Household electricity is single-phase electricity, and household appliances are counted as two kinds of electrical equipment, mainly household lighting, washing machines, refrigerators, household electricity and weak electricity. Generally, there will be no large electrical equipment at home.
220a.c. Under special circumstances, the average user does not consider that there will be 380a.c..
Household weak current is generally 12V DC, 24 AC, but household weak current is generally taken from 220V AC power supply.