CAT II: Primary electrical circuits in equipment connected to an AC electrical outlet by a power cord portable tools, household appliances, etc. CAT II covers directly measuring electrical outlet receptacles. CAT III:Primary electrical circuits of heavy equipment fixed installa- tions connected directly to the distribution panel, and feeders from the distribution panel to outlets. CAT IV:The circuit from the service drop to the service entrance, and to the power meter and primary overcurrent protection device distribution panel. Using a measurement instrumentin an environment designated with a higher-numbered category than that for which the instrument is rated could result in a severe accident, and must be carefully avoided.
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Resistance Meters | Battery Testers
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