Every master wants to know... how to calculate the cable cross-section for a particular load. You have to deal with this when wiring in a house or garage, even when connecting machines - you need to be sure that the selected power cord will not smoke when you turn on the machine...
I decided to create a calculator for calculating cable cross-section by power, i.e. The calculator calculates the current consumed, and then determines the required wire cross-section, and also recommends the closest circuit breaker.
Power cables GOST 31996—2012
Calculation of the cable cross-section by power is carried out in accordance with the tables of the normative document GOST 31996-2012 “Power cables with plastic insulation”. In this case, the cross-section is indicated with a current reserve to avoid heating and fire of the wire operating at the maximum current. I also introduced a coefficient of 10%, i.e. another 10% is added to the maximum current for quiet operation of the cable
