So here is the problem, I major in electrical engineering and my sister works in a small furnishing company and recently the company got an offer to furnish a hotel with 25 rooms. And she asks me if I can design the electric circuit for that hotel.In school I learn electric machine and how to control it, programming and so on. So i never actually designed a circuit for a room, let alone a hotel.. But I think that should not be too difficult,it's basically a circuit of delivering energy. But then again,the main concern here is to ensure SAFETY. This should be done by experienced electrician. But i think this would be a very good opportunity to gain experience to learn how to do it. What should i consider? Consideration: 1. Wires how to choose different lines? 2. Topology so 25 five rooms should run parallel 3. Protection instruments(need to understand them and how to choose them) 4. Ground(I don't understand this very well, how Ground a device will protect us, and it's difference with neutral line) 5. Convention colors for different wires and what else? 6. Three phase or single phase? 7. How to organize all those wires What else to consider? Or it there any guides that i can follow? Please help me!