IR Level I Practice Questions - Certified Infrared Thermographer Level I Exam

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When performing an infrared inspection of electrical switchgear, you measure a surface temperature of 65 °C on a bus bar connection that is at the same load as other connections measuring 30 °C. Which NETA/IEC standard temperature differential category does this represent?

Minor — temperature rise of 1–10 °C; monitor at next scheduled inspection Intermediate — temperature rise of 11–20 °C; repair within one year Serious — temperature rise of 21–40 °C; repair as soon as possible Critical — temperature rise greater than 40 °C; repair immediately

Correct Answer:

Serious — temperature rise of 21–40 °C; repair as soon as possible

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