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  1. Replies
    16$$
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    Yes, 'Earth leakage' is typically 30 ma in EU...

    Yes, 'Earth leakage' is typically 30 ma in EU standards I have dealt with, so a class A or B GFCI would meet the manufacturer requirement. Class 'B' would be the most correct.
  2. I happen to be doing some busbar calcs and read...

    I happen to be doing some busbar calcs and read this.
    If its 1/8" X 3/4" bussbar (119 kCMIL) the factory lists it as 87.7 micro ohms per ft.
    Assuming a 200A load, one inch distance and a 75C...
  3. Thread: 2phase 4wire

    by tortuga
    Replies
    27$$
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    1,338

    I typically use a Siemens HF463 for a 100A 4 wire...

    I typically use a Siemens HF463 for a 100A 4 wire two phase.
    https://mall.industry.siemens.com/mall/en/us/Catalog/Product/?mlfb=US2%3AHF463

    The 200% Neutral kit is a nice addition for 5 wire two...
  4. Thread: 2phase 4wire

    by tortuga
    Replies
    27$$
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    1,338

    Here are some historical photos to give you a...

    Here are some historical photos to give you a sense of scale:
    https://www.atlasobscura.com/articles/magnificent-photos-of-power-stations-in-the-early-1900s

    Here is some detailed history of how...
  5. Thread: 2phase 4wire

    by tortuga
    Replies
    27$$
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    1,338

    Generation Plants in south eastern PA were all...

    Generation Plants in south eastern PA were all put in during the brief heyday of two phase, once the heavy infrastructure was installed there is little point in changing it, as the only dis-advantage...
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    Sorry that was not clear perhaps I am...

    Sorry that was not clear perhaps I am overthinking this
    Assuming a 72" long standard horizontally installed 8X8 wireway two 3" and four 2" conduits are punched into the bottom.
    376.23(B) uses...
  7. Replies
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    376.23(B) Wireway as pullbox

    Greetings all I am assuming a wireway automatically is a "pull box" for any conductor enters and exits without a splice, do you all concur?

    376.23(B) States


    If I have a wireway that is...
  8. Thread: 2phase 4wire

    by tortuga
    Replies
    27$$
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    1,338

    Good ol' two phase, my home town favorite,...

    Good ol' two phase, my home town favorite, Siemens used offer 5 wire two phase panelboards in there P1-5 Series.
    Select 'Voltage and System type' = X when ordering P 10-15 of my old 2007 speedfax....
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    I would propose the CS6365 for food truck...

    I would propose the CS6365 for food truck builders and those of us wiring food trucks.
    It's 125/250V 1 PH and gives you the added protection of locking.
    Its common on generators so if the vendor...
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    219$$
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    Interesting discussion, that is an excellent...

    Interesting discussion, that is an excellent point.
    Jap: they recommend drinking 8 glasses of water a day. As long as you wire the mwbc correct you wont smoke.:)
  11. Thread: Engineer vs EC

    by tortuga
    Replies
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    Yeah you might be right. I got slightly motivated...

    Yeah you might be right. I got slightly motivated to glaze over some fine print.
    Check your fine print or ask your agent, I am sure policies are all different, our contractors policy only covers 5...
  12. Thread: Engineer vs EC

    by tortuga
    Replies
    10$$
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    990

    :thumbsup: Thats what I would do. Standard...

    :thumbsup: Thats what I would do.



    Standard contractors liability insurance does not cover "Professional Liability" for any 'design build' work. The key there is 'design'. Your not insured as a...
  13. Thread: EM Inv.

    by tortuga
    Replies
    6$$
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    494

    See 700.10(B)

    See 700.10(B)
  14. Thread: Bay Lighting

    by tortuga
    Replies
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    2,350

    Those are indeed cool systems we service a number...

    Those are indeed cool systems we service a number of retail places that originally had them, but a bit of a headache to get a simple time clock or occupancy sensor hooked in to one of those pulse...
  15. Thanks Larry these look good...

    Thanks Larry these look good
    http://gmlighting.net/24VDC_SlimEdge_Modular_Lighter
  16. Residential cabinet lighting recommendations?

    Greetings all I am curious what you all are using or specifying for in cabinet lighting these days.
    I am looking for something in particular that can be controlled on its low voltage side by a low...
  17. So your going to make me look back in time:...

    So your going to make me look back in time:
    https://forums.mikeholt.com/showthread.php?t=177794&p=1751745#post1751745
    it was iwire thanks for that tip iwire.
  18. Replies
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    I'll chime in that you could also use a VFD, we...

    I'll chime in that you could also use a VFD, we commonly do.
    I see 415Y230V 50hz equipment often enough.
    If they can ship it 60HZ or if its mostly a resistive load (like semi conductor oven) you...
  19. Thats a good solution. It comes up quite often...

    Thats a good solution. It comes up quite often for us, I believe it was Larry or someone on here that turned me on to http://www.sillites.com/newconstruction.php
    Another option is to hide plug mold,...
  20. Thread: 230.40

    by tortuga
    Replies
    5$$
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    870

    230.70(A)(1)

    Seems like 2014 230.70(A)(1) would not be met as it shows the service conductors traveling a distance thru the building. Tenant C does not have access to service disconnect? 2014 230.72(C)
    Also do...
  21. Replies
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    The question you all seem to be debating is...

    The question you all seem to be debating is should UL standards drive the NEC
    or should the NEC drive the UL and other construction & performance of equipment standards?

    The NEC used to cover the...
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    I would guess an EV charger will run at night, or...

    I would guess an EV charger will run at night, or could be programmed to or monitor the mains via a smart meter and only run at max when likelihood of other residential loads is nill, and thus would...
  23. Thread: 230.71(A)

    by tortuga
    Replies
    48$$
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    4,669

    I am skeptical that the requirement for a single...

    I am skeptical that the requirement for a single main disconnecting means will enhance the safety of services.
    No incident reports were mentioned, like with AFCI's there were tons of residential...
  24. Thread: 230.71(A)

    by tortuga
    Replies
    48$$
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    4,669

    Well I took a look at the new version of IEEE...

    Well I took a look at the new version of IEEE 1584-2018 today and section 4.11 states:


    I remain skeptical.
  25. Replies
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    Sounds like a 300A service. We usually run...

    Sounds like a 300A service. We usually run Aluminum for service entrance conductors and CU for the grounding electrode conductor, for a 300A residential 350kCMIL Al service conductors and #2 CU GEC....
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