3 Way Switches Explained How to wire 3 way light switch

US residential electrical systems course, in this course you’ll gain a comprehensive understanding of the electrical infrastructure in American homes. This course covers the essentials, starting with an overview of the 120/240V dual-voltage system used across the U.S., and explains how it powers everything from lighting to large appliances. You will learn about key components, such as electrical panels (breaker boxes), circuit breakers, and fuses, and their role in distributing electricity safely and efficiently. The course delves into residential wiring practices, covering various types of circuits used in homes and the importance of grounding and bonding to prevent electrical hazards. You’ll explore installation techniques for outlets, switches, and light fixtures, with special attention to GFCI (Ground Fault Circuit Interrupter) and AFCI (Arc Fault Circuit Interrupter) devices that provide added safety in areas prone to moisture or potential electrical faults. Practical sections offer hands-on skills for wiring, troubleshooting, and inspecting circuits, as well as understanding code requirements and safety standards for residential electrical systems. By the end of this course, you’ll be equipped with the knowledge and skills to manage residential electrical systems confidently, whether you're planning upgrades, repairs, or ensuring compliance with safety regulations.