If a compressor has a rated FLA of 20A but is drawing 26A while running, what is a possible issue?

When a compressor is rated for a full load amperage (FLA) of 20A but is drawing 26A while operating, this indicates that the compressor is drawing more current than normal. One possible cause for this increased current draw is a bad run capacitor. The run capacitor is essential for providing the necessary phase shift for the compressor motor to run efficiently. If the run capacitor is malfunctioning, the motor may not be able to operate at peak efficiency, resulting in increased current draw as the compressor struggles to maintain its performance level. This extra demand can lead to overheating and potential failure of the compressor if not addressed.

While the other options highlight valid concerns that could lead to increased amperage in compressors, they are not as direct in relation to the symptoms presented. For example, issues with the compressor's size or electrical supply can lead to performance problems, but they do not specifically account for the immediate current draw situation as well as a faulty run capacitor does. Additionally, while it’s true that a compressor nearing the end of its life may exhibit uncharacteristic behavior, the more immediate and likely cause for the excessive current draw in this scenario is a defective run capacitor.