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Questions and Answers
What happens when the current rating of a fuse is exceeded?
What happens when the current rating of a fuse is exceeded?
- The fuse becomes brittle and breaks.
- The metal strip cools down and solidifies.
- The metal strip expands and disconnects the circuit.
- The metal strip heats up and melts. (correct)
Which type of fuse is considered unsafe due to its interchangeability regardless of rating?
Which type of fuse is considered unsafe due to its interchangeability regardless of rating?
- Time delay fuse
- Cartridge fuse
- Edison-base plug fuse (correct)
- Type S plug fuse
In what scenarios are time delay fuses particularly useful?
In what scenarios are time delay fuses particularly useful?
- For immediate circuit disruptions
- For fuses with low melting temperatures
- For continuous overloads
- For handling overloads for a fraction of a second (correct)
What is the purpose of an overcurrent protection device's Overcurrent Rating?
What is the purpose of an overcurrent protection device's Overcurrent Rating?
Why are Edison plug fuses no longer allowed in new and retrofit installations?
Why are Edison plug fuses no longer allowed in new and retrofit installations?
What is the Interrupting Rating requirement for circuit breakers and fuses based on the provided text?
What is the Interrupting Rating requirement for circuit breakers and fuses based on the provided text?
What is the difference between Nonmetallic-Sheathed Cable (NM) and Nonmetallic-Sheathed Cable (NMC)?
What is the difference between Nonmetallic-Sheathed Cable (NM) and Nonmetallic-Sheathed Cable (NMC)?
What distinguishes Underground Feeder (UF) cables from other types of cables mentioned in the text?
What distinguishes Underground Feeder (UF) cables from other types of cables mentioned in the text?
What distinguishes Service Entrance (SE) cable from Underground Service Entrance (USE) cable?
What distinguishes Service Entrance (SE) cable from Underground Service Entrance (USE) cable?
How can Armored Cable be classified based on the insulation type of the conductors?
How can Armored Cable be classified based on the insulation type of the conductors?
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