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Almost, it's just a little better to change to a 40 one. Because some things have a higher starting current. Multiply the total power by about the same!
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1 point smaller. 8KW is ok if it is not used at the same time.
No! The switch should be selected in such a way that the main switch is larger than the shunt switch, so that the main switch will not be jumped in the event of a fault and affect other electrical equipment.
3800 kilowatts?
Do you know what the concept of 3800 kilowatts is? >>>More
Three-phase motor, 380V, 4 square copper wire is sufficient. >>>More
It is necessary to add up the power of various electrical appliances you want to use, and then consider a certain redundancy value, which is not easy to estimate purely from the area.
With a three-phase electric steamer 12 kilowatts, calculate its current so that it is calculated as 12000 (unit amps. Power can be transmitted with BV 4mm conductors.