Usually, a few electromagnetic ovens can be opened together with the electricity in the house
You'd better drive two times, because there are other household appliances at home。Look at your home fuse, as well as your electromagnetic oven power size, and generally open a 4, 5 can not do it
If the meter is 20A, it can only be opened at the same time two induction cooker, and if it is 40A, then open 4 units are no problem. 2000W induction furnace, current 9.1A. A severe overload will burn out a line or an electric meter.
Take a look at your electric meter. It is clear that the meter is fitted with the line.