cables from the main cable to the wall outlets are 2 mm2 which can handle current up to 15A.
Each outlet is rated for 16A.
What should be the current of the automatic circuit breaker? and Why?
If the panel contains 5 breakers and each breaker is rated for 20A.
Is the value of the main breaker 5*20A = 100A?