In MA we are required to 2-HR rate our emergency feeders and to separate normal power panelboards and emergency panelboards, i.e. can't have both in the same room. Electric rooms where emergency panelboard and transformers are located are required to be 2-HR rated rooms.
Is this a code in Maine or any other state?
It's a good practice but not sure if it is required.
Is this a code in Maine or any other state?
It's a good practice but not sure if it is required.