What method can be used to test a fusible link?

The correct approach to testing a fusible link involves multiple methods, making the choice of "all of the above" applicable.

Visual inspection allows the technician to identify any physical damage, discoloration, or breakage in the fusible link. This quick check is fundamental as it can reveal immediate issues that might not require more invasive testing methods.

Using a multimeter is crucial for a more comprehensive analysis. By setting the multimeter to measure resistance, the technician can determine whether the fusible link is functioning properly. A good fusible link will show continuity, while a blown link will display infinite resistance or open circuit conditions.

Temperature measurement can also play a role in testing fusible links, particularly when checking for overheating conditions that might indicate a failure. This method can be used in scenarios where a fusible link has not visibly failed but may still be malfunctioning due to excessive current.

Utilizing all of these methods ensures a thorough assessment of the fusible link's health and functionality, confirming that it will adequately perform its role in the electrical system.