Testing & TroubleshootingQuestion 500 of 521
For routine voltage checks at 120 V cord-and-plug receptacle outlets on a branch circuit, what CAT rating is generally the minimum appropriate category?
a.CAT II
b.CAT 0
c.No rating required
d.CAT IV only
Explanation
Receptacle-level, cord-and-plug load measurements correspond to CAT II. CAT III/IV are for distribution panels, feeders, and service equipment; using a higher-rated meter is fine, but CAT II is the minimum appropriate for the outlet. 'CAT 0' (b) is not a standard category and a rating is always required for live work.
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