Type: Posts; User: Zee
what they said.
Curious tho...how many panels, on what size inverter?
Given that up to 25 @ P300 optimizers (and hence panels) can be strung together in one string,....why not combine into just...
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...
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...
i meant DC side, sorry. So:
EMT terminating in a steel connector into aluminum enclosure (i drilled KO)...will I need a gr bushing?
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...
OK, what are they?
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...
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...
Can that phantom voltage hurt you?
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...
excellent point. an additional reason ungr. pv is safer.
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...
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. ...
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.
Thanks for the link to check certificate authenticity. Yup, it checks out as legit.
They just sent me a certificate claiming UL 1703! Problem solved i guess.
The Husky, double ended, 1/4" hex drive, fine ratchet every 7 degrees?:thumbsup:
I call it the Magic Tool.
aahhh.... the little grounding bushing. The bane of my working existence.:rant::rant:
DC side: You need those when 2 things are both simultaneously true: on eccentric or concentric KO's...
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)
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?
i want to expand a customer's 2.96 kw,...
Well said, Smart$ and J ben. Thanks.
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...
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...
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...