How many amps of leakage protection is suitable for home circuit ?
There are many types of leakage protectors, including a wide range of parameters, which need to be selected in combination with the distribution of household appliances. Choosing leakage protector is also a big problem. So, what's suitable for home leakage protector?
1. What is the suitable size of household leakage protector
It is generally recommended to use a leakage protector with a rated action current of 30mA, because in the home installed circuit, the leakage protector can trip automatically in case of line leakage or fault, and has the function of protection, so it is more appropriate to choose 30mA. If the leakage protector with a rated action current of 50mA is selected, the sensitivity is low, and it is easy to have wrong operation.
2. What parameters should be considered when purchasing leakage protector
A. Leakage action breaking time: this parameter refers to the time from the time when the line breaks down to the time when the leakage protector detects and trips. In principle, the less time is the better. However, the greater the current flowing through the human body, the greater the harm to the human body, so it is recommended to choose 30mA.
B. Operation time of leakage protection: the operation time of leakage protection device on the market is mainly divided into three types, one is fast type, the operation time is required to be no more than 0.1s, the other is timing type, the operation time is required to be no more than 0.1 to 2 seconds, the last is inverse time type, and the operation time is also different according to different operation current.
C. Non action current of leakage protection: when the line is running, the leakage protector has the allowable leakage current. In this range, the leakage protector will not act, which is a parameter easily ignored by nonprofessionals, but in fact, it is very important to ensure the normal operation of the line and avoid false tripping.
The above is about how large and suitable the household leakage protector is, and what parameters need to be considered when purchasing the leakage protector. I hope it can help you.