The Vanguard start capacitor is designed for compatible electrical applications requiring a 30 to 36 MFD range at 115V. A component like this is useful because start capacitors help a motor overcome initial startup resistance and move into normal operation with less strain and hesitation.This replacement is especially useful when the original capacitor is no longer supporting reliable startup, has become electrically weak, or has failed outright. Replacing a tired capacitor with the correct rating can often restore the kind of startup behavior the equipment was originally meant to have.The BC-30 is a smart service choice when a compatible 115V electrical system needs the right capacitor range to bring startup performance back into shape. Vanguard start capacitor 30 to 36 MFD range 115V application rating Useful for improving motor startup reliability Helps restore proper electrical starting performance