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  1. Can you switch inverters around so that you get...

    Can you switch inverters around so that you get down to 200A?

    I would think so, from 208.4 Amps.... you're getting mighty close.
    Usually you would find that you have extra capacity left over on...
  2. Thread: 110.21(B)

    by Zee
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    Yes, my unstated point too: plenty of labels warn...

    Yes, my unstated point too: plenty of labels warn of high voltages already, ungr. circuits, line and load energized etc, . And on larger systems labelling well becomes worthwhile.
  3. Thread: 110.21(B)

    by Zee
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    I stick a label on the outside to appease AHJ......

    I stick a label on the outside to appease AHJ...
    .....and one on the inside to appease my conscience and avoid all destructive UV.

    Sharpie will fade and burn out. So will my labels (when don't...
  4. Only experience was years ago...when solar was...

    Only experience was years ago...when solar was new...we just tapped into busbars with any lugs that fit.....but it won't past muster now.

    My experience is when i call a manufacturer of equipment...
  5. Thread: 110.21(B)

    by Zee
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    Yup. Says outdoor. How do you label V and...

    Yup. Says outdoor.

    How do you label V and Amps?
  6. Replies
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    All this means is you have to run two dc circuits...

    All this means is you have to run two dc circuits as OP mentioned, instead of one. Say...12 and 18 KW each.
    Everything points in that direction..... there is a Connection Unit, as SMA calls it, a CB...
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    From SMA Data Sheet: "Max. Input current / per...

    From SMA Data Sheet:
    "Max. Input current / per MPP tracker ........66A/33A"

    That indicates max 33 Adc per input. And 66 Adc only if you use both inputs.
    ---------------------------------------...
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    What they said. Also: Consider wire, sure....

    What they said.

    Also:
    Consider wire, sure. However, also consider conduit size in terms of extra work and cost. It' s been a while since I used larger than 1/2" EMT!:roll:

    Before, I used to...
  9. Replies
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    FYI: on DC systems use Vmp and Imp for...

    FYI:
    on DC systems use
    Vmp
    and
    Imp for Voltage Drop calcs!
    (not Max Sys. V, Voc or Isc)
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    If Blake writes it, it is well though out.:D...

    If Blake writes it, it is well though out.:D
    ---------------------
    And remember: every time you up the Volts, you ALSO drop the Amps! Double benefit for V drop.

    On a recent ground mount I had...
  11. Thread: PV MODULE

    by Zee
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    30 years.

    30 years.
  12. Thread: PV MODULE

    by Zee
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    WHOA! I HEAR YOU! I would just add:...

    WHOA! I HEAR YOU!
    I would just add:
    Statistically: Panels "fade" about 0.5% a year. After 8 years, their output should be about 5% less.
    How many panels?
    What if any inverter?
    480V???
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    Right. Thank you. May i recommend any number...

    Right.
    Thank you.
    May i recommend any number of excellent forums for economics or pol.sci. debates. These are all valuable points and need to be made...elsewhere.
    This is an Electrical Code...
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    I would never support taxes for solar. There is...

    I would never support taxes for solar.
    There is one government incentive: a tax credit of 30%.
    That is actually part of the taxes you pay being refunded back to you.
    And now i am guilty of...
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    Thank you! I do pride myself on appealing to the...

    Thank you! I do pride myself on appealing to the self interest of my customers along with serving my own.:)
    Now, i need to stop spending countless unpaid hours on this forum!
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    Some of us don't recommend ANYONE wash them. How...

    Some of us don't recommend ANYONE wash them. How is that trying to secure work for ourselves? And that in many cases we do show them if and when safe.
    But you know what i am sure you are right in...
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    Well...i may make 100 bucks for a service call....

    Well...i may make 100 bucks for a service call. Say it's $200.
    Takes 2 hours of my day, door to door. ( drive out, set up ladder, get hose up there, clean and invoice). I can make almost $10,000...
  18. Congrats!

    Congrats!
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    It is a superior solution. I agree. I think it' s...

    It is a superior solution. I agree. I think it' s admirable you go through the trouble of installing them, as they are not required, but help down the line.
    Me.....I am cheap, lazy, and fast....
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    But our point is: there is no V at "cell level",...

    But our point is: there is no V at "cell level", until the panels are mounted.
    During installation we should
    1. have panels go on LAST and
    2. have GFDI fuse removed for installation safety (on...
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    IF a CB is live and cannot be reasonably shut...

    IF a CB is live and cannot be reasonably shut down, a good idea is to remove the GFDI fuse!
    If you are lucky you are already working on an ungrounded system where that is unnecessary.

    Then V...
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    s

    Yes, I appreciate your response and agree...for a service call. But OP mentions ALWAYS. During install there is no reason to ever work on any part of the DC live. The CB should be all wired up,...
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    :weeping: Wow, never seen it. Good to see.

    :weeping: Wow, never seen it. Good to see.
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    :eek: That is what can kill you. Why is solar...

    :eek:
    That is what can kill you.

    Why is solar always worked on hot?
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    One more thing: I always use the following...

    One more thing:
    I always use the following analogy when i hand off a job:
    when you squat and look straight across the surface of a polished coffee table you will see any dust..... even a speck....
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