Emerson FXMP25 User Manual page 12

The location and size of the bottom shall cover the area shown in Figure 3-1. Any part of
the side which is within the area traced out by the 5 ° angle is also considered to be part
of the bottom of the fire enclosure.
Figure 3-1 Fire enclosure bottom layout
The bottom, including the part of the side considered to be part of the bottom, must be
designed to prevent escape of burning material - either by having no openings or by
having a baffle construction. This means that openings for cables etc. must be sealed
with materials meeting the 5VB requirement, or else have a baffle above.
See Figure 3-2 for acceptable baffle construction. This does not apply for mounting in
an enclosed electrical operating area (restricted access) with concrete floor.
Figure 3-2 Fire enclosure baffle construction
X
12
o
5
Not less
than 2
Baffle plates (may be above or
times 'X'
N o t l e s s
t h a n 2 X
below bottom of enclosure)
X
www.controltechniques.com
Drive
o
5
B a f f l e p l a t e s ( m a y b e
a b o v e o r b e l o w b o t t o m
o f e n c l o s u r e )
B o t t o m o f f i r e
Bottom of fire enclosure
e n c l o s u r e
FXMP25 User Guide
Issue Number: 3