Nutral Outlet Wiring The neutral wire goes all the way back to the source, which is usually a pole top transformer or a generator. The wire can run many miles from that grounding rod -- and can have a potential difference. Having a separate ground and neutral has lots of safety benefits. Current should travel through that neutral and ground current should be zero.
Nutral Outlet Wiring Fluke -A1-II Volt-Alert AC Non-Contact Voltage Tester: Amazon.com: Fluke 117 Electricians True RMS Multimeter: Amazon.com:
Nutral Outlet Wiring The black wire (hot wire) coming in from the left is the source power. It is tied together with a wire going to the switch and the black wire going to the outlet. The red wire (switched hot wire) going to the outlet, wires into the other side of the switch and the white wires (neutral), tie together to complete the return side of the circuit.
Nutral Outlet Wiring If you want to use smart switches and don't have a neutral wire in your switch box, you can hire an electrician to run a neutral wire between the light fixture and the switch. You can also have an electrician rewire the switch and light fixture, which is potentially more expensive.