电工上岗实操口述(国外英文资料).docVIP

电工上岗实操口述(国外英文资料) The flat connection of 1.1 single stranded copper wires and the insulation of the joints and joints. Wire connection requirement: close contact, small resistance, strong and stable. The low voltage line is used to draw two lines in the street yard. Dictation: the spacing, height, and the poor conductor and metal of the street yard. The length of the street yard: 8 to 12 meters in the town, the largest in the suburbs and the countryside; Height: indoor not less than 2.5 meters, outdoor not less than 3 meters; Distance from bad conductors: not less than the balcony and non-metallic buildings; Minimum distance from metal: metal, metal 1.1 single stranded copper insulated conductors plain and T joints and joints Wire connection requirement: close contact, small resistance, strong and stable, good stability. The low voltage line is used to draw two lines in the street yard Dictation: the spacing, height and the distance between the conductor and the metal object and the distance between the doors and Windows The length of the street yard: 8 to 12 meters in the town, 15 meters in the suburban and rural areas. Height: no less than 2.5 meters indoors, no less than 3 meters outside. Distance from bad conductors: not less than 0.1 meters, from balconies and non-metallic buildings. Minimum distance from metal objects: metal frame, metal eaves, etc., no less than 0.2 meters. Through doors and Windows: no less than 15 centimetres above the doors and Windows, no less than half a meter below the window, no less than 0.7 meters in the horizontal, in order not to prevent the opening and closing of doors and Windows. The installation controls a three-hole socket and a lighting circuit for a screw socket Oral: indoor all sorts of places lighting installation height, wall switch, pull switch installation height, lighting shunt installation height of main switch. Knife switch installation height. General lamps and lanterns is vertical with the ground installation height