If the Live and Neutral connections are reversed, the switch or fuse will instead be placed on the Neutral conductor. Reversing these two conductors at an outlet or junction box introduces a serious wiring fault that compromises the integrity of the entire electrical system. Electrical devices. In electrical wiring, the live wire carries current from the power source while the neutral wire returns current to complete the circuit. A quick Google search can be boiled down to: "Bad things, do not do this. " Where do you live? Are your sockets polarized?Connecting the live and neutral wires the wrong way in a plug can lead to several issues that can adversely affect both the device being used and the user's safety. While the mistake might appear minor, the repercussions can be both operationally disruptive and potentially dangerous.