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  1. #1
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    How To Understand Wiring?

    I've been in school learning hvac for about 6 months. Everything seems to come easily to me but this..

    For example we get handed a worksheet with a compressor, condenser fan motor, potential relay, capacitor, contactors, transformers, t stat etc

    When the teacher go over it i kinda get it, I know what each component does and what it goes to for the most part. But i go blank as to how to connect everything. For some reason i just dont see it at all. Same thing happens with hands on wiring

    Ive been looking all over online for a way to understand how to do it but cant find anything. I dig into my electrical book try to connect it myself, but even when somebody walks me through it i still dont understand why things are hooked up like they are. Any advice for resources or a way to look at it so i understand?

    thank you

  2. #2
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    Yes, you should become a pro member here because we have an entire educational forum. I've got some articles on electricity in that forum and you can post questions in the Pro area and we will go into whatever detail is necessary to help you understand what has to happen.

    You need 15 post of some sort of technical substance where you take part in discussions in the open forum, and then you can use the link in my sig line down at the bottom: "how to become a professional member."
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  4. #3
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    If allowed. Knowing the "sequence of events" is a good starting place. Then the "path to follow" gets clearer and easier to understand. There is always a "s-o-e". 5,000 diff units/pieces of equipment could have 5,000 diff "s-o-e".

  5. #4
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    You might want to search YouTube for Ron Walker.
    Doug

  6. #5
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    Here's what I can offer. Keep reading, asking your instructor for clarification. Even if it means staying after class.
    Wayyyyyyy back when I took my Bronze Oil Heating Class I would do this. It was a 3 week class, far away. Luckily I stayed at my sister's nearby. As soon as the class let out, everyone bolted. I stayed around with the instructor. He had oil companies give him all the bad controls, relays, aquastats, etc., and he was more than happy to have an eager student hang with him. We just went thru and tested things. Very educational.
    I will tell you if you work at it, it will become much easier. Think of it like riding a bike, taking up an instrument, or learning a language (computer or spoken). In the beginning its so confusing. Then with practice, experience & repitition, you get to a point where it starts to become second nature.
    Also, if you know someone in the field, see if you can ride along with them and keep asking questions. Now this would most likely have to be a person who works for themselves.
    "Sometimes what's right is what's left after you do everything wrong"--Robin Williams

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  8. #6
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    Electrical/com wires aren't racist. They don't care what color they are. You can put white on Y at the stat and the unit and the condensor and it will still work. Just follow the chain. Don't make it so complicated. What Steve said is right. Just keep doing it and hopefully it will eventually click. Blown a couple fuses on boards when I first started doing this.

  9. #7
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    Or always look at it like a ladder. One side is hot, other common at least on lower volts and a lot of things { rungs} in the middle . Now following the rungs in the middle is a learning exp, but you will find the mfgs wiring diagrams that are printed in a ladder format, to me are easier to follow.
    UA Local 32

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  11. #8
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    Quote Originally Posted by Kiley View Post
    Electrical/com wires aren't racist. They don't care what color they are. You can put white on Y at the stat and the unit and the condensor and it will still work. Just follow the chain. Don't make it so complicated. What Steve said is right. Just keep doing it and hopefully it will eventually click. Blown a couple fuses on boards when I first started doing this.
    A poor comparison.

    Wire colors are used by convention, particularly today. Those colors have definite meanings, whether used for low voltage controls or for power. You would be wise to both learn and respect those color codes.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  12. #9
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    Quote Originally Posted by timebuilder View Post
    A poor comparison.

    Wire colors are used by convention, particularly today. Those colors have definite meanings, whether used for low voltage controls or for power. You would be wise to both learn and respect those color codes.
    what if ALL the conductors are the same color, just numbers to identify.....................
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  13. #10
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    Not everyone shares the same "conventions" when it comes to wiring and I always check for myself before assuming anything.

  14. #11
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    Quote Originally Posted by timebuilder View Post
    A poor comparison.

    Wire colors are used by convention, particularly today. Those colors have definite meanings, whether used for low voltage controls or for power. You would be wise to both learn and respect those color codes.
    Tell that to the old carriers, all yellow wires! just saying.

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  16. #12
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    Quote Originally Posted by pecmsg View Post
    Tell that to the old carriers, all yellow wires! just saying.
    Or York and the black wires.
    It`s better to be silent and thought the fool; than speak and remove all doubt.

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  18. #13
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    "...particularly today."
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

    AOP Forum Rules:







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