Emergency and Legally required circuits run between two buildings

[anbm]

Can emergency panel (NEC 700) and legally required panel (NEC 701) located in one building feed panels in another building?
I.e. there will be more than one feeder runs between two buildings? I believe somewhere in NEC allows only 1 circuit runs between two buildings.

 

[packersparky]

Can emergency panel (NEC 700) and legally required panel (NEC 701) located in one building feed panels in another building?
I.e. there will be more than one feeder runs between two buildings? I believe somewhere in NEC allows only 1 circuit runs between two buildings.

The general rule is one branch circuit or feeder to a building, however there are allowances for more than one feeder for emergency and legally required systems.

225.30 Number of Supplies. A building or other structure that is served by a branch circuit or feeder on the load side of a service disconnecting means shall be supplied by only one feeder or branch circuit unless permitted in 225.30(A) through (E). For the purpose of this section, a multiwire branch circuit shall be considered a single circuit. Where a branch circuit or feeder originates in these additional buildings or other structures, only one feeder or branch circuit shall be permitted to supply power back to the original building or structure, unless permitted in 225.30(A) through (E).
(A) Special Conditions. Additional feeders or branch circuits shall be permitted to supply the following:
(1) Fire pumps
(2) Emergency systems
(3) Legally required standby system