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Type: Posts; User: electrofelon

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  1. Replies
    3$$
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    113

    I always have a little debate with myself on what...

    I always have a little debate with myself on what size riser to use for a "400 amp" service or multi gang meter socket service. Of course they are theoretically sized to the load, but I never get...
  2. You can put the inverter inside, but you cant put...

    You can put the inverter inside, but you cant put the solar panel inside :lol:
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    10$$
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    482

    I am not sure I agree with that. I think the...

    I am not sure I agree with that. I think the difference is probably the distinction between "design that requires a PE" verseus just "design". I do lots of design in Washington State. There is no...
  4. Replies
    6$$
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    250

    Thinking about it some more, and I agree you...

    Thinking about it some more, and I agree you could land a 10 foot tap on a MLO panel if the ampacity of the tap is greater than or equal to the bus rating of the panel. The panelboard would be the ...
  5. Replies
    6$$
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    250

    IMO you dont need 408.36 to require a single OCPD...

    IMO you dont need 408.36 to require a single OCPD for the tap, but yes it certainly comes into play for panelboards depending on the bus rating and the size of the OCPD protecting the feeder (you...
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    26$$
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    1,056

    So should be fine for a lighting outlet.

    So should be fine for a lighting outlet.
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    1$$
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    119

    Correct. There is a possibility that you could...

    Correct. There is a possibility that you could have a bonding jumper to something, but most of the time any bonding for say a pull box is done by bonding to the grounded conductor in the box.
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    26$$
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    1,056

    There it is, thanks

    There it is, thanks
  9. Replies
    26$$
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    1,056

    Are they not now?

    Are they not now?
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    26$$
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    What first comes to mind is that fixture boxes...

    What first comes to mind is that fixture boxes have #8 screws not #6, but I am not sure 8's are required for fixtures anywhere. 410.36(A) sends you to 314 but nothings specifically requires #8...
  11. What exactly do you mean by "an issue"?...

    What exactly do you mean by "an issue"? Ungrounded systems are fairly common in industry. Everything is still bonded together, and probably unintentionally earthed anyway thru inevitable attachment...
  12. Replies
    6$$
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    250

    For a 25 foot tap (240.21(B)(2)) the tap...

    For a 25 foot tap (240.21(B)(2)) the tap conductors need to terminate on a single OCPD. For the 10 foot tap rule ((B)(1)) the wording isnt the best, despite being changed recently, but IMO you still...
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    10$$
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    482

    I dont think it is specifically any certain...

    I dont think it is specifically any certain person's responsibility to do the FC Calcs, unless local law is such that a PE is required. If a PE is contracted to do the design, seems like he should...
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    22$$
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    899

    We come across things in the field all the time...

    We come across things in the field all the time that are non compliant. I can't make a customer pay me to fix it, nor can the AHJ force the client to fix it (generally, there are probably exceptions...
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    3$$
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    248

    This comes up in solar a lot. I agree...

    This comes up in solar a lot. I agree manufacturers use the same bus for different main breakers, but the manufacturer rarely will tell you or document this.
    I had some 125 and 250A Siemens...
  16. Replies
    22$$
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    899

    225.30(B)(1) could be an exception to the one...

    225.30(B)(1) could be an exception to the one issue. It means exactly what it says, I am not sure how to explain it further. If this is existing, then there likely isnt an issue. If you are doing...
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    3$$
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    300

    Sure and Sure - although might want to check with...

    Sure and Sure - although might want to check with the POCO if these are unmetered conductors. Often such a setup is where the service point is, but it could be completely customer owned with the...
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    2$$
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    204

    Nope! Free lunch!

    Nope! Free lunch!
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    6$$
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    391

    I think we have to more specific. If that 24v is...

    I think we have to more specific. If that 24v is class 2, I agree, but there is no general restriction that certain voltages be isolated.
  20. Replies
    14$$
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    749

    Pretty much anything with a main will be rated...

    Pretty much anything with a main will be rated 22k, and series rate with 10k branches.

    (As I said previously, there are a few exceptions, mostly when using "regular" 10k as a main, say when...
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    13$$
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    828

    I would tell a trainee that drilling and pulling...

    I would tell a trainee that drilling and pulling thru holes is quicker than stapling so do the former whenever possible (yes do not drill trusses).
  22. Another way to think about it: note there are...

    Another way to think about it: note there are multiple requirements that are often met with the same device. You typically have an ocpd to protect the inverter output conductors, an ac disconnecting...
  23. Replies
    14$$
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    749

    That's interesting they commit to that. Usually...

    That's interesting they commit to that. Usually POCO's are like, "fault current is almost always like 100k, at least" ;)
  24. Cool. Please keep us posted. I'm always curious...

    Cool. Please keep us posted. I'm always curious how these things turn out.
  25. Replies
    29$$
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    2,220

    That rings a bell, that there are different...

    That rings a bell, that there are different ranges based in published efficiency - I have seen that before. But take a look at this and tell me what the difference between "rated" and " operating"...
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