NEC T30A User Manual page 8

Elevated Operating Ambient．
If installed in a closed or multi-unit rack assembly, the operating ambient temperature of
the rack environment may be greater than room ambient. Therefore, consideration
should be given to installing the equipment in an environment compatible with the
maximum ambient temperature (Tma) specified by the manufacturer.
Reduced Air Flow．
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.
Reliable Earthing．
Reliable earthing of rack-mounted equipment should be maintained. Particular attention
should be given to supply connections other than direct connections to the branch circuit
(e.g. use of power strips).
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