What is the national standard requirement for the main power switch of the elevator?

① Independent power supply, can cut off the elevator all the power supply circuit of the main switch. (Except for the following power supply circuits) ② The switch has the ability to cut off the maximum current under normal use of the elevator. ③The switch should not cut off the following power supply circuits: a. car lighting or ventilation b. car roof power outlets c. machine room and pulley room lighting d. power outlets in the machine room e. elevator shaft lighting f. alarm devices ④The switch should have stable disconnect and close position. ⑤ The main switch should be easily and quickly accessible from the entrance of the machine room.