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Type: Posts; User: electrofelon

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  1. great video. That scenario is an example of them...

    great video. That scenario is an example of them being for the future as a disconnecting means, not put in as a repair (although they might also use one for the repair).
  2. Ok this is starting to make sense. So basically...

    Ok this is starting to make sense. So basically they are not installed "for the future" they were installed for repair and "left in place".
  3. Ahh ok. Why might they be installed? Seems like...

    Ahh ok. Why might they be installed? Seems like they would be killing a lot of customers if they were opened.
  4. what are these things on distribution lines?

    Arrestors maybe? A device to hold line tension fixed at different temps? I dont see them very frequently.
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    TAT 1 thru 11 have all been taken out of service,...

    TAT 1 thru 11 have all been taken out of service, with 12/13 taken out of "normal commercial service", according to wikipedia. Most of the older ones were in service for 22 year, and the newer ones...
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    I was watching a documentary on the first trans...

    I was watching a documentary on the first trans Atlantic telegraph cables, and one of the first attempts they shorted it out by cranking the voltage up too high, but they did not provide specific...
  7. Thread: jw

    by electrofelon
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    MA allows nm above drop ceilings, so maybe they...

    MA allows nm above drop ceilings, so maybe they are more lax on it's other NEC restrictions?
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    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...
  9. 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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    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...
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    6$$
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    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 ...
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    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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    So should be fine for a lighting outlet.

    So should be fine for a lighting outlet.
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    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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    30$$
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    There it is, thanks

    There it is, thanks
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    Are they not now?

    Are they not now?
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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...
  18. 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...
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    6$$
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    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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    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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    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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    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...
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    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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    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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    Nope! Free lunch!

    Nope! Free lunch!
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