Determining if an electrician has done the wiring correctly involves several steps. Look for neat, organised wiring, properly installed outlets, switches, and junction boxes. All wires should be colour-coded according to local electrical codes. You can also use a multimeter to test for the correct voltages and polarities. Circuit breakers should be appropriately labelled, and there should be no signs of overheating, like melted insulation or burn marks. Finally, professional electricians should provide you with certification to show that the work complies with local building codes and regulations. If in doubt, you can hire a licenced inspector for a third-party evaluation.