Search:

Type: Posts; User: Zee

Page 1 of 8 1 2 3 4

Search: Search took 0.22 seconds.

  1. Replies
    16$$
    Views
    396

    Yes to your original Q's. One caveat: 40 amps...

    Yes to your original Q's.

    One caveat: 40 amps PV max IF you do not reduce main breaker rating.
    (I am currently reducing main breaker from 200A to 175A. That gives me 25 plus amps = 65 A.)
    ...
  2. Thread: Should I?

    by Zee
    Replies
    9$$
    Views
    398

    I assume you are an electrician? If so, I've...

    I assume you are an electrician?
    If so, I've always thought that - of all trades - they are best suited to do quality solar installs.
    The roofing and structural aspects are negligible.... and if...
  3. Replies
    3$$
    Views
    258

    yup. Your logic is good. Only EGC in rack on...

    yup.
    Your logic is good.
    Only EGC in rack on dc systems.

    However, If it is a MICRO inverter system with the older micro-inverters.... then a GEC is needed on roof!
    "Maybe that is what you...
  4. Replies
    28$$
    Views
    902

    Great response Jben. It helped me too. Are we...

    Great response Jben. It helped me too.
    Are we striking a ground rod also for every "line side tie" ? (AKA supply side connection)?
    I am told I should.
  5. Replies
    5$$
    Views
    360

    AC disconnect within sight of inverter.

    AC disconnect within sight of inverter.
  6. Replies
    8$$
    Views
    763

    You just need adequate space in the DC Disco. to...

    You just need adequate space in the DC Disco. to transition. The typical Square D HU361 dc disco (30A, 3 pole, unfused) has adequate space.

    I take it this is a grounded system?

    (SIDENOTE: I...
  7. Replies
    7$$
    Views
    502

    What are your inverters?

    What are your inverters?
  8. Replies
    7$$
    Views
    502

    done it myself before. cost 400 bucks for cutler...

    done it myself before. cost 400 bucks for cutler hammer..... i believe, in my case.
    not cheap for a breaker.
    BUT, beats a service change.
  9. Replies
    6$$
    Views
    512

    Thanks kwired Golddigger and jaggedben, Kwired:...

    Thanks kwired Golddigger and jaggedben,
    Kwired:
    that was what i was wondering, is a disco switch before meters even allowed? Sounds like, then,
    1. yes, per NEC
    2. maybe per POCO.

    Golddigger:...
  10. Replies
    6$$
    Views
    512

    Main Disconnect before meters

    I have a situation i do not understand.

    I would like to tie in a (N) 2p50A PV breaker.
    However the 100 AMP fused and rated, main switch is on the UTILITY side of all the meters.
    The...
  11. 1. yes 2. don't know. (I land combined AC...

    1. yes
    2. don't know.
    (I land combined AC EGC/DC GEC in "associated equipment".
    I interpret that term widely: wherever I land PV breaker.)
    3. don't know
    4. yes.
    (Given 2. i must rely on (E)...
  12. Replies
    13$$
    Views
    694

    Yes, I agree. Hopefully he can tap the wire...

    Yes, I agree. Hopefully he can tap the wire itself and not land in the terminals.
  13. Thread: 110.21(B)

    by Zee
    Replies
    3$$
    Views
    298

    1. I use Hellerman Tyton, pre-printed labels...

    1. I use Hellerman Tyton, pre-printed labels for the 90% of my labels that are worded the same on every install.
    I trust their quality a bit more than mine, below.

    2. For the custom made...
  14. Replies
    13$$
    Views
    694

    But the conductors form the meter to the main...

    But the conductors form the meter to the main would be part of the listed panel assembly if it is a combination meter/main panel, right? In fact, these are often bars.

    In California these combo...
  15. Replies
    12$$
    Views
    582

    In a way, pre-2014 NEC, the conduit containing...

    In a way, pre-2014 NEC, the conduit containing the pv system conductors (DC) is treated kind of like a service drop conduit. After all, you are right, they are both "permanently" energized, so...
  16. Thread: DC Disconnect

    by Zee
    Replies
    11$$
    Views
    524

    1. Sure! 2. You got to what i meant about...

    1. Sure!

    2. You got to what i meant about ungr. systems: make sure to interrupt + and - if ungrounded, that is all.

    3. Yes, two poles of the Square D for + and - .....BUT NOT the SIEMENS!...
  17. Thread: DC Disconnect

    by Zee
    Replies
    11$$
    Views
    524

    In addition to the excellent points made above,...

    In addition to the excellent points made above, Google the following document:

    (Square D)
    Data Bulletin
    3110DB0401R11/07


    Direct Current and Photovoltaic Systems
    Applying Heavy Duty Safety...
  18. Replies
    19$$
    Views
    847

    No problem. I certainly agree with you that...

    No problem.

    I certainly agree with you that finding a cable solution would be ideal to run from trunk cable, under array, to j box.
    Especially when the alternative is running trunk cable with its...
  19. Replies
    19$$
    Views
    847

    A couple more Q's: ---So, a single 12 x 12...

    A couple more Q's:

    ---So, a single 12 x 12 jbox for all 91?
    ---All 91 panels are in one physical array?
    That would be a lot of j-boxes to mount, ground and splice in......i see....

    ---How do...
  20. and, my understanding is that conduit outdoors is...

    and, my understanding is that conduit outdoors is "wet conditions" per NEC.

    Condensation will collect and flow down----> standing water inside conduit is typical.
  21. Thread: 690.11

    by Zee
    Replies
    7$$
    Views
    795

    I've stuck to the TL line of residential...

    I've stuck to the TL line of residential inverters from SMA. AFCI is included in the disconnects if specified.
    Or micros as mentioned.
  22. Replies
    19$$
    Views
    847

    single jbox for all 13 branch circuits...or...

    single jbox for all 13 branch circuits...or individual j boxes at each branch circuit?
    I s the jbox under or adjacent to panels? Or apart?

    Isn' t that what the trunk cable is needed for?
    ...
  23. Replies
    4$$
    Views
    229

    The biggest i know of. How many kw of PV modules?

    The biggest i know of. How many kw of PV modules?
  24. Use THWN-2. 90 degrees rated in wet conditions. ...

    Use THWN-2. 90 degrees rated in wet conditions.
    THHN = 90 degrees rated in dry conditions.
    THWN = 75 degrees rated if wet.
    I believe.
    Most wire is rated both THHN and THWN-2, but not all.
  25. Thread: Sub Panel Feed

    by Zee
    Replies
    5$$
    Views
    331

    No. You cannot exceed 40 A PV. (of course, the...

    No. You cannot exceed 40 A PV.
    (of course, the usual option of downsizing the 200A main breaker to 175A would allow an extra 25A PV to play with====>65A PV total - instead of 40A.)
Results 1 to 25 of 200
Page 1 of 8 1 2 3 4