#### Hyrax4978

##### Registered User

You can find it in the NEC 70 section 513.3.

I can not find where the term effectively cut off is defined so i know how to achieve this. while i can find on google it appears to be two series of doors, but i would like to have the actual text of where this comes from and i can not find it. The other option is a major electrical modification to the spaces adjacent to the hangar, and that would be an absorbanent cost.

any help would be greatly appreciated.

Thank you,