NCCER ELECTRICAL LEVEL 1 -Module 12 Electrical Test Equipment
NCCER ELECTRICAL LEVEL 1 -Module 12 Electrical Test Equipment A voltmeter is used to measure the value of a circuit's ____. - Electromotive force A closed circuit is indicated by an ohmmeter reading of ______. - Zero A meter that operates by sensing the strength of the electromagnetic field around the wire is a(n) ______. - Clamp-on ammeter Current measurement in milliamps are typically read using a(n) _____. - VOM An expected resistance of 1,000,000 ohms would be measured using a ______. - Megohmmeter Which category rating covers installation that present the lowest risk? - CAT I Which of the following is true with regard to meter safety? - Thoroughly inspect all test equipment before each use. CAT I (Overvoltage Category) - Electronic equipment and circuitry CAT II (Overvoltage Category) - Single-phase loads such as small appliance tools, outlets at more than 30 feet from a CAT III source or 60 feet from a CAT IV source CAT III (Overvoltage Category) - Three-phase motors, single-phase commercial or industrial lighting, switchgear, busduct and feeders in industrial plants. CAT IV (Overvoltage Category) - Three-phase power at meter, service-entrance, or utility connection, any outdoor conductors, including signs, a pump, or exterior power generation (solar, wind, etc.).
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