Anyone know now building electrical leakage circuit breaker inside the action time should be less than how much?

1) the protection of direct contact electrocution direct contact electrocution hazards are relatively large, resulting in serious consequences, so we must choose a higher sensitivity of the leakage circuit breaker, power tools, mobile electrical equipment and temporary lines, should be installed in the circuit of the action current of 30mA, the action time within 0.1s of the leakage circuit breaker. For residential houses with more household appliances, it is best to install it after the household energy meter.　If it is easy to cause secondary injuries once electrocuted (such as working at height), an earth leakage circuit breaker with an action current of 15mA and an action time within US should be installed in the circuit. For electrical medical equipment in hospitals, earth leakage circuit breakers with an action current of 6mA and an action time within US should be installed.　(2) Indirect contact electrocution protection Indirect contact electrocution in different places can cause different degrees of personal injury, so different places should be installed in different leakage circuit breakers. For easy electrocution of the hazardous places, the requirements of the leakage circuit breaker with higher sensitivity. In the wet place than in the dry place of electrocution risk is much greater, generally should be installed for the action current of 15-30mA, action time within 0.1s of the earth leakage circuit breaker. For electrical equipment in the water, should be installed. Current 6-l0mA, action time within the US leakage circuit breaker. For the operator must stand on metal objects or metal containers in the electrical equipment, as long as the voltage is higher than 24V, should be installed with an action current of 15mA or less, the action time within US leakage circuit breaker. For fixed electrical equipment with voltage of 220V or 380V, when the shell grounding resistance is below 500fZ, the single unit can be installed with an action current of 30mA and an action time within 0.19 of the earth leakage circuit breaker. For rated current of 100A or more large electrical equipment or power supply circuit with multiple electrical equipment, can be installed with an action current of 50-100mA earth leakage circuit breaker, the grounding resistance of the electrical equipment in the following 1000, can be installed with an action current of 200-500mA earth leakage circuit breaker.