Size feeders, cable and transformers to the load and run the network studies behind them yourself, including load flow, voltage drop, short circuit, protection coordination, and EMT studies of switching, energization and islanded transients, as models that rerun for each sites layout and block count. Youve designed MV distribution down to the hardware, including metal-clad switchgear, transformers, cable and duct bank ampacity, and grounding, and defended those choices against NEC, NFPA 70E and IEEE requirements with engineers of record and AHJs.