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It's pretty common at event locations, event purpose generators and such. There are PDUs meant specifically for such purposes. Many have five prong 208Y/120v outlets and PDUs distribute them appropriately so the phases are reasonably balanced. (ph1,ph2,ph3, neutral, ground).
The older dryer outlets assumed neutral to be ground, however newer ones are 4 prong with ground having its own pin. You do not connect ground and neutral as that's already done inside the panel.
Best thing to do is obtain a proper UL certified PDU off the shelf meant for splitting one type of outlet into normal 120v outlets. Next best is to have an electrician build such a thing.
The older dryer outlets assumed neutral to be ground, however newer ones are 4 prong with ground having its own pin. You do not connect ground and neutral as that's already done inside the panel.
Best thing to do is obtain a proper UL certified PDU off the shelf meant for splitting one type of outlet into normal 120v outlets. Next best is to have an electrician build such a thing.