There are three types of electrical insulating tapes:
1. Insulating black tape
It only has the function of insulation, but it is not flame retardant or waterproof, and it has now been gradually phased out, and only in some civil buildings is still used in electrical buildings.
2. PVC electrical flame retardant tape
It has three functions: insulation, flame retardant, and waterproof, but because it is PVC material, it has poor ductility, and the joint cannot be wrapped very tightly, and the waterproof performance is not very ideal, but it has been widely used now.
3. High-pressure self-adhesive tape
It is generally used in higher voltages, because of its good ductility, it is better than the second type in waterproofing, so people also apply it in the field of low voltage, but because its strength is not as good as PVC electrical flame retardant tape, usually these two are used together.