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Type: Posts; User: JST

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  1. Replies
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    Sounds like you need to start making diagrams of...

    Sounds like you need to start making diagrams of what is going on, and following wires, checking everywhere and everything. Start by linking as many outlets and lights as possible, to their...
  2. If you do not recut that vertex with some...

    If you do not recut that vertex with some clearance, you may find that the "point" of the mating part is riding on it.

    That's especially true if you had to take off a fair bit of material when...
  3. Your pad on a tongue depressor (or similar) is...

    Your pad on a tongue depressor (or similar) is likely the best plan. Make sure it can get to the back of the dovetail and coats well there.

    I've never used a roller but a couple times, and didn't...
  4. Motor has two coil sets, but can be wired 3 or 4...

    Motor has two coil sets, but can be wired 3 or 4 wire, usually, depending on what you have available as a source. Either way it is still 90 deg phase difference.

    A 3 wire motor is harder to use...
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    It's not intended to conduct current. But it...

    It's not intended to conduct current. But it can, if the supply is a "ground return" type, as is used some places way out in the sticks where customers are very scattered and far apart. That's used...
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    The 6 wire motor is a very good possibility. A...

    The 6 wire motor is a very good possibility. A motor listing 220 and 380V is definitely a 6 wire motor, doing a wye-delta voltage change.

    They really messed up that data plate. And for no good...
  7. If you want to enough, or happen to have the...

    If you want to enough, or happen to have the transformers laying around, you can hook up the classic "Scott" connection and give it 2 phase power.

    Be the only one in town with real 2 phase power!
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    Yep...... I knew what had to be going on, and...

    Yep...... I knew what had to be going on, and checked for it. I figured there might be some, but I was surprised at how much there was, since we didn't have all that much turned on, just some...
  9. There is also a "volume" question. If you have...

    There is also a "volume" question.

    If you have ONE nice, or reasonably rare good lathe with accessories to get rid of, you can often find "that guy" who wants it badly enough to pay top dollar.
    ...
  10. The center tap on one winding becomes the ground...

    The center tap on one winding becomes the ground point for the secondary, yes. It gets grounded to whatever NEC ground you have, building steel, the green wire of the 480 supply, a etc. Yes, pick...
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    We had that when we moved in, blinky lights. I...

    We had that when we moved in, blinky lights. I took a look at the wires, and realized that there was a copper wire crimped to a wire from the peckerhead, and a copper wire crimped to the drop wire,...
  12. Replies
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    Ideally, individual checking and re-forming is...

    Ideally, individual checking and re-forming is good. But it is WAY too "invasive" for standard use.

    Using the bus terminals that are provided for an external brake unit should be fine.

    Use of...
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    The tag has been altered from 3 phase, to 1 phase...

    The tag has been altered from 3 phase, to 1 phase by overstamping the 3 with a 1.

    Hard to know what was done, exactly. It may be as implied, that the 3 phase motor was just re-wired to start up...
  14. The supply type is mostly irrelevant if you are...

    The supply type is mostly irrelevant if you are installing a transformer to get your desired output.

    The secondary of a transformer is a "separately derived system" with no inherent relation to...
  15. What does a generator provide? What is a "high...

    What does a generator provide? What is a "high load"? How long is a string.....?

    Voltage and frequency control is what a generator DOES. "Load" is current flow.

    So they may not be too bad,...
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    Lights that fail rapidly are a clue to possible...

    Lights that fail rapidly are a clue to possible neutral problems.

    Very possible with the wiring type that has two hots and one neutral (known as a "multi-wire" circuit). Something that shares...
  17. Some third harmonic will not bother rectified...

    Some third harmonic will not bother rectified supplies, as long as the peak is high enough.

    But if the genset does not like to be overloaded at all, it may not be the best for a rectified supply. ...
  18. It sounds like a variety of induction generator. ...

    It sounds like a variety of induction generator. Has to have a magnet in it somewhere to get it going. The reference to capacitor excitation is a clue.

    Yes they "work". Used lots of places....
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    Wigginton tester, and a sensor device that beeps...

    Wigginton tester, and a sensor device that beeps when it senses live wires nearby.

    IDEAL INDUSTRIES INC. 61-065 Vol-Test Voltage Tester, CATIII for 600v: Wiggy Voltage Tester: Amazon.com:...
  20. Replies
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    When I do that, and I have always "mapped" houses...

    When I do that, and I have always "mapped" houses I have lived in, I use a LAMP, with a 60 watt bulb.

    Voltmeters will fool you. Even analog ones can fool you, although they are generally more...
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    Neutral issues cause many mysteries, and damaged...

    Neutral issues cause many mysteries, and damaged equipment.

    When an old house is "rewired", it is not unknown for the visible modern cable to end up being connected to the old knob and tube wiring...
  22. VFDs and computers etc rectify the AC as the...

    VFDs and computers etc rectify the AC as the first operation. They really do not need super clean AC, despite "urban legends" to the contrary.

    Really dirty AC with huge spikes, etc might cause...
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    They look like overloads, and would act to open...

    They look like overloads, and would act to open the contactor, normally by opening the control power to the contactor.. That could have something to do with your problem.

    That bluish stuff, is it...
  24. Thread: Help please

    by JST
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    421

    Closed due to meaningless title (admin rules)

    Closed due to meaningless title (admin rules)
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    The cutouts can develop a bad connection, or even...

    The cutouts can develop a bad connection, or even be damaged when installed. After that, the high resistance of a bad connection will often cause them to open after some undetermined time. ...
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