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Type: Posts; User: GoldDigger

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  1. Replies
    12$$
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    98

    Basically, under the wide discretion provided by...

    Basically, under the wide discretion provided by the NEC, all parts of the installation have to be acceptable to the AHJ, as represented by the inspector.
    There are some items that the NEC...
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    12$$
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    98

    The closest I have seen is the plastic covers...

    The closest I have seen is the plastic covers with end and center sections that you interlock to any length.
  3. But you need to measure not just the voltage but...

    But you need to measure not just the voltage but the available current.
    A high impedance voltmeter can read 120V AC when the source impedance (capacitive) allows less than 1ma of current to flow...
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    20$$
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    668

    The part of the USB spec that allows the charging...

    The part of the USB spec that allows the charging source to supply more than the USB 1.0 maximum current specifies either passive signaling or an active data handshake using the data pins, even with...
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    2$$
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    69

    I have never seen a Minimum OCP value on a...

    I have never seen a Minimum OCP value on a nameplate. Do you mean MCA and MOCPD are equal? The latter gives you no wiggle room at all.
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    2$$
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    123

    ruko, if the ground rods are far enough apart to...

    ruko, if the ground rods are far enough apart to be outside the spheres of influence of the other rods, then you can add the resistances in parallel.
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    11$$
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    457

    IMHO, there are two elements of the disconnect to...

    IMHO, there are two elements of the disconnect to look at:
    1. Does it clearly indicate ON and OFF?
    2. Can it be locked?
    So, can the door providing access to the fuse holder be locked?
    And can...
  8. Which in turn allows the NEC to enforce those...

    Which in turn allows the NEC to enforce those specifications.
  9. Thread: GEC bus bar

    by GoldDigger
    Replies
    14$$
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    343

    To infer is to make a finding of fact from a set...

    To infer is to make a finding of fact from a set of indirect or fuzzy statements.
    To imply is to strongly suggest an idea without directly stating it.
    Logical implication is rigorously correct...
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    19$$
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    356

    I thought that if you have to remove part of the...

    I thought that if you have to remove part of the building finish (Sheetrock) for access it was not accessible?
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    7$$
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    100

    And with that setup, as MH covers well in a...

    And with that setup, as MH covers well in a video, you can use wire good for only 30A and it will be considered protected by the combination of the 45A breaker and the motor overloads.
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    10$$
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    193

    Although some argue about the "readily...

    Although some argue about the "readily accessible" status under the sink.
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    7$$
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    100

    For safety, the AC unit will incorporate motor...

    For safety, the AC unit will incorporate motor overload protection, but the nameplate will specify the maximum allowed short circuit and ground fault OCPD upstream. If you go with a larger breaker in...
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    6$$
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    185

    A very low current resistive load (maybe 100k...

    A very low current resistive load (maybe 100k ohms) in parallel with the LED should allow the neons to light without letting the voltage across the LED build up to the point that the LED will flash. ...
  15. Clearly if I sell it it is beneficial while if...

    Clearly if I sell it it is beneficial while if you provide it inadvertently it is harmful. Just basic economics. :)
  16. One case where the intermittent operation of the...

    One case where the intermittent operation of the generator at full output has more than just fuel savings compared to continuous operation of the generator at lower output is for a diesel prime...
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    13$$
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    292

    Please be more specific about the transformers. ...

    Please be more specific about the transformers.
    Are they 480/240 input, 240/120 output depending on series parallel connection of the input and output windings? Just saying 120/240 either does not...
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    20$$
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    668

    Fortunately for the USB 3 standard adoption, none...

    Fortunately for the USB 3 standard adoption, none of the data speed enhancements affect the charge-only power application and cabling.
  19. FYI the Academy of Motion Picture Arts and...

    FYI the Academy of Motion Picture Arts and Sciences has published an extensive study comparing color output of various standard film and digital imaging techniques when used with tungsten light and...
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    1$$
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    144

    You can supply the drop cords from properly...

    You can supply the drop cords from properly supported hard wired boxes at the level of the dropped ceiling (not above it.)
    Maybe all thread from structural ceiling to the back of the device box...
  21. Replies
    13$$
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    292

    If you have transformers designed for 120/240...

    If you have transformers designed for 120/240 input and less than 480V output, they will do you no good, since you cannot connect them to 480V.
    Now with isolation type three phase transformers you...
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    4$$
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    170

    Some transformers are built with a set of taps...

    Some transformers are built with a set of taps rather than single connection points on the primary side to allow you to correct the output voltage when the input voltage is known to be different from...
  23. LED power supplies will just be normal power...

    LED power supplies will just be normal power supplies, decently filtered and possibly Class 2 listed.
    LED drivers, OTOH, will incorporate current limiting for a particular load rather than being a...
  24. As opposed to Electro-Harmonix De Humbugger! :)...

    As opposed to Electro-Harmonix De Humbugger!
    :)
    BTW, it is even worse with an electric bass!
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    6$$
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    171

    BTW, those pointy rods above the highest points...

    BTW, those pointy rods above the highest points of the building roof are commonly called lightning rods, but are properly referred to in code and by professionals as the "air terminals" of a...
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