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Questions and Answers
Which of the following is NOT a requirement for marking on circuit breakers?
Which of the following is NOT a requirement for marking on circuit breakers?
- Current carrying capacity
- Operating temperature (correct)
- Voltage rating
- Country of origin
What is the purpose of the 28-day test for circuit breakers?
What is the purpose of the 28-day test for circuit breakers?
- To test the dielectric properties
- To assess mechanical and electrical endurance (correct)
- To ensure reliability of terminals
- To check for temperature changes
Which of the following is a requirement for protection against electric shock?
Which of the following is a requirement for protection against electric shock?
- Testing insulation resistance
- Checking for temperature rise
- Leaving in a humidity chamber
- Using a test finger (correct)
What is the purpose of the dielectric properties test for circuit breakers?
What is the purpose of the dielectric properties test for circuit breakers?
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What is the requirement for reliability of screws, current carrying parts, and connections in circuit breakers?
What is the requirement for reliability of screws, current carrying parts, and connections in circuit breakers?
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