(1) The electrical equipment in the distribution box at the construction site must first be installed on the metal or non wood insulated electrical equipment installation board, and then the whole shall be fastened in the distribution box to electrically connect the metal plate with the distribution box.

(2) Various electrical appliances in the distribution box and switch box shall be fastened on the mounting plate according to the specified position without inclination and looseness. Moreover, the distance between electrical equipment and around the equipment and the Board shall meet the requirements of relevant process standards.

(3) The action zero line in the distribution board and switch board shall be connected with the terminal board and separated from the terminal board of the protection zero line.

(4) The wires in the distribution box and switch box shall be connected with insulated wires. The model and cross section of the wire shall strictly follow the cross section indicated on the temporary electricity drawing. The connecting wire shall be insulated copper conductor with a cross section of not less than 2.5 mm2. Wire joints shall not be loose and live parts shall not leak.