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Type: Posts; User: drktmplr12

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  1. Replies
    2$$
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    78

    very typical.

    very typical.
  2. we regularly run into this exact issue because we...

    we regularly run into this exact issue because we use NEC calculations to make additions. there is not always time or money to place a logger. NEC calc's always over estimate the load, and rightly...
  3. you can do it a couple ways. first is you can...

    you can do it a couple ways.

    first is you can put a power meter on it for 30 days that logs demand every 15 minutes. take the max value from that data set and multiply it by 125%. that is your...
  4. How did someone come up with the 1200 amp for the...

    How did someone come up with the 1200 amp for the MCC? You do the same thing with the switchgear. Add up all continuous loads and add 25% of the largest continuous load.
  5. Replies
    10$$
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    1,085

    to expand on this, a one-for-one replacement with...

    to expand on this, a one-for-one replacement with LED technology may not always be practical. pay very close attention to the light temperature and lumen output of the replacement fixture to be sure...
  6. Replies
    2$$
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    1,119

    I don't have books to sell, but I'm going to...

    I don't have books to sell, but I'm going to direct you to a previous thread that has much good insight from many here on the forum.

    best of luck. :thumbsup:
    ...
  7. Thread: New Forum

    by drktmplr12
    Replies
    14$$
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    2,890

    :lol:

    :lol:
  8. Thread: New Forum

    by drktmplr12
    Replies
    14$$
    Views
    2,890

    wife not speaking, how do i proceed? do i...

    wife not speaking, how do i proceed?

    do i power off and back on again?
  9. Replies
    13$$
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    2,360

    part of the art of being a consultant is...

    part of the art of being a consultant is extracting what a customer actually wants from what they are telling you. the tree swing cartoon comes to mind. the worst is when you give them what they...
  10. Replies
    8$$
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    2,172

    From what I understand, Danfoss's HMI is one of...

    From what I understand, Danfoss's HMI is one of the best and easiest to use. I'm not suggesting that you don't need the analog dial, only another possibility. I've also heard their drives are very...
  11. 695.7 has two requirements, one each for starting...

    695.7 has two requirements, one each for starting and running

    Motor starting conditions limit VD to 15% of controller rated voltage at line side of motor controller

    Motor running limits VD to...
  12. Replies
    10$$
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    1,230

    armored cable would likely not fit it seems. :(

    armored cable would likely not fit it seems. :(
  13. OP did not state if the generator was dedicated...

    OP did not state if the generator was dedicated to the fire pump and was the only power source. if true, the generator must be able to carry locked rotor amps indefinitely according to 695.3(A), as...
  14. Replies
    10$$
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    1,230

    Perhaps using armored 4 conductor #12 would help...

    Perhaps using armored 4 conductor #12 would help here since it is technically in its own raceway and therefore physically separated from the. the armor should effectively keep the emf from the motor...
  15. Loaded question because generator sizing depends...

    Loaded question because generator sizing depends on many factors including motor starting code for the fire pump and voltage dip, frequency shift and starting kva capabilities of the genset. these...
  16. Replies
    8$$
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    575

    110.26 (C) requires that gear 1200 A or above,...

    110.26 (C) requires that gear 1200 A or above, over 6 ft wide and with over-current devices, you must have egress (exit) on both sides of the equipment unless you either double the working space...
  17. Thread: One for JR

    by drktmplr12
    Replies
    11$$
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    838

    there is fascinating navy training videos of the...

    there is fascinating navy training videos of the mechanical "fire control computers" they used in the 40's and 50's. at least i find it fascinating :D

    https://www.youtube.com/watch?v=s1i-dnAH9Y4
  18. Replies
    11$$
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    870

    microsoft paint :D you can try searching for...

    microsoft paint :D

    you can try searching for sketchup on google
  19. Replies
    3$$
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    320

    Bid drawings should be 100% complete. Who decides...

    Bid drawings should be 100% complete. Who decides what is 100%?

    As a minimum, you would need to comply with your state statutes in terms of completeness if they are going to be signed/seals and...
  20. Replies
    23$$
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    1,768

    cost of LED fixtures has been dropping for some...

    cost of LED fixtures has been dropping for some time now. the payback period on retrofits should be around 5 years. if businesses are sitting on cash that's a no brainer.

    doesn't take into...
  21. Off-topic-am I the only one who feels floor to...

    Off-topic-am I the only one who feels floor to ceiling glass window is defeated by placing a desk in front of it? :dunce:
  22. Thread: Home Office

    by drktmplr12
    Replies
    25$$
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    5,674

    bose QC on ear or around ear are nice. bear in...

    bose QC on ear or around ear are nice. bear in mind they wont cancel 100% of noise. but they certainly take the edge off.
  23. Replies
    9$$
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    828

    determine the range of opening time for both...

    determine the range of opening time for both breakers for all conceivable currents. compare them to see the amount of overlap. ideally there should be none, but non-adjustable thermal magnetic...
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    5$$
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    497

    they want you to install switches in the ceiling...

    they want you to install switches in the ceiling then change order them to move them to the door. :happyyes:
  25. Replies
    11$$
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    904

    bottom feed, in this case. very good point. we...

    bottom feed, in this case. very good point.

    we find that even with 4X drains and meyers hubs, moisture is still an issue. we have gotten away from ever allowing top entry to 3R or 4X enclosures...
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