Run Capacitors in Series

When wiring two capacitors with the same Voltage rating in series the capacitance is reduced to less than the smallest capacitor micro-farad being used. For example if you needed a 3uf 440 volt capacitor on a job but you only have a 5 uf 440 volt and a 7.5 uf 440 volt capacitor in your inventory, then wiring them in series would provide you with a 3 uf 440 volt capacitor. These two formulas are the science behind many of the multi tap Run capacitors being sold as a "Universal capacitor"

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