A solid grasp of core electrical design topics is essential for developing safe, efficient, and compliant building systems. Key areas include load estimation, power distribution, circuit protection, grounding, lighting, and integration with architectural and mechanical systems. Designers must follow standards such as IEC 60364, NEC, IEEE, and BS to ensure safety and performance. With growing emphasis on smart technologies, sustainability, and system interoperability, electrical engineers must also address energy efficiency and low current systems. Mastery of these topics enhances design quality, reduces risks, and supports coordination, ensuring electrical infrastructure meets modern building requirements and project goals.