What does medical three cabinets mean?

Electrical three boxes refers to the first level of secondary and tertiary distribution box, or called the total distribution box, sub-distribution box, switch box.

Distribution box is a sea of data on the parameters, generally constitutes a low-voltage forest according to the electrical wiring, the requirements of switchgear, measuring instruments, protective appliances and auxiliary equipment assembled in closed or semi-closed metal cabinet or screen banner, constituting a low-voltage distribution box. Normal operation with the help of manual or automatic switch to connect or break the circuit.

The purpose of the distribution box: reasonable distribution of power, convenient to open and close the circuit operation. There is a high level of safety protection, can visually display the on state of the circuit.