When a fuse is checked using a ohmmeter, a good fuse will read ____.

When checking a fuse with an ohmmeter, a good fuse will read zero ohms. This indicates that the fuse is intact and has a complete electrical path. The concept of zero ohms refers to the fact that there is minimal to no resistance in the circuit allowing for the full flow of current.

In practical terms, a reading of zero ohms means that the fuse is functioning properly and can effectively protect a circuit by allowing current to pass through without interruption. If there were any resistance present, even a small amount, it could suggest that the fuse is beginning to fail or has already failed, which would not be ideal for maintaining circuit integrity.

Understanding the resistance measurements helps technicians diagnose electrical issues more accurately, ensuring reliable operation of the HVACR systems.