In the process of using electricity, although people have noticed that the size of the cross-sectional area of the material of the power cord has an impact on the safe use of electricity, they often pay insufficient attention to the use of insulating tape for the connectors. Now the laying of power lines is becoming more and more complicated, all under wooden floors, in walls, in partitions, and in wet underground or water. If the insulating tape is used improperly, electrical leakage will occur and endanger personal safety. Therefore, we must use insulation tape correctly. The power cord connector is divided into "+" word connection method, "-" word connection method, "T" word connection method and so on. The connector should be entangled, smooth and without burrs, otherwise, before the wire head is disconnected, it should be lightly pressed with wire pliers, and then wound around the pressure port, and then swing left and right, the wire head will be disconnected at the joint very comfortably. If the joint is in a dry place, firstly wrap two layers of insulating black tape, then two layers of plastic tape, then stretch about 200% with insulating self-adhesive tape, wrap two to three layers, and finally wrap two layers of plastic tape.
Because using plastic tape directly has many disadvantages: plastic tape is prone to misplacement and glue opening for a long time; when the electrical load is heavy, the connector is heated, and the plastic tape is easy to melt and shrink; the power connector is squeezed against each other in the junction box, and the connector has burrs, which is easy. Injury plastic tape, etc.
These hidden dangers will directly endanger personal safety, cause short circuits, and cause fire. The above situation does not occur when using insulating black tape. It has certain strength and flexibility, can be wrapped around the joint for a long time, and is compacted and shaped by the influence of time and temperature. It will not fall off and is flame retardant. Furthermore, wrapping it with insulating black tape and wrapping it with plastic tape can prevent moisture and rust.
Of course, the insulating self-adhesive tape also has defects. Although it has good waterproof performance, it is easy to break. Therefore, it is necessary to wrap two layers of plastic tape as a protective layer. The insulating self-adhesive tape of the joint and the joint is non-sticky to each other and has better performance.