Plenum System Between Equipment And End Portal - GE AKD-20 AR Installation And Maintenance Manual

AKD-20 AR / Entellisys AR Low-voltage Switchgear DEH-41473
Section 5. Exhaust Plenum Installation
Plenum System between Equipment and End
Portal
Construction of the exhaust plenum between the end flange
on the switchgear and the exhaust end portal can vary upon
the customer's construction requirements.
Care should be taken to ensure that minimum cross-sectional
area of the exhaust plenum interior volume measure no less
than 12 inches by 20 inches.
The exhaust plenum should be constructed of a corrosion
resistant metal with a material thickness of no less than 23
gauge.
Attaching the exhaust plenum should adhere to the details
shown in Figure 5.10.
Total length of the plenum has no restriction. Elevation
changes and turns of no greater than 90 degrees are
acceptable but should be kept to a minimum.
The exhaust plenum should be anchored in such a method
that it will support the weight of the system itself and adhere
to the customer's construction/specification requirements.
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