NEC Express5800/320Ma Planning Manual page 20

Cabinet Requirements
•
To prevent stray voltages, all components are grounded together through the
vertical mounting rails to the cabinet frame, and then to local building ground. To
ensure signal quality, use a grounding cable provided by NEC Solutions (America),
Inc. for local building ground.
•
There is a plan for maintaining cables and wires to the cabinet by either running
them under the floor or placing them overhead in an overhead cable tray.
•
Air flows through the cabinet from front to back.
•
Filler panels cover any unused rack space to prevent air recirculation.
•
Vents are evenly distributed on the front and rear doors and comprise at least 63%
of the surface area.
Figure 2-1 shows the required rail clearance between the front vertical rails and the
inside edge of an accessory leg.
2-2 Express5800/320Ma: Site Planning Guide
N O T E
If your cabinet does not have vented front and rear doors,
you can remove the doors from the cabinet while your
Express5800/320Ma 3.2 GHz or 3.6 GHz system is
operating.