stand alone MCC building

[wild1]

hello

i am helping with the design of a Motor Control Center (MCC) building. The building 42' x 46' stand alone building dedicated just for the MCC.
it is 300ft from any other structure and in a rural setting. Where do I find the code for stand alone electrical buildings? Specifically the fire rating needed for the building material.

Thanks

Tom

 

[Dennis Alwon]

The fire rating would be a building code I believe not an electrical code and I also don't think there is a separate code section for stand alone electrical buildings

 

[just the cowboy]

just curious

just curious

hello

i am helping with the design of a Motor Control Center (MCC) building. The building 42' x 46' stand alone building dedicated just for the MCC.
it is 300ft from any other structure and in a rural setting. Where do I find the code for stand alone electrical buildings? Specifically the fire rating needed for the building material.

Thanks

Tom

Is this an explosion proof job with the MCC 300' away. I see lots of voltage drop issues with that as a starting point.

 

[wild1]

Thanks for the replies

Actually that should have read 100' any structure.

There is no explosion proofing involved.

There is mainly open storage for distillers grain near this MCC. So i am guessing it will be suppling power to conveyor.

From building codes and the NEC, Electrical Rooms need a 2 hour fire rating unlesss there are sprinklers.

the question then came up since this is a stand alone electrical building did it need to be fire rated.

I plan on making the recommendation that it be built with a 2 hour fire rating.

 

[don_resqcapt19]

...
I plan on making the recommendation that it be built with a 2 hour fire rating.

Why? That is really to protect other parts of structures or to protect other structures. I don't seen any benefit to having the MCC have a 2 hour rating, unless there are things outside of the MCC that could be a fire danger to the MCC itself.

 

[wild1]

Why? That is really to protect other parts of structures or to protect other structures. I don't seen any benefit to having the MCC have a 2 hour rating, unless there are things outside of the MCC that could be a fire danger to the MCC itself.

Good point. However with this being on a site of an Ethanol production facility and not finding any codes exempting stand a lone electrical buildings, it may be wise to error on the side of caution.