What is the required clearance of a Utility Transformer

Location
Georgia
Occupation
Construction Project Manager
I am working on an EV Charging installation project in Chattanooga, TN at an apartment complex. We are pulling from a 120/240 utility transformer that sits about 10' from where we plan to install our first pedestal. Ive been told that we need to be outside of a 10' clearance of the transformer but was curious what is the standard clearance for utility transformers? Is it up to the utility company or is there an overall standard?
 
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