What can happen to the wire if the current exceeds the permissible norm?

If the current in the circuit exceeds the permissible norm, then the wires can overheat, and the insulation covering them can ignite.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.