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Technical data
Measurement Category II
This category refers to local-level electrical distribution, such as that pro-
vided by a standard wall outlet (for example, 115 V AC voltage for U.S. or
230 V AC voltage for Europe). Examples of Measurement Category II are
measurements performed on household appliances, portable tools, and simi-
lar modules.
Measurement Category III
This category refers to measurements on hard-wired equipment in fixed in-
stallations, distribution boards, and circuit breakers. Other examples are wir-
ing, including cables, bus bars, junction boxes, switches, socket outlets in
the fixed installation, and stationary motors with permanent connections to
fixed installations.
Measurement Category IV
This category refers to measurements on primary over-current protection
devices and on ripple control units.
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