Hi Ray,
I get the issues with AC coupling. However, this system already has a 3+
kW DC coupled array, the new array is close to 200' away, and it would take
2 more charge controllers of any of high voltage ones for this size array.
Are there any battery based inverters that folks have had decent l
Yeah, it's my understanding that the BMS systems on each parallel battery
deals with/prevents any imbalance.
As for 48V, I have been working with some that are 51V nominal and I know
there are some 60V solutions out there, so it's not so cut and dry to use
amp-hours. That's why I like talk in kWh
In Florida the utility must offer a single point of service for a property
or contiguous properties owned by a single entity, even if broken by a road
or other easement. If the properties are not contiguous, the utility can
require separate meters, but you'd have a hard time maintaining electrical
I've AC coupled off grid with the Sunny Island, but I haven't tried it
with Solar Edge. Can you adjust the Solar Edge coupling window to
outside the IEEE set points? We used to have set all GT inverters in
Hawaii wider, because the utility wanted them to stay on longer in a
brown out.
Ray W
Aloha,
I’m thinking about combining the Enphase IQ 7 micros with a Tesla Powerwall
or two.
Anyone out there try this? With bueno or not so bueno results?
Mahalo,
marco
___
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches
Good to know.
1. I just installed the latest SetApp inverters (the ones without
displays) for a ground-mounted array with the inverter in the dwelling.
2. The ground-mounted system had to comply with CEC 2016/NEC 2014 690.12
in California because the system was "in the building." Would the inve
I think the answer is in 250.28(D)(2). A bonding jumper is required in each
service disconnect (including the solar disconnect) bonding neutral to
ground.
Then you have to look to 250.64(D) for how to run your GEC. There are
multiple ways to comply.
Consider 250.64(D)(3):
Think of a wiring enclos
Hi Marco - We have dozens of systems with this combo, so far no problem.
Tesla's AC coupling mechanism in general seems to be very robust - we've
paired them with many inverter types and brands, and they always seem to
couple up during our grid-off tests. Since the vast majority of our systems
are
The transformer balances the legs, each leg being fed by a separate
inverter. We're not in disagreement.
The stacking mode I described is if he didn't use the T former. I prefer
the non T former set up, as I've seen several cases were the master
inverter was over worked, and had to be rebuil
If you are talking about two 120VAC legs, then the split phase voltage is 240V,
not 230V which is what you would see as a standard in Europe not here.
From: RE-wrenches On Behalf Of
David Palumbo
Sent: Thursday, July 25, 2019 12:48 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] 230Vac load o
Marco
Yes, we have, has a single tesla all for HECo, probably you have the same
thought for your customer, we can talk more off line if interested.
Jerry
On Thu, Jul 25, 2019, 7:58 AM Marco Mangelsdorf wrote:
> Aloha,
>
> I’m thinking about combining the Enphase IQ 7 micros with a Tesla
> Powerw
Sounds encouraging, August. Mahalo.
Are any of those systems zero export by any chance?
marco
On Thursday, July 25, 2019, August Goers wrote:
> Hi Marco - We have dozens of systems with this combo, so far no problem.
> Tesla's AC coupling mechanism in general seems to be very robust - we've
>
The heat pump is a made for USA product that operates on 1ph 60Hz and with an
acceptable voltage range of 210 to 253Vac. I don’t know why they list it as
230Vac, could have listed it as 240Vac. Same thing as loads that are either
listed as 115Vac or 120Vac, not much real world difference. With t
Many appliances, motors, AC units, etc are rated for 230 volts, but really
they work for our modern 240 volt services. If you do a quick web search,
it appears that US standard voltages over the years have morphed from 110
to 115, to 120 volt:
https://forums.tesla.com/forum/forums/difference-betwe
No, we haven't done any zero export. I guess both the Powerwall and Enphase
systems would need to be independently programmed for zero export? I should
add a caveat - all of our IQ7 systems have been the SunPower branded
Equinox type, not Enphase. The main difference being that Enphase would use
th
Hey There Wrenches,
So be advised that after a little research the SW dual stack will NOT
double the surge ratings of a single SW.
But that brings me to my second question:
What inverter surge rating should one refer to when looking at maximum
Inrush or LRA - 1ms? 100ms? 1 sec?
Yourengine
I only look at the 5 sec and 30 sec surge ratings to get an idea what an
inverter can really do in the real world. All those millisecond
ratings/ in rush current specs won't get a pump or motor started, and
will basically just get you into trouble. The reason they have those
ratings in amps a
Wrenches
Some time back, (years) l did a off grid system for a customer that was
building his home, he was milli g lumber from the home site, l quoted a
Outback PS-4 3648, the customer already had a very large battery bank 2000
amp hrs. at 48 DC nominal. Anyway he had a well on a 5 hp. freq drive a
18 matches
Mail list logo
