Grounding Electrode Not Required?

[Trey4U]

The exception to 250.32A says ?A grounding electrode shall not be required when a single branch circuit, including a multiwire branch circuit, supplies the building or structure and the branch circuit includes an equipment grounding conductor for grounding the normally non-current-carrying metal parts of equipment?.

I have a structure that has ten single phase MLO panels each with two 30/2 breakers for 20 clothes dryers. Each panel has a multiwire branch circuit going to a distribution panel remote from the structure. Since there are ten multiwire branch circuits wouldn't the exception not apply and a grounding electrode be required for each panel?

 

[iwire]

Each panel has a multiwire branch circuit going to a distribution panel remote from the structure.

Seeing as these circuits sound like they supply a panel they are feeders so the exception does not apply regardless of the number.

 

[infinity]

I have a structure that has ten single phase MLO panels each with two 30/2 breakers for 20 clothes dryers. Each panel has a multiwire branch circuit going to a distribution panel remote from the structure. Since there are ten multiwire branch circuits wouldn't the exception not apply and a grounding electrode be required for each panel?

A separate structure is not permitted to be supplied by 10 different branch circuits unless it meets the conditions in 225.30(A) which your installation does not.