Do I need to put a difavtomat for underfloor heating on the balcony?

Eugene asks:
Good afternoon! I held a wire from the outlet from the adjacent room to the balcony. From this wire I want to make a wire on the balcony to the light, a wire to a socket and a wire to an infrared floor heating with a power of 1.5-2 kilowatts. The cross-section of wires to the balcony and after the balcony is 2.5 mm2. From the meter, this wiring goes from an RCD to 25 A and a circuit breaker to C25. For security reasons, I want to install Difavtomat on the balcony. Does this make sense, and will there be enough Difavtomat on C25?
The answer to the question:
Hello! If the line is already protected by an RCD and an automatic machine, why put another difavtomat? The point may be, in order to improve security, but not particularly significant. Please note that when the heated floor on the balcony and all the wiring are turned on, it is no longer possible to load the sockets to the line of which the balcony is connected. And a 25A machine cannot be installed on sockets either. Need at 16.
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