In life, it is often encountered that the rubber cover is hot or the wire body is hot, the main reasons are as follows:
1. Poor contact between the plug and the 86 socket, coupled with large load power, causes the plug line to heat. Such as electric kettle, electric iron, etc.
2, the new plug inside the wire loose, this is due to the production process rough and other reasons.
3, the new plug line is used for a long time, the insulation performance is reduced (or the plug line is loose).