Electrical systems and technologies encompass a wide array of devices and infrastructure related to the generation, distribution, and utilization of electrical energy. These systems are essential components of modern life, powering homes, industries, and the global economy. Electrical systems include power generation methods, such as coal, natural gas, nuclear, renewable sources like wind and solar, and more. They also consist of extensive transmission and distribution networks that deliver electricity to end-users. Inside buildings, electrical systems involve wiring, circuits, outlets, and electrical panels to safely and reliably distribute power for lighting, appliances, and electronic devices. Electrical systems also incorporate advanced technologies like automation, energy management, and smart grid systems to enhance efficiency, sustainability, and control. These systems are a cornerstone of modern infrastructure, powering our daily lives and driving technological advancements.