Range hood wiring diagrams generally include information about the necessary voltage for the unit, which components require electrical wiring, and the colors of the wires that lead in and away from those components. Wiring diagrams for specific models vary by brand.
One example of a range hood wiring diagram details the electrical components of the Broan model number 113023. This wiring diagram, available as of October 2015 on the Sears Parts Direct website, details four areas of the range hood electrical system. The household power source of 120 volts and 60 hertz of alternating current is transmitted into the hood via three wires, colored black, white and green. The first two of these wires are the in and out of the flow of electricity, while the green is attached as a ground wire. These three wires move into the rough-in kit wiring box, passing through into the fan system. There, each wire connects with a similarly colored wire from the blower motor. Past the fan system, the three wires attach to the lights, light controls, motor speed controls and thermostat.
Although wiring diagrams illustrate range hood electrical connections, the website Ask The Electrician cautions against do-it-yourself wiring of this nature. The site rates this application skill level as intermediate to advanced, indicating that a licensed electrician or contractor familiar with building codes should handle these tasks.