Why do I need an electrical panel in the apartment?

Eugene asks:
It is installed in the apartment, I can’t understand what it is and for what?

The answer to the question:
Hello! This is an electrical panel. There are automatic machines in it (yellow flags and black on the right are their handles on / on). They protect the wiring from short circuits and with their help you can turn on or off the voltage in the lighting, outlets or any electrical appliances.
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