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  1. Replies
    86$$
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    Yeah. :slaphead:

    Yeah. :slaphead:
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    86$$
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    Sounds like pretty good safeguards to me. This...

    Sounds like pretty good safeguards to me.

    This discussion ensued because you said isolated inverters are more hazardous. (post #5) You've offered nothing substantive to support that assertion. ...
  3. Yeah, I meant what I said.

    Yeah, I meant what I said.
  4. I suppose one could argue that the requirement is...

    I suppose one could argue that the requirement is for a 'disconnecting means', and so as long as you can manually disconnect the conductors, it's not required that you also be able to manually close...
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    25$$
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    458

    It's too funny. Why is the 'hole' in those...

    It's too funny. Why is the 'hole' in those definitions, rather than in 230.82(6), or in the definition of a service, or in 705.12(A)?

    At least you admitted it's your opinion this time.
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    25$$
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    How can they be service entrance conductors if...

    How can they be service entrance conductors if they are not 'between the terminals of the service equipment and [another point]"?
    Oh yes, by the way I'm quoting the article 100 definitions of...
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    25$$
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    I don't see how you construe the scope you quoted...

    I don't see how you construe the scope you quoted as excluding them. It's always been my opinion that the conductors on a supply side tap are both. That is, both service conductors and inverter...
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    25$$
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    Oh G-d. Seriously? You are "reviving this...

    Oh G-d.

    Seriously?

    You are "reviving this issue"?
    :lol:


    The only indisputably applicable rules are in 705. The 10' rule, I believe, was added to the 2014 code. (I don't have the book...
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    86$$
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    With respect to a PV inverter, you've still got...

    With respect to a PV inverter, you've still got to consider the fact that the device that is closing the circuit is a device that only closes the circuit if all the voltage and frequency parameters...
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    15$$
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    What's ironic is that 'return' makes the most...

    What's ironic is that 'return' makes the most sense in DC applications, and in particular electronics, and yet electronics people have a habit of calling the return 'ground.'

    :slaphead:
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    5$$
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    155

    Reserve a 3ft wide space from floor to ceiling in...

    Reserve a 3ft wide space from floor to ceiling in a room that can provide the NEC required working space, such as the garage or a large utility room.
    For every 10kw above the first 10kw, make the...
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    4$$
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    The Solaredge disconnect does not shut down AC...

    The Solaredge disconnect does not shut down AC power to the inverter, so it could well be energized. Also, depending on how long it's been shut down and whether Rapid Shutdown has been installed,...
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    86$$
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    As I said, we understand what you're talking...

    As I said, we understand what you're talking about, but it has no applicable relevance to PV systems, whatsoever.
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    86$$
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    Right now, DC conductors is 'what the grounding...

    Right now, DC conductors is 'what the grounding is referring to'. The DC system is regarded as a separate system for grounding

    I understand what you're getting at, and maybe the code should be...
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    86$$
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    Except that I'm already counteracting the huge...

    Except that I'm already counteracting the huge momentum of the roller, making it spin slower in the direction it normally spins. The momentum is precisely what I'm engineered to overcome. Also,...
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    86$$
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    And it's also limited by the AC OCPD, of course. ...

    And it's also limited by the AC OCPD, of course. And since the inverter can continuously pass about that much current while operating, it seems reasonable it could withstand the fault current if...
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    86$$
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    I don't believe I've had any trouble...

    I don't believe I've had any trouble understanding what you're saying from the start. I just disagree that it practically applies to PV inverters.



    This, I think, is a horrible analogy, for...
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    31$$
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    Yes, well some inspectors simply don't know the...

    Yes, well some inspectors simply don't know the code as well as most electricians. :rant: And some are willing to read sections you point to, and some aren't.

    Also, if you do have a grounded...
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    86$$
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    'Usually' doesn't seem to apply to PV inverters. ...

    'Usually' doesn't seem to apply to PV inverters. Remember, the voltage and current are going the opposite way.



    He said pretty much the opposite of what you're saying.
  20. Replies
    5$$
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    279

    Who knows? I think we've had this discussion...

    Who knows? I think we've had this discussion before.

    In my opinion the concept is to prevent the equipment from being energized by someone who is working somewhere else and not aware of you. So...
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    86$$
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    First, they describe different things. (see...

    First, they describe different things. (see below)

    I won't debate the merits of which one the NEC should refer to for having certain rules. That depends at least in part on the technical...
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    31$$
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    1,233

    It's pretty vague. If you're on the 2013 CEC...

    It's pretty vague. If you're on the 2013 CEC then there's no 690.47(D) so I would argue that nothing coming from the array is a GEC. If you're on other codes, then maybe you have to have this GEC...
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    5$$
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    A switch cannot be more than two meters (6-7")...

    A switch cannot be more than two meters (6-7") from the floor. Code is 404.8. There's an exception (No. 2) that should get you out of that, but then you also need a readily accessible PV...
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    86$$
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    I get it now. I was being dense. :slaphead: ...

    I get it now. I was being dense. :slaphead:

    I'd be curious to try this with low-end (high impedance?) Fluke meters and see if the voltages are balanced or not. (Not sure when I'll have the...
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    86$$
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    That's not what SolarPro meant, and it's not the...

    That's not what SolarPro meant, and it's not the case with ungrounded DC. It would require a ground fault on both conductors to short circuit the DC source.



    You keep talking about this...
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