wiring 2 in 1 cap in parallel

1982 Views 6 Replies 5 Participants Last post by beenthere, Jun 23, 2009

pomelo

Discussion Starter · Jun 23, 2009

I have a 40 + 5 and a 40 mfd cap. I need a total mfd rating of 80 mfd. I want to wire the 40 mfd 2 in 1 cap and 40 mfd single cap in parallel. As you know, the fan shares the common wire on the 2 in 1 cap. I just want to make sure it doesn't interfere with the capacitance for the condenser motor.

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SKIP4661

· #2 · Jun 23, 2009

Should be good to go.

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Yoyizit

· #3 · Jun 23, 2009

Are the voltage ratings for each cap high enough for the application?

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Plumber101

· #4 · Jun 23, 2009

In parallel it will still be 40 mfd

Series will be 80 mfd

Basic electrical..

However I don't know how long it will last...

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Yoyizit

· #5 · Jun 23, 2009

"Capacitors in a parallel configuration each have the same applied voltage. Their capacitances add up. Charge is apportioned among them by size. Using the schematic diagram to visualize parallel plates, it is apparent that each capacitor contributes to the total surface area."

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Plumber101

· #6 · Jun 23, 2009

Yoyitiz,

I stand corrected. I just went to the service truck and connected two 5 mfd in parallel and you are right 10 mfd.

Just did think hard enough

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beenthere

· #7 · Jun 23, 2009

And a 12.5 and 20 wired in series will give you 7.69, whihc is close enough to 7.5 when your ouot in the boonies, and don't want to run 20 miles for a 7.5.

And don't have 2-15s to use.

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