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Type: Posts; User: physis

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  1. Replies
    1$$
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    1,070

    Motor Speed Controls

    I have somebody who, for some reason, wants to reduce the speed of the evacuating venting motor in his pizza joint. The one that vents kitchen smoke and heat. I don't a lot like this idea but he`s...
  2. Thread: Generator

    by physis
    Replies
    8$$
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    1,640

    Is it just me or is the link you provided just,...

    Is it just me or is the link you provided just, well, stupid?
  3. Replies
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    I suppose I should apologise, I've never seen...

    I suppose I should apologise, I've never seen terminology anything even close to this, and I've seen a lot of stuff. None the less, it appears I'm ignorant with regard to your question.
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    20$$
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    4,052

    I'm neither going to take a calculator to your...

    I'm neither going to take a calculator to your numbers nor sort out your acronymns.

    If you actually want some help perhaps you might rephrase.
  5. Replies
    31$$
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    But Don, how do you ignore the grounding issue?

    But Don, how do you ignore the grounding issue?
  6. Replies
    31$$
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    6,690

    Damn you're fast Bob :grin:

    Damn you're fast Bob :grin:
  7. Replies
    31$$
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    I just worked on a residensial service sub panel...

    I just worked on a residensial service sub panel that lost a leg due to corrosion. Isn't this a concern?
  8. Replies
    31$$
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    6,690

    I understand everything you've said Larry, that's...

    I understand everything you've said Larry, that's why I ask how this slug is such a good idea. I guess what Bob says about minimal failures makes "some" sense.
  9. Replies
    31$$
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    6,690

    All right, I cant' restrain myself any further, I...

    All right, I cant' restrain myself any further, I tried, but why shouldn't this so significantly important grounded conductor connection be hard-wired?

    I mean really, if this thing means so much,...
  10. Replies
    31$$
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    6,690

    I wonder if an aluminum plug would meet that...

    I wonder if an aluminum plug would meet that requirement?

    I do know it would make it less safe.

    Edit: Or at least reliable.
  11. Replies
    31$$
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    6,690

    Thank you Bob, I don't get to work with three...

    Thank you Bob, I don't get to work with three phase much. It seems like such an odd concept I'd have never guessed.
  12. Replies
    8$$
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    3,414

    I'm curious what the big deal is about using MC....

    I'm curious what the big deal is about using MC. It seems it would be faster, easier, safer and cheaper.

    Not to say there might not be a good reason for looking at doing it this way.
  13. Thread: Pole bases

    by physis
    Replies
    18$$
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    3,994

    Not regarding burial depth as Far as I know. ...

    Not regarding burial depth as Far as I know.

    In California we have to do a measly four feet for a 20' service pole, but it seems to work.
  14. Replies
    8$$
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    Do you know one that doesn't? Not that the...

    Do you know one that doesn't?

    Not that the idea sounds so good.
  15. Replies
    31$$
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    6,690

    A whole differnt topic :smile:

    A whole differnt topic :smile:
  16. Replies
    31$$
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    6,690

    The power companies have to ground their stuff...

    The power companies have to ground their stuff just like we do.
  17. Replies
    31$$
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    6,690

    Sorry for the duplication. I only attempted to...

    Sorry for the duplication. I only attempted to edit. That failed too some how????????
  18. Replies
    31$$
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    6,690

    This sounds OK. This sounds good too. ...

    This sounds OK.



    This sounds good too.



    I'm having a hard time understanding what you mean here.
  19. Replies
    31$$
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    6,690

    This sounds OK. This sounds good too. ...

    This sounds OK.



    This sounds good too.



    So you're saying the service enterance isn't grounded?
  20. Thread: mov valves

    by physis
    Replies
    22$$
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    5,160

    Hi Bob, :smile: What causes you to say that?...

    Hi Bob, :smile:

    What causes you to say that? It sounds to me like the electro-mechanical end is working. Limit controls are a common failure sourse.

    Edit: I don't mean to say that it might not...
  21. Thread: mov valves

    by physis
    Replies
    22$$
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    5,160

    If you intend to troubleshoot and repair this...

    If you intend to troubleshoot and repair this you'll need to find and understand how the drivers that power motors, solinoids or whatever else work and test those. From what I can gather it doesn't...
  22. Thread: Purpose of GEC

    by physis
    Replies
    50$$
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    9,389

    Soooo... a copper strap has less impeadence than...

    Soooo... a copper strap has less impeadence than a copper wire???

    I'm guessing dimensions or conductor protection aren't as important here?

    I consider insulated stranded wire to be far more...
  23. Thread: Purpose of GEC

    by physis
    Replies
    50$$
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    9,389

    Grounding literally means to connect a given...

    Grounding literally means to connect a given voltage to earth. It's evolved into meanings things like tying part of a transfomer secondary to a point that's called ground or common. The same concept...
  24. Thread: Purpose of GEC

    by physis
    Replies
    50$$
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    9,389

    Then we agree. :smile:

    Then we agree. :smile:
  25. Thread: Purpose of GEC

    by physis
    Replies
    50$$
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    9,389

    The EGC is a fault path back to the breaker,...

    The EGC is a fault path back to the breaker, without that or the grounded conductor the breaker is useless.
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