How about ordering just one unit then test it out at your place before going in bulk?
I already did that a long time ago now im ready to go in bulk
If you have already had it for a while, how come you don't know its consumption figure? By testing I didn't mean to just plug-and-play.
Certainly don't want to be rude and I'm not intending it so but if you are needing to ask on a forum how many miners you can have in a warehouse of a particular size, perhaps you need to think smaller for the near-term. Not sure what #'s you ran before. You will need to put more details in your post before you can get any useful info back.
My questions would be before I asked any electrician to come out in no particular order....
What is your budget?
What number of miners are you thinking total?
What size (aprox) warehouse are you looking at?
Will you be setting this up/monitoring/servicing this by yourself?
What is your electric cost going to be? Commercial rate or what?
How do you plan to provide cooling/dehumidifying etc.?
Security?
If I had more time to think of important questions I could prob come up with a few dozen more.
When you say, "I already did that a long time ago now im ready to go in bulk", what number of miners were you running? Were you running them at home?
Depending on your answer to the number of miners you ran before, you may want to think of running 10-20 in a space that can be expanded and (accommodate electrical expansion as well), before thinking in terms of 100 or whatever amount you are considering.
There are just too many questions that need to be solidified before thinking of putting out so much money and committing yourself to what could be a money-pit at the outset.
Also, if you want some more detailed info/feedback from here, you will need to provide much more info to get some reasonable/reliable/helpful answers.
I'm not saying any of this out of experience. The most miners I have run at once are seven, four S9's and three S7's. I'm just saying this as an IT guy who knows that anything being planned on a large scale needs to be planned for thoroughly and accounting for any and every possibility or problem. Because, as you probably know, anything that can go wrong, may go wrong all at the same time. LOL
Good luck.
P.S. Again not intending to sound rude, but if you are concerned about having to pay an electrician for just a visit to your potential site, perhaps you may need to reevaluate or down-size your plans.