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To ensure adequate ventilation, there should be a free space, 150 mm (6") high,
between the top of the cabinet and the ceiling, the underside of any beam, duct or
similar object over the cabinet. When cables enter the cabinet from above, the space
available should be at least 1000 mm (40") high to provide working space, see
Figure 2-17
.
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The distance between the rear and the sides of the cabinet and an adjacent wall
should be no less than 40 mm (1.6 inches), see
Figure 2-18
. This will ensure good
ventilation.
The free space in front of the cabinet should be the width of the door plus aisle
width.
Wall mounted enclosures should use standoffs equal to the clearance requirements.
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M
in 150
m
m
Min 40 mm
Mi
n
4
0
m
m
(1.6 inches)
Standoffs for Wall
Mounted Enclosures
(1
.6 i
n
ch
e
s
)
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