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Type: Posts; User: zbang

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  1. Replies
    6$$
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    259

    Depends on which number you're referring. IEEE...

    Depends on which number you're referring. IEEE assigns things like Ethertypes and OIDs (the first part of an Ethernet address), regional bodies assign the first part of an IMEI and manufactures...
  2. Thread: UPS Install

    by zbang
    Replies
    20$$
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    1,183

    All of what Paul said. A few months ago, three...

    All of what Paul said.

    A few months ago, three of us moved a 22,000# lathe about 120' using only skates, bars, a 5# deadblow hammer (for steering), and a forklift (for pulling). Sure, it took a...
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    12$$
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    500

    Wisdom there, and don't blindly assume any other...

    Wisdom there, and don't blindly assume any other place does it the same way.
  4. Replies
    12$$
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    500

    What's commonly used (in your area) may not...

    What's commonly used (in your area) may not actually be a standard. OTOH, UL-508 is a standard and does define a color code for certain things (check pg 26 of...
  5. Replies
    8$$
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    587

    I really wish more people left some sort of...

    I really wish more people left some sort of notes, or even a trail of breadcrumbs, when they change a circuit.

    Or even changed the labels on a panel when the loads change. (The breaker that says...
  6. Thread: Fiber optic?

    by zbang
    Replies
    18$$
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    904

    There have been fiber-connected remote shelves...

    There have been fiber-connected remote shelves for years (I DEinstalled a Mitel SX2000 cabinet over 15 years ago). Certainly most newer systems will be IP-based.
  7. Thread: Fiber optic?

    by zbang
    Replies
    18$$
    Views
    904

    Very much. If they did have copper telecom, there...

    Very much. If they did have copper telecom, there should have had proper protectors at each end but those will only go so far.

    At this point, I'd never run new copper telecom between buildings....
  8. Most rods can be removed with a moderate-size...

    Most rods can be removed with a moderate-size pipe wrench and a bottle jack (or a 4x4 and a 6' steel bar). It just takes a little time.

    (or a chain and forklift will do it, too)
  9. Thread: 2phase 4wire

    by zbang
    Replies
    27$$
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    1,337

    Kind of late to the party, but I think 2-phase...

    Kind of late to the party, but I think 2-phase comes up here about every 9-12 months. Mostly in Center City, but IIRC there are still a few islands of it elsewhere (Hartford CT?, Niagara Falls?),
  10. Replies
    28$$
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    2,564

    If you're really curious, do a fall-of-potential...

    If you're really curious, do a fall-of-potential test (measure the voltage drop across the breaker)- usually shouldn't be more than a couple of millivolts. Multiply that by the current and you have...
  11. Replies
    11$$
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    584

    And they might meg out fine until they're being...

    And they might meg out fine until they're being bent around to connect the new compressor. If it's a fairly easy pull, I'd just replace them.

    What size are we talking about? Heck of a difference...
  12. Replies
    14$$
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    1,564

    I'd suggest that, too, but unless you're doing a...

    I'd suggest that, too, but unless you're doing a general infrastructure (not sites specifically for food trucks), you end up over-provisioning since IME most trucks don't need even 30A, and only...
  13. Thread: Generator Inlets

    by zbang
    Replies
    16$$
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    981

    The only thing the director couple possibly hang...

    The only thing the director couple possibly hang their hat on is the idea of "qualified personal and written procedures". In my area, that and $3 will get you a cup of coffee (and maybe some change)....
  14. Replies
    219$$
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    6,398

    Not often, but I'm getting ready to install one...

    Not often, but I'm getting ready to install one in the "bedroom" that I use as my office/workroom. Actually, it might be a L14-30R since I think I already have that and a PDU that matches and that...
  15. Replies
    38$$
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    1,944

    Orange you going to give us the code section for...

    Orange you going to give us the code section for that?
  16. Replies
    28$$
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    1,326

    That's also my thinking. Needs of the many (to...

    That's also my thinking. Needs of the many (to move around and maybe get out) over needs of the few.
  17. Replies
    38$$
    Views
    1,944

    Add two little bits- If you have a "high-leg...

    Add two little bits-
    If you have a "high-leg delta", then the high leg needs to be orange (110.15 and 230.56).

    If the facility has a designated color code, such as 208/120v hots are...
  18. Replies
    14$$
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    1,564

    They do..... L14-20 (supply) to 30amp "rv"...

    They do..... L14-20 (supply) to 30amp "rv" crowsfoot, then that to a 5-15; I think I've seen the reverse, too. (I hope they never have an opportunity to tie in bare ends.)

    Or this beaut-
    23119...
  19. Replies
    14$$
    Views
    1,564

    That works well if there is someone to wrestle...

    That works well if there is someone to wrestle spider boxes or adapters for the others; if they're going to pull-up/hook-up, better to have what they're most likely to use directly. (I know of one...
  20. Replies
    14$$
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    1,564

    If you search back through the forums, you'll...

    If you search back through the forums, you'll find many threads complaining about food trucks & outdoor caterers :D.

    I've seen-
    5-15/5-20 (from 1 to maybe 6 separate circuits)
    L14-20
    L14-30...
  21. Thread: DC GENERATOR

    by zbang
    Replies
    17$$
    Views
    1,026

    It will certainly depend on the use and how...

    It will certainly depend on the use and how tightly you want to regulate. For instance, with a welding generator, you don't much care about the open-circuit voltage as much as about the current...
  22. Replies
    4$$
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    620

    Often modifying the bus (drilling) would void a...

    Often modifying the bus (drilling) would void a UL/NRTL listing. (Is this for the pump station and is the device really an MCC or is it the main switchboard?)
  23. Replies
    18$$
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    1,125

    Yep, we have a few under the various bathroom...

    Yep, we have a few under the various bathroom sinks. One less pipe, don't take up any extra space, etc. They're great for that application.
  24. Replies
    9$$
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    729

    OK, you have a solidly-grounded wye system....

    OK, you have a solidly-grounded wye system. Period. The system, which includes the MCC and whatever it's feeding. (Where is the service disconnect? In the MCC? Perhaps we'd be better off calling it...
  25. Replies
    9$$
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    729

    That's what I was getting at, Jraef said it...

    That's what I was getting at, Jraef said it better; the likelihood of an un-grounded feed to the MCC is quite small.

    That also plays to the generator questions, if the source's (be it a service or...
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