电线无破损，电源线与设备的接线必须用螺丝压紧；电缆不得使用单层绝缘电线

The wires are undamaged, and the connection between the power cord and the equipment must be tightened with screws; the cables must not use single-layer insulated wires and cables; the connectors between the power sources must be wrapped with insulating tape; the incoming and outgoing wires of the mobile distribution box and switch box are in accordance with the specifications It is required to use rubber sheathed insulated cables. The electric construction machinery and equipment at the construction site must be connected to the PE line and achieve "one machine, one gate, one box, one leak". The so-called "one machine, one gate, one box, one leak" means that each electric machine must use its own dedicated switch It is strictly forbidden to directly control two or more electromechanical equipment by one switch. Each switch in the box should be affixed with a label with the number and name of the electrical equipment. The wiring terminals in the box should be firmly crimped, and virtual connection is strictly prohibited. When using the submersible pump as required, the switch box or the leakage protector in the switch box must strictly meet the requirements

The wires are not broken, the wiring between the power cord and the equipment must be screwed, the cables must not use a single layer of insulated wire cables, the connection heads between the power supplies must be wrapped with insulation tape, and the entry and exit of mobile distribution boxes and switch boxes must be used as a rubber sheath insulation cable as required by specifications. Construction site electric construction machinery and equipment must be connected to THE PE line and do "one machine, one box, one leak", the so-called "one machine, one box, one leak" means that each electromechanical equipment must use their own dedicated one switch box, a switch electrical appliance, a leakage protector, strictly prohibit a switch directly control two and above electric machinery and equipment. Each box switch should be labeled with the electrical device number and name. The terminals in the box should be firmly creded and the virtual connection is strictly prohibited. When using a submersible pump as needed, it must be equipped with a switch box or a leak protector in a switch box.

There is no damage to the wires, and the wiring between the power line and the equipment must be pressed with screws; the single-layer insulated wire and cable shall not be used for the cable; the connector between the power supply must be wrapped with insulating tape; the incoming and outgoing lines of mobile distribution box and switch box shall be rubber sheathed insulated cable according to the specification requirements. The electric construction machinery and equipment on the construction site must be connected with PE line and "one machine, one switch, one box and one leakage" shall be realized. The so-called "one machine, one switch, one box and one leakage protector" means that each electric mechanical equipment must use its own special switch box, one switch appliance and one leakage protector. It is strictly forbidden to directly control two or more electric mechanical equipment with one switch. Each switch in the box shall be labeled with the number and name of the electrical equipment. The wiring terminals in the box shall be firmly crimped, and virtual connection is strictly prohibited. When the submersible pump is used as required, the switch box or leakage protector in the switch box must strictly meet the requirements