Hi Rich,

You wrote:
"...For example, laptop computers do
not attach to the power grid, although their
external power supplies do attach to the power
grid.  OSHA rules do not require a laptop
computer to be certified by a NRTL, but the
external power supply must be certified by a
NRTL."

Your statement would be true with laptops w/o analog modem ports, however,
Article 800-4 of the NEC states:
"800.4 Equipment. Equipment intended to be electrically connected to a
telecommunications network shall be listed
for the purpose."

I am sure that most of us are already aware of this requirement. I just
thought I'd mention it.

Best regards,

Ron Pickard
[email protected]



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