When a compressor kicks the circuit breaker while starting, what could be the likely problem if the FLA rating is 7 amps?

Choosing a weak circuit breaker as the likely problem when a compressor kicks the circuit breaker while starting aligns with the understanding of how circuit breakers function in relation to electrical loads. If the Full Load Amperage (FLA) rating of the compressor is 7 amps, it's important to note that during startup, compressors often draw significantly more current, typically referred to as inrush current or starting current. This starting current can be several times higher than the normal operating current.

The circuit breaker is designed to protect the electrical circuit by tripping when the current exceeds its rated capacity. If the circuit breaker is weak or not rated properly for the inrush current required by the compressor, it may trip prematurely, even if the compressor itself is functioning correctly. Therefore, a weak circuit breaker that cannot handle the inrush current could easily explain why the compressor kicks the circuit breaker during startup.

In contrast, while a faulty compressor or low refrigerant levels can lead to problems in operation, they are typically characterized by performance issues rather than a circuit breaker tripping at startup. Similarly, issues with wiring could cause other electrical problems, but a precise tripping behavior at the moment of startup tends to suggest a problem with the breaker itself.