SERVING POWER FROM AN ADJACENT BUILDING

[jonno]

We are looking at serving a remote freezer buildings refrigeration Air Units from an MCC in an adjacent building to centralize the controls & due to a lack of available space in the freezer building to site an MCC. Both buildings have their own dedicated switchboard and service transformer served via a primary network ring feeder to the site.
Is there any reason we should not serve power from an adjacent building, if both buildings have their own dedicated service transformer and switchboard ?

All replies are appreciated.

 

[kwired]

We are looking at serving a remote freezer buildings refrigeration Air Units from an MCC in an adjacent building to centralize the controls & due to a lack of available space in the freezer building to site an MCC. Both buildings have their own dedicated switchboard and service transformer served via a primary network ring feeder to the site.
Is there any reason we should not serve power from an adjacent building, if both buildings have their own dedicated service transformer and switchboard ?

All replies are appreciated.

How you going to get around 225.30?

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)

Similar wording in 230.2 for number of services, but I don't see prohibition of having one building supplied by one feeder as well as one service.

Connect buildings together to make them one and you solve the one feeder issue but open a new can of worms with more then one service issues.

 

[jonno]

Many thanks for your response, I do believe this would present an issue.

 

[kwired]

Sounds to me like you need to build on an electrical room and run a feeder to it from the existing service within the building. The room typically will not cost anywhere near what your equipment inside does so I don't see the room being all that big of an issue - but management doesn't always see the bigger picture either.

Had a light industrial client that was adding an air compressor - not a huge compressor for some places but definitely much more then a portable compressor. Unit was maybe 8 feet wide 12 feet long and 7 feet tall. Owner could only think about all the wasted space in one area of the building that was between 12 and 25 feet above the floor and that is where it needed to go. His maintenance man thought he should just build a "lean to" on side of building as it would cost much less then building support structure to handle this load, let alone getting the unit up there and also the needed stairways to access it.:roll: