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  1. Replies
    18$$
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    320

    It's possible the OP meant that the AHJ does not...

    It's possible the OP meant that the AHJ does not allow line side TAPS (taps meaning here stripping or piercing insulation on service conductors for split-bolts etc, or some double lugging, if you are...
  2. Replies
    40$$
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    1,842

    Thanks Carultch, that is what I was looking for. ...

    Thanks Carultch, that is what I was looking for.

    Anybody disagree on the following statement?
    ON DC SIDE, over 250 VDC, no GEC, a steel connector on EMT conduit with lock-ring (only) into an...
  3. Replies
    40$$
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    1,842

    i meant DC side, sorry. So: EMT terminating in...

    i meant DC side, sorry. So:
    EMT terminating in a steel connector into aluminum enclosure (i drilled KO)...will I need a gr bushing?
  4. Replies
    40$$
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    1,842

    Hmmm that is interesting news to me. so a...

    Hmmm that is interesting news to me.
    so a locknut on a raintight steel EMT connector when entering an aluminum enclosure in a just right sized KO (not eccentric or concentric) is not to NEC? I need...
  5. Replies
    93$$
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    2,761

    OK, what are they?

    OK, what are they?
  6. Replies
    93$$
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    2,761

    Thanks! I would like to know numbers: Exactly...

    Thanks!
    I would like to know numbers: Exactly how many amps?
    Also you say "current is ....limited" then add "[t]hat is real current." Those statements seem contradictory.
    I don't know the answer...
  7. Replies
    93$$
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    2,761

    But why would pos+ or neg- have potential to gr.?...

    But why would pos+ or neg- have potential to gr.? I am genuinely curious, i am not sure.
    After all, in a typical 120/240 VAC system we only have potential to gr. because gr. is bonded to one hot leg...
  8. Replies
    93$$
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    2,761

    Can that phantom voltage hurt you?

    Can that phantom voltage hurt you?
  9. Replies
    93$$
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    2,761

    [QUOTE=jaggedben;1671090] I believe that when...

    [QUOTE=jaggedben;1671090]
    I believe that when the inverter is turned on there is a potential of both conductors to ground, but only because the AC neutral is grounded. And since the completion of...
  10. Replies
    93$$
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    2,761

    excellent point. an additional reason ungr. pv is...

    excellent point. an additional reason ungr. pv is safer.
  11. Replies
    93$$
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    2,761

    I do not understand the technical nature of your...

    I do not understand the technical nature of your reply. It seems you know more than i do, substantially, about various electrical systems.
    Also, is it possible that your technical reply doesn't...
  12. Replies
    93$$
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    2,761

    I don' t think this is true. In an ungrounded...

    I don' t think this is true.
    In an ungrounded system Negative and positive "float" .......they have no potential to ground. They are ungrounded.
    They have voltage, potential, only to each other. ...
  13. In regards to OP....way back when..... 42 pages...

    In regards to OP....way back when..... 42 pages ago:

    Is the real point of the TESLA battery bank to allow PV GRID TIE installs to continue beyond the utility determined net metering caps.

    In...
  14. Thread: UL vs UL1703

    by Zee
    Replies
    5$$
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    276

    Thanks for the link to check certificate...

    Thanks for the link to check certificate authenticity. Yup, it checks out as legit.
  15. Thread: UL vs UL1703

    by Zee
    Replies
    5$$
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    276

    They just sent me a certificate claiming UL 1703!...

    They just sent me a certificate claiming UL 1703! Problem solved i guess.
  16. Replies
    40$$
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    1,842

    The Husky, double ended, 1/4" hex drive, fine...

    The Husky, double ended, 1/4" hex drive, fine ratchet every 7 degrees?:thumbsup:

    I call it the Magic Tool.
  17. Replies
    40$$
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    1,842

    aahhh.... the little grounding bushing. The bane...

    aahhh.... the little grounding bushing. The bane of my working existence.:rant::rant:

    To SHAWN:
    DC side: You need those when 2 things are both simultaneously true: on eccentric or concentric KO's...
  18. Thread: 312.6 meter socket

    by Zee
    Replies
    6$$
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    570

    Why do you think we don't use meter/main combo...

    Why do you think we don't use meter/main combo panels? That is all i see here in the SF Bay Area in CA.
    (Old systems..... like 50 years ago..... had separate meters)
  19. Thread: UL vs UL1703

    by Zee
    Replies
    5$$
    Views
    276

    UL vs UL1703

    Dumb question here:
    What is the difference between a module being UL listed vs UL 1703?
    What does that mean for me as an installer in CA?


    (Background:
    i want to expand a customer's 2.96 kw,...
  20. Replies
    17$$
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    1,494

    Well said, Smart$ and J ben. Thanks.

    Well said, Smart$ and J ben. Thanks.
  21. Replies
    8$$
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    803

    I faced a corrugated metal roof only once....

    I faced a corrugated metal roof only once. Typical, true wavy, every couple inches.

    We pulled the existing gasketed screws where needed and in its place set the "top slider" of a pro solar tile...
  22. I imagine that vertical, dc, double 3" conduit...

    I imagine that vertical, dc, double 3" conduit could be furtehr reduced if you combined on roof.
    So....2x32 conductors= 64 wires/4 inverters = 16 per inverter = 8 strings each?
    WHy aren't you...
  23. hmmmm. If inverter vents top and bottom, and if...

    hmmmm.
    If inverter vents top and bottom, and if you have no/minimal side clearance on inverters.......and you transition to THHN on your DC Spaghetti wires above this room, thus significantly...
  24. Definitely transition to thhn from pv wire, once...

    Definitely transition to thhn from pv wire, once you leave PV array.
    3" EMT is insane. the fill factor on pv wire is triple that of thhn. same gauge. At least.
  25. Replies
    17$$
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    1,494

    OP, some AHJ's don't allow load side, period....

    OP,
    some AHJ's don't allow load side, period. Check.:eek:
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