Interpretation #7180

Published May 31, 2013

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Original Request

Code Version
2010
Code
BUILDING
Code Description
Building
Chapter
4
Section
403.4.7.1
Topic
Emergency Generator

Question

Is it the intent of FBC 2010-Section 403.4.7.1 to require a Level 1 emergency generator to be enclosed in a 2 hour fire rated room, even if the generator is installed on the last tier (open to the sky) of either an open or enclosed parking garage?

Answer Published 05/31/2013 at 12:21 AM

Yes, provided the standby system is powered by a generator
that is set INSIDE a building to be enclosed by 2-hour
vertical and horizontal fire barriers. If considered a roof
top mount, it would not be inside a building.However, the
enclosure required by NFPA 110 and the equipment installation
may trigger requirements from Section 1509.

Commentary

None.