Household leakage protection is much suitable? To respond to this problem: this electronic tage senior technical advice at least 16A.
At present, with the development of social economy, people‘s living standards improved rapidly and the improvement of living conditions, more and more home appliances in use, how to protect the personal safety and home appliances is the urgent need to resolve important issues can not be ignored. Among them, the correct selection and installation of leakage protector is a simple economic, safe and reliable means of protection, therefore, in civil residential and electrical equipment protection has been widely used. Household leakage protection in our country is still a new technology, new things, our country has no unified standard, GB50096-99 in the "residential design standards" in the only residential buildings should have total power leakage protection function, but there is no specific regulations on each household. GB13955-92 "leakage protector installation and operation" also does not involve household leakage protection. This obviously can not meet the needs of the country to build a modern harmonious residential quarters. Currently, the market common household leakage protector rated current In specifications are: 16A, 20A, 25A, 32A, 40A, 63A.
Current leakage protector leakage current specifications are: 6mA, 10mA, 30mA, 50mA, 100mA, etc.. Under normal circumstances, in the household leakage protection should choose leakage current of 30mA high sensitivity type leakage protector. The leakage current protector with low leakage current value of 50mA and above can not be used as household leakage protection. But if the choice of lower leakage current value may be wrong, but also affect the normal use.
At present, the installation of household electric leakage protector is the most reliable, the most simple household electrical safety protection measures, but also is a new subject in electrical engineering in China, a manufacturer of the product model, technology is no unified standard. This requires that we must carefully read in the selection of factory production specifications, in accordance with the above parameters and the performance by choice; at the time of installation is to distinguish L line, zero line N and line PE protection, leakage protection try not to install the unipolarswitching in common use; that should pay attention to the maintenance and inspection in operation when used. Only the above aspects have been done in order to effectively guarantee our personal safety.

Power / voltage equals current. For example, with the total power 4KW, then 4000/220=18A.
Required leakage switch rated current greater than the load current. In general the choice of total leakage switch is 1.5 times the load current calculation, 18A*1.5=27A. No 27A leakage switch, so the leakage switch should choose 32A. Leakage action current select 30MA.