Final answer:
A conduit seal is a fitting that is used to isolate electrical apparatus from atmospheric hazards. A conduit seal (option a) is the correct answer, serving as a fitting to protect electrical apparatus from atmospheric hazards by isolating them within the conduit system. The correct answer to the student's question is a. conduit seal.
Step-by-step explanation:
The fitting that is inserted into runs of conduit to isolate certain electrical apparatus from atmospheric hazards is called a conduit seal.
A conduit seal (option a) is the correct answer, serving as a fitting to protect electrical apparatus from atmospheric hazards by isolating them within the conduit system.
The correct answer to the student's question is a. conduit seal. A conduit seal is a type of fitting used in electrical installations where runs of conduit need to be sealed off to protect electrical apparatus from atmospheric hazards such as flammable gases or vapors. This is a crucial component in maintaining the safety of electrical systems, as it helps to prevent the spread of fire or explosions should these gases or vapors enter the conduit system.
Other devices like fuses and circuit breakers play significant roles in safeguarding electrical circuits by interrupting excessive currents and preventing thermal hazards. Ground Fault Interrupters (GFIs), on the other hand, are designed to prevent shock by detecting loss of current to unintended paths and quickly disconnecting the power.