Start Capacitor
2010
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Start Capacitor

Is a start capacitor plastic While a run cap metal?I?
My shallow well pump has bad start cap. Bought replacement & it is metal. Does not note it to be a start or run cap. How can I tell? Can I use a run cap to replace a start cap?
WHat you are looking at is just the casing; it matters not at all what material the casing is.
What matters is that the new one have the same rating for capacitance [typically microfarads, UF], and a rating equal or greater for voltage.
On a given motor the start and run caps may well be different, but the only differences are the capacitance and the voltage rating.
Starting capacitors
































