regarding 3-phase 112.5 kva transformer

[zam]

Does the NEC require a 3-phase 112.5 kva transformer to be in its own fire rated room? Thank you.

 

[ron]

No, why would you suspect that it might?

 

[tw1156]

450.21 (B)

450.21 (B)

450.21 (B) would require it, but 99% of the time we meet the exception for insulation rating of the transformer so it does not have to be placed in a fire resistance room.

 

[david luchini]

450.21 (B) would require it, but 99% of the time we meet the exception for insulation rating of the transformer so it does not have to be placed in a fire resistance room.

450.21(B) wouldn't require it, regardless of the insulation rating.

 

[tw1156]

You are correct -- for some reason I read the initial question as over 112.5 kVA.:slaphead:

 

[zam]

Thank you to everyone for replying.