ECN Forum Forums Code Related Discussion NEC & other Code issues (Part 2 ) 12470 Disconnect & Switch Question

On the load side of theses (two) 2500 KVA 12470 / 277-480 volt transformers. The runs into the Building Allow how many disconnect Switchs between them. I got my Idea wanna know yers . 2 , 6, 12??? I want other ideas without where I;m getting mine in the code.
Yoopers