case the dryer is required to be operated the optimal performance current of the dryer is supplied to the dryer s 5 in the s 3 step in case that the washing machine is required to be operated it is checked again if the dryer is required to be operated s 6 judged that the dryer is not required to be operated the optimal performance current of the washing machine is supplied to the washing machine s 7 in case that the washing machine and the dryer are all required to be operated after dividing the current limit by each optimal performance current value of the washing machine and the dryer the given currents are supplied to each of the washing machine and the dryer s 8 as shown in fig6 the user may put more emphasis on either of the washing machine and the dryer as necessary in case that the two products are operated simultaneously for that a priority setting step s 12 may be further included between a step s 11 of fig6 corresponding to the step 1 of fig5 and a step s 13 of fig6 corresponding to the step s 2 of fig5 in the step s 12 auxiliary control means may be further provided in the washing machine and the dryer for setting the priority the control means may use the micom in the home server of the home network system for controlling when the washing machine and the dryer are operated simultaneously according to the priority either of the two products is.