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Type: Posts; User: GoldDigger

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  1. Replies
    72$$
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    2,331

    Even the best true RMS meters will still give you...

    Even the best true RMS meters will still give you confusing numbers when there are high levels of triplen harmonics on a three phase system.
    Those harmonics will affect all three line to neutral...
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    13$$
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    403

    One measures physical energy per unit area, the...

    One measures physical energy per unit area, the other multiplies the energy by the relative sensitivity of the eye to the frequencies of light involved.
    No amount if far infrared, for example, will...
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    12$$
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    266

    Either I am not understanding your statement or...

    Either I am not understanding your statement or you need to look at it again.
    If an ungrounded conductor is extended through a GFCI receptacle, then the corresponding neutral must also extend...
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    2$$
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    64

    The two wire forward phase control dimmer does...

    The two wire forward phase control dimmer does not use the load connection to "find the zero crossing".
    It uses it as a reference for a voltage divider between hot and a lower voltage to set the...
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    12$$
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    276

    I would say it depends on whether the...

    I would say it depends on whether the instructions for the heat/fan/light assembly call for either a dedicated circuit or a separate circuit for the heat.
  6. One consequence that would affect the rectifier...

    One consequence that would affect the rectifier rsther than the batteries is that it would see higher current on one or more of the pulses instead of a uniform current distribution. Worst case it...
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    2$$
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    81

    In theory you could put a clamp-on ammeter or...

    In theory you could put a clamp-on ammeter or permanently wired current transformer around both the work lead and the tool lead. The amount of current read on the meter will indicate how much current...
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    3$$
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    118

    The NEC is more concerned with protecting the...

    The NEC is more concerned with protecting the wires from damage than with the undamaged cable threatening the workers.
  9. Replies
    3$$
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    138

    But if the panel is flush mounted in the wall and...

    But if the panel is flush mounted in the wall and the box is surface mounted, could it be considered a violation of the maintenance access space rather than the dedicated electrical space?
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    5$$
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    164

    How about the quality of the return connection...

    How about the quality of the return connection from workpiece to welder? No need to involve " ground", and having any of that current trying to travel via earth (dirt) or EGC can cause problems.
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    8$$
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    165

    There is nothing wrong or prohibited with having...

    There is nothing wrong or prohibited with having parallel paths in the EGC network or anywhere in the GES.
    Just don't let them parallel the grounded conductor (usually the neutral.)
  12. Replies
    8$$
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    165

    You are misreading what the article actually...

    You are misreading what the article actually says. And the reason has been the topic of hundreds of posts and numerous suggestions for major terminology changes.

    A ground fault current path is...
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    21$$
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    581

    One possibility that has not been considered is...

    One possibility that has not been considered is RMS voltage readings on a source with extremely high third harmonic voltage components.
    But it would be coincidental that the odd voltage came out so...
  14. If the oscillation only happened when the fan was...

    If the oscillation only happened when the fan was in the circuit, I could make a SWAG as to the cause. It would involve the combination of the lag time involved in heating the filament and increasing...
  15. That potential contradiction is indeed resolved...

    That potential contradiction is indeed resolved by the idea that if there are no (non-trivial) local loads the connection to the utility will not be through service equipment, since there is no...
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    10$$
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    366

    The cleaner/primer that you use before applying...

    The cleaner/primer that you use before applying the glue (required for pressure piping but optional for electrical)may dissolve the dried glue or the surface of the pipe under it.
  17. Point of Common Connection?

    Point of Common Connection?
  18. Replies
    9$$
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    256

    Yes. The wires actually connected to it are...

    Yes.
    The wires actually connected to it are counted individually but the fudge factor for the device (yoke mounted) itself does not depend on its complexity.
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    23$$
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    566

    Simple: The two sets of wires separate at the...

    Simple: The two sets of wires separate at the generator. If there is OCPD at the generator st all it must be separate OCPDs for the two branches.
    Also two transfer switches of course.
  20. Thread: subpanel

    by GoldDigger
    Replies
    6$$
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    260

    It depends on where the subpanels are located. ...

    It depends on where the subpanels are located.
    Each separate building in the system will need its own local ground electrode(s) in addition to the EGC from the main distribution. If all of the load...
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    8$$
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    223

    Close, but in this case the inspector appears to...

    Close, but in this case the inspector appears to be saying that openings (i.e. conduit) through which conductors enter do NOT need to be sealed while openings through which no conductors enter must...
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    23$$
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    785

    It is not necessarily off their mark if they do...

    It is not necessarily off their mark if they do not want the repair or replacement work based on their corporate business model .
  23. Replies
    5$$
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    250

    " Shall be permitted" means that the permission...

    " Shall be permitted" means that the permission itself is mandatory. If you decide to do it that way the AHJ must accept it.
    But it does not require you to use that method if you prefer some other...
  24. A touch safe fuseholder is not automatically safe...

    A touch safe fuseholder is not automatically safe for load interruption by its removal. And few automotive fuseholdesr are rated for higher voltage DC.
  25. Replies
    3$$
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    175

    Maybe the combination could only pass the test if...

    Maybe the combination could only pass the test if the breaker included GFCI? :)
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