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Thread: 30 + 30= 60??

  1. #1
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    30 + 30= 60??

    I need a 60 capacitor, of course guess what we are out of... Is there any way to use jumper and hook 2 of my 30 caps and get them air til tomorrow when I get my delivery?? May be a dumb question but... Thanks for the help

  2. #2
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    Simply wire them in parallel.

  3. #3
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    Thanks. I figured maybe I could but wasn't willing to fry something on a guess

  4. #4
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    P.S you should apply for pro membership. Im not sure if I shoulda said that in open forum.

  5. #5
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    Ok, thanks for the tip. They can move the thread if need be, you are probably right
    Last edited by DRC525; 08-20-2013 at 09:32 AM. Reason: Posted twice

  6. #6
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    I will do that. They can always move the thread as you are probably right.

  7. #7
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    There are some good capacitor vids on here if you get pro membership. Also some good ones on you tube.
    You need to put the phone down and get back to work!

  8. #8
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    Where are the vids on this site?

  9. #9
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    Quote Originally Posted by Core_d View Post
    P.S you should apply for pro membership. Im not sure if I shoulda said that in open forum.

    And in the Pro forums there are threads that tell you how to figure out what your uF will be if you wire them in series.

    Not allowed to apply for pro membership until you have 15 post.

  10. #10
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    question on the subject. i was told when you parrallel two capacitors they must be the same uf .
    example 10+10=20 . said you couldnt put a 10uf with another uf rated cap such as a 5uf? is this true?

  11. #11
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    Quote Originally Posted by jeffinok View Post
    question on the subject. i was told when you parrallel two capacitors they must be the same uf .
    example 10+10=20 . said you couldnt put a 10uf with another uf rated cap such as a 5uf? is this true?
    No.

  12. #12
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    Quote Originally Posted by jeffinok View Post
    question on the subject. i was told when you parrallel two capacitors they must be the same uf .
    example 10+10=20 . said you couldnt put a 10uf with another uf rated cap such as a 5uf? is this true?
    Your start caps is parallel to your run cap before being taken out of the circuit.

  13. #13
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    Quote Originally Posted by jeffinok View Post
    question on the subject. i was told when you parrallel two capacitors they must be the same uf .
    example 10+10=20 . said you couldnt put a 10uf with another uf rated cap such as a 5uf? is this true?
    Quote Originally Posted by IRBH View Post
    No.
    The math is simple either way... Add them up.
    If we have data, let’s look at data. If all we have are opinions, let’s go with mine. – Jim Barksdale, former Netscape CEO

  14. #14
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    Thanks for all the help and tips today. Once I get to 15 posts I will "go pro "

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    Quote Originally Posted by jeffinok View Post
    question on the subject. i was told when you parrallel two capacitors they must be the same uf .
    example 10+10=20 . said you couldnt put a 10uf with another uf rated cap such as a 5uf? is this true?
    Why don't you experiment with your meter! Wire 2 in parrallel and then in series! Then read the MFD with your meter! Simple and removes all doubt and i'm sure you could come up with all kinds of different combinations!

  16. #16
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    thanks for the replys.
    i know in series what ever two you combine halves it . just wanted to make sure i could mix and match uf ratings in parrallel . again thanks

  17. #17
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    Quote Originally Posted by jeffinok View Post
    thanks for the replys.
    i know in series what ever two you combine halves it . just wanted to make sure i could mix and match uf ratings in parrallel . again thanks
    Yes 2 30's in series gives 15uf but doubles the voltage rating. It gets more complicated when caps are different values.

  18. #18
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    The cap calculate is just opposite with resistor
    Resistor in series:
    R total= R1+R2
    Parallel:
    R total = R1 X R2/ (R1 + R2)

    Calculate the capacitors:
    In parallel:
    C total = C1 + C2
    In series:
    C total = C1 X C2/ C1+ C2
    For example:
    if you hook up 2 caps in series (c1 = 5 uf, c2 = 10 uf)
    C total is = 10X5/(10 +5) = 3.333 uf
    The total value alway smaller than the smallest of the 2.
    3.33 uf < 5uf

  19. #19
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    parallel=plus
    series=subtract
    and yes, verify with a meter.
    easy peasy.

  20. #20
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    Quote Originally Posted by 54regcab View Post
    Yes 2 30's in series gives 15uf but doubles the voltage rating. It gets more complicated when caps are different values.
    In theory, the voltage tolerance would add.

    That's all for an open forum.....
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
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