The best way to find out if your house has a neutral wire or not is to check the colors of the wires in the circuit. In the US, white-colored wire represents neutral wire, and if there’s any white color wire available in the circuit, then it means that your circuit has the neutral wire. You can also determine it by establishing how old your house is. If it’s built before the 1980s, then there are great chances that your home doesn’t have the neutral wire in the lighting circuit switches. If it was built after the 1980s, then it should have the neutral wire in the switches. As always, we recommend consulting a qualified electrician if you are unsure what you are doing.