What does a properly-sized run capacitor do for the compressor in a refrigeration system?

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A properly-sized run capacitor is essential for the optimal functioning of a compressor in a refrigeration system, particularly in facilitating smooth starting. When the compressor initially starts, it requires a peak amount of current to overcome the inertia and to get the motor running. The run capacitor provides this additional electrical energy, creating a phase shift that helps the motor start more efficiently. This results in a reduction of mechanical stress during startup, which is crucial for the longevity and reliability of the compressor.

The other options do play a role in compressor functionality, but the primary purpose of a run capacitor is to assist in the starting process. While improving energy efficiency and preventing overheating are important considerations for compressor operation, the direct connection of the run capacitor is specifically related to its ability to help the compressor start smoothly.

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