Elevator distribution manual, there are specific instructions, refer to the following main points:

An elevator load classification to be compliant, according to normative judgment belongs to a load is still two loads.
2, each elevator should install separate electrical isolation and protection appliances.
3, inside the elevator car and the elevator car lighting and ventilation outlet on the top of the power cord and alarm devices require a separate electrical isolation and protective devices, the power from the main power switch in the elevator before achieved.
4, a number of loops into the line of the engine room, the line should be set for each loop electrical isolation.