1, the angle and distance of two-hole plug and three-hole plug are different. To insert the two-pin plug into the three-hole hole, it is necessary to twist the two feet of the two-hole plug into a figure of eight, which is easy to twist the plug and damage the socket. It is not dangerous to do this occasionally in an emergency. There are also two-pin plugs in the market, and the two pins can be converted into a figure of eight, and both two-hole and three-hole jacks are universal.
2. It is not dangerous to plug in the hole on the left and the hole on the right, and most sockets with single-row and straight-row jacks are normally powered on. However, for some sockets with horizontal jacks, it may be impossible to get electricity normally because the live wire or the zero wire are inserted at the same time.