Red Seal Industrial Electrician Practice Exam

Which of the following is a typical voltage level for industrial electrical systems?

1. 110V

2. 120V

3. 230V

4. 350V

The correct answer is: 120V

In industrial electrical systems, typical voltage levels can vary widely depending on the specific type of equipment and application. Among the provided options, 120V is commonly used, especially in North America, for powering equipment and lighting in general industrial settings. This voltage level is often referenced for standard circuits that support general machinery, control systems, and less heavy-duty applications. It is crucial because it is a standard household voltage that can be found in many environments, making it easily accessible for various equipment. The other voltage levels presented may have specific applications, such as 110V often being a historical reference to nominal voltage levels, while 230V is more typical in residential and commercial settings, particularly in parts of Europe. The 350V level is less common in typical industrial applications, making it a less likely candidate for a standard voltage in this context. Thus, 120V as a response aligns well with the typical voltage used within many industrial scenarios.