Jeff, if your rack assembly including the power supply is Listed, then the
inspector has no authority to investigate the components included in that
Listed assembly. On the other hand, if you added a power supply to a Listed
rack, then that power supply must be Listed.
----------
From: JENKINS, JEFF [SMTP:[email protected]]
Sent: Thursday, March 11, 1999 12:48 PM
To: 'emc-pstc'
Subject: NRTL requirement in the NEC?
Hello Group,
Has anyone heard of a requirement in the National Electrical Code
that power
supplies which are components of larger systems be approved by an
NRTL? I
have an inspector telling me this, but our copy of the NEC is 20
years old,
and I can't find it, anyway. In this case, the power supply is part
of a
rack system. It was my understanding that the supply could be
evaluated as
a component of the system. Is that not true?
Thanks,
Jeff Jenkins
Senior Regulatory Compliance Engineer
Advanced Energy Industries, Inc.
Fort Collins, CO USA 80525
Opinions are my own and not necessarily shared by Advanced Energy
Industries, Inc. or its affiliates.
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