Any electrical circuits for consumers of 30A and above need careful calculations. Most of the household appliances with a consumption of 30A are not intended for short-term operation and have an inductive winding, which means that the duration of heating of the live wires due to the flow of electric current will be significantly higher than when using low-power consumers. Also, due to the inductive winding, the starting currents will be 3-5 times higher than the currents of the nominal operating mode. In this regard, it is very important to make the correct calculation, taking into account the length of the cable and the heat-resistant properties of the cable insulation in accordance with the national electrical code.
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