In what way does a start capacitor differ from a run capacitor?

The distinction between a start capacitor and a run capacitor lies significantly in their construction and function. A start capacitor is designed to provide a boost of energy to help the motor start up, which generally requires a larger amount of current for a short duration. This is why a start capacitor typically has a higher microfarad value, allowing it to store and release a larger charge quickly.

When comparing start and run capacitors, a standard characteristic is that start capacitors often are housed in a plastic casing. This plastic casing serves as insulation, and it's important for the capacitor's performance and safety in the electrical circuit. Conversely, run capacitors, which are meant to work continuously after the motor has started, usually operate at a lower microfarad value and are typically housed in a metal casing that dissipates heat more effectively.

Understanding these differences helps technicians identify and use the appropriate type of capacitor in motor applications efficiently, thus ensuring proper functioning and longevity of the equipment.