I would like to ask a few questions on this subject.
If I want to start a small minning operation, let's say with like 100 miners or even 500 miners, I bet there are tons of calculations to perform on wattage, amperage, air flow to keep the warehouse relatively cool, obtain licences, hire specific people to "validate" electrical installation, to "validate" the A/C system, to put up a contingency plan regarding fires, like extinguishers and other means of security, hire security for the location, etc, etc.
Is there some more formal information on this? I know this will depend a lot on the country one is intending to start the mining operation, but still, I wanted to know about some generic guide or so about what might be needed for such operation!
There could be. I'm sure there is a slew of people out there willing to charge for this information. Biggest thing from the start, cut the AC equation that will burn all profits. It's all about taking in cooler air on one side and removing the same mass of warm air from the otherside with minimal recycle.
Electrical, anything to that scale in almost every jurisdiction I can think of would require you to have someone liscenced pull a permit for the build. It will require some back and forth with your energy provider as well to ensure you can pull that load from the grid.
The calculations are fairly easy for the rest. Depends on the miner and their stated draw. Then once you figure out your voltage you will know amperage per device then it's a game of efficiently laying them out to spread the load, while maintaining the 80% safety rule for max amps.
This would really just be a superpowered data center, so that could be a good thing to look into to get an idea. Some older threads here also have images from when businesses started up. Maybe try searching old service threads for "hosting services". Best of luck