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Type: Posts; User: Zee

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  1. Replies
    20$$
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    441

    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....
  2. Replies
    20$$
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    441

    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...
  3. Replies
    20$$
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    441

    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...
  4. Replies
    20$$
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    441

    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,...
  5. Replies
    12$$
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    458

    :weeping: Wow, never seen it. Good to see.

    :weeping: Wow, never seen it. Good to see.
  6. Replies
    20$$
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    441

    :eek: That is what can kill you. Why is solar...

    :eek:
    That is what can kill you.

    Why is solar always worked on hot?
  7. Replies
    12$$
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    458

    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....
  8. Replies
    12$$
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    458

    I agree with Jben. I think it is best to state...

    I agree with Jben.
    I think it is best to state the facts, and not advocate it. And the facts are: no need to clean ever. (at least in CA)

    2 exceptions:
    1. extreme pollution
    ( e.g dry plowed...
  9. Replies
    26$$
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    828

    good to know! i tie into many center fed panels,...

    good to know! i tie into many center fed panels, and this is good background.
  10. Replies
    28$$
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    6,323

    Good points. Answers: 1. Re. J-boxes:...

    Good points.
    Answers:
    1. Re. J-boxes: Soladeck. Flashing and JB all in one. "flashes" right into coursework of shingles on resi. roofs. Not NEMA 4, but built for sloped roofs, will never leak....
  11. Replies
    25$$
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    1,225

    don't know. Used EMT for 13 years.

    don't know. Used EMT for 13 years.
  12. Depends on who is asking:roll: Often, I...

    Depends on who is asking:roll:

    Often, I indicate the following on the single line diagram of my permit drawings:
    (E) MSP, 200 A rated
    (E) 2p175A Main Breaker

    (N) 2p60A PV breaker

    You can...
  13. Replies
    25$$
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    1,225

    CArultch and Jben said it: - grounding bushings...

    CArultch and Jben said it:
    - grounding bushings
    - new, direct-burial rated lugs.
    - EGC inside the conduit.

    No boxes needed.

    EGC inside, will look better too, without an EGC hanging...
  14. Replies
    25$$
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    1,225

    Agree with Jaggedben, PVC is absolutely to be...

    Agree with Jaggedben, PVC is absolutely to be avoided on rooftops.
    1. PVC changes in sunlight to become less flexible and more brittle and can shatter from minor impact....within a year or two.
    ...
  15. True. However, the OP does show a drawing of a...

    True.
    However, the OP does show a drawing of a "PV SUBPANEL" and also a "MAIN PANEL" rated 200A .....where the 60A of PV goes.

    Also not clear if 200A main breaker or 200A rated panel???
    It 's...
  16. Replies
    5$$
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    305

    ...and in the future consider a DC string...

    ...and in the future consider a DC string inverter AFTER the conduit run.
    This will bump your voltage to approx. double (good)
    AND
    your amperage down to approx. half (good).....
    and a win-win...
  17. Good point. It does look like a load side...

    Good point. It does look like a load side connection to me...in which case 60 A of PV is too much in a 200 A MSP.

    Matter of fact to make it worse it seems to be drawn to show the 60A brkr is...
  18. Replies
    26$$
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    828

    If he reduces the main breaker size to 175A can...

    If he reduces the main breaker size to 175A can he add 25A of PV?
  19. Replies
    5$$
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    338

    Just to be 100% sure: If what you have is a...

    Just to be 100% sure: If what you have is a "split service panel" then i agree with above posters.
    (Ie a panel with space for two breakers, and each breaker is a service disonnect / "main...
  20. Thread: 705.12 A

    by Zee
    Replies
    14$$
    Views
    583

    Well....:p OK...let's run with what the...

    Well....:p OK...let's run with what the inspector wants.
    You do, in fact, meet the 120% rule. Very, very handily.

    120% rule says ,
    The sum of breakers SUPPLYING power to the busbar cannot...
  21. Replies
    3$$
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    242

    BTW - More of a nitty-gritty, nuts and bolts type...

    BTW - More of a nitty-gritty, nuts and bolts type comment: you might consider upgrading the old inverter to a single, new, 10 yr warranty, safer, more reliable, higher kw inverter that is equipped...
  22. Replies
    3$$
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    242

    I don't see why not. This issue usually revolves...

    I don't see why not. This issue usually revolves around the permissibility of having more than one PV AC disconnect. That is either the PV Breaker in the main or a fused AC Disconnect..
    However,...
  23. Thread: 705.12 A

    by Zee
    Replies
    14$$
    Views
    583

    I am having a really hard time understanding your...

    I am having a really hard time understanding your situation. Can you clarify? photo or sketch is best.

    Right now it does seem like you have a "split service" panel. Ie two @ 2 pole breakers can be...
  24. Replies
    6$$
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    694

    That is great. I wonder how long you can keep...

    That is great.

    I wonder how long you can keep these running!

    So, you did a temporary swap of the GFDI board? Could you get a new and permanent replacement?
    edit: Oh I see your attachment, you...
  25. Replies
    12$$
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    691

    40 amps is correct as breaker size for the 5000,...

    40 amps is correct as breaker size for the 5000, 6000 and 7700 inverters each.

    However, to save you wire size..... and labor and cost:
    Consider using as many
    3800
    7600
    and 11400 inverters as...
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