Red Seal Appliance Service Technician Practice Questions - Red Seal Appliance Service Technician Interprovincial Exam

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When selecting a digital multimeter (DMM) to test a three-phase commercial range operating at 600V, what minimum CAT safety rating must the meter and its test leads have?

CAT I - 600V CAT II - 300V CAT III - 600V or CAT IV - 600V CAT II - 600V

Correct Answer:

CAT III - 600V or CAT IV - 600V

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