This book is a mathematical model of an Electrical Distribution in a high-rise building with the National Electrical Code – NFPA 70 – requirement. There are many ways to estimate and calculate the electrical loads for designing an electrical distribution system in a super-tall building. The author presents one of these methods in a quick and easy-to-understand format that benefits all experience levels in the electrical engineering field. The book introduces a new calculation method and provides step-by-step instructions for designing electrical distribution. Integration of the Medium Voltage in design assists in satisfying the voltage drop requirement in the electrical distribution system. This book compares the process between the early stage of a project (Schematic Design), where we have only assumption and anticipation, to the last part of the project (Construction Document), where there are actual electrical loads.