The main 20-meter 6-square aluminum wire and indoor 2.5-square copper wire can safely carry electrical appliances with a total power of no more than 5000 watts. The total power of these appliances in your home is about 500 watts, and the total power after air conditioning is less than 2500 watts. The newly replaced wires are abundant and absolutely safe. Please feel free to use it, there is no need to replace it.