I would say that unless isolation from the public power supply is somehow
guaranteed as part of your installation procedures, you must assume that
your equipment comes under -3-2 and -3-3. Basically, if it's got a plug and
pulls less than 16 Amps at European mains voltages, you need to comply.
What softens the blow here is amendment A14 to -3-2, which allows you to
reclassify just about everything except PCs and TVs from Class D to Class A.
This bypasses the harmonic current per Watt limits contained in Table 3 of
-3-2 and makes things a bit easier. The logic here is whether something is
LIKELY to be plugged directly into the public supply, and in what numbers.
PCs and TVs are domestic and ubiquitous, so get take the rap as Class D.
Paul O'Shaughnessy
Affymetrix, Inc.
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