Wiring method of meter box

After the cable enters the house, a control box can be installed, and a three-phase leakage protector can be installed in the box; One circuit breaker; One load knife switch. (its function is that the leakage protector can disconnect the line leakage fault; the circuit breaker can disconnect the line short-circuit current; the load knife switch is used for line maintenance, and there is an obvious disconnection point between the point part and the maintenance part.) then enter the meter box from the load knife switch. The control box shall be as close to the meter box as possible. If the connector in the box is copper wire, it should be connected with copper nose; if it is aluminum wire, it should be connected with aluminum nose; The three-phase load in the meter box shall be balanced as much as possible, and all joints shall be connected reliably.