Allied Telesis AT-x220-28GS Installation Manual page 29

AT-x220-28GS Switch Installation Guide
All countries: Install product in accordance with local and National
Electrical Codes.  E8
Warning
Only trained and qualified personnel are allowed to install or replace
this equipment.  E14
Circuit overloading: Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of circuits might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern.  E21
Warning
Mounting of the equipment in the rack should be such that a
hazardous condition is not created due to uneven mechanical
loading.  E25
Warning
Use dedicated power circuits or power conditioners to supply
reliable electrical power to the device.  E27
Warning
The chassis may be heavy and awkward to lift. Allied Telesis
recommends that you get assistance when mounting the chassis in
an equipment rack.  E28
If installed in a closed or multi-unit rack assembly, the operating
ambient temperature of the rack environment may be greater than
the room ambient temperature. Therefore, consideration should be
given to installing the equipment in an environment compatible with
the manufacturer's maximum rated ambient temperature (Tmra). 
E35
Caution
Installation of the equipment in a rack should be such that the
amount of air flow required for safe operation of the equipment is not
compromised.  E36
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