Talk about series rating, I have seen a strip mall where in the diner, there was a 100 amp. service panel that was fed from a 100 amp disconnect next door in the liqueur store (LS). The diner's panel was a Fed-Pac and the LS was a Square D. There was a piece of faulty equipment in the diner which was tripping the main in the LStore. The big problem was the Diner oped at 6:00 AM and the store at 10:30 AM. So when the breaker tripped, The diner was without power to the store owner came in. The first few times it tripped, the store owner would come in and open early for the diner, after 5-10 times the store owner wouldn't come in early anymore.
