Re: [RE-wrenches] SMA String inverters

2024-01-10 Thread Dave Angelini Offgrid Solar via RE-wrenches 

Hi August,

I was told Tesla has LFP battery now.  True?  Thanks !

Dave Angelini Offgrid Solar
"we go where powerlines don't"
   [3]https://offgridsolar1.com/ [4]  [3]
e-mail  offgridso...@sti.net
text 209 813 0060

On 2024-01-10 3:25 pm, August Goers via RE-wrenches wrote:


We're starting to install the Tesla Solar Inverter with good results:

https://www.tesla.com/support/energy/solar-inverter/tesla-solar-inverter

It is going to be a tough product for others to compete with - the 
price point is low and features are high. 4 x MPPTs with low tracking 
voltage (60 VDC), built in consumption monitoring, one SKU to handle 
7.6 kW, 5.7 kW, 5 kW, 3.8 kW AC rating via software programming, built 
in ethernet/WiFi/cellular and the rapid shutdown can meet the NEC 
hazard control system requirements meaning that only one Mid-Circuit 
Interrupter (MCI) is needed for every three modules. All in all, a 
solid offering with lots of design flexibility. Time will tell how 
reliable they are.


Best, August

On Wed, Jan 10, 2024 at 10:04 AM William Miller via RE-wrenches 
 wrote:



Jeremy:

We generally avoided using the 41 series inverter for reasons 
specified here [1].  If you find a new string inverter in the SMA 
lineup, you might want to check to see if they have resolved some of 
the shortcomings.


I have not had reason to use string inverters because, other than 
Solar Edge, they do not offer intrinsic rapid shutdown.  Careful 
reading of the NEC indicates that even ground mount arrays require RSS 
unless the PV feeders run to a building with the sole use being to 
house solar equipment.  Having said that, I would imagine that if an 
inverter were mounted on the ground-mount rack, the requirement for 
RSS could be avoided.


William Miller

Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com [2]

CA Lic. 773985

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] 
On Behalf Of Jeremy Rodriguez via RE-wrenches

Sent: Monday, January 8, 2024 1:44 PM
To: re-wrenches@lists.re-wrenches.org
Cc: Jeremy Rodriguez
Subject: [RE-wrenches] SMA String inverters

What are you wrenches that used to install the SB-41 units 
sourcing now? Looks like there is a new model on their website


Jeremy Rodriguez

Solar Installation / Design

All Solar, Inc.

1453 M St.

Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand.

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Links:
--
[1] 
https://millersolar.com/MillerSolar/case_studies/SMA_40_Series/Whats_wrong_with_40_Series.html

[2] http://www.millersolar.com
[3] http://members.sti.net/offgridsolar/
[4] https://offgridsolar1.com/___
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Re: [RE-wrenches] SMA String inverters

2024-01-10 Thread August Goers via RE-wrenches 
We're starting to install the Tesla Solar Inverter with good results:

https://www.tesla.com/support/energy/solar-inverter/tesla-solar-inverter

It is going to be a tough product for others to compete with - the price
point is low and features are high. 4 x MPPTs with low tracking voltage (60
VDC), built in consumption monitoring, one SKU to handle 7.6 kW, 5.7 kW, 5
kW, 3.8 kW AC rating via software programming, built in
ethernet/WiFi/cellular and the rapid shutdown can meet the NEC hazard
control system requirements meaning that only one Mid-Circuit
Interrupter (MCI) is needed for every three modules. All in all, a solid
offering with lots of design flexibility. Time will tell how reliable they
are.

Best, August




On Wed, Jan 10, 2024 at 10:04 AM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Jeremy:
>
>
>
> We generally avoided using the 41 series inverter for reasons specified
> here
> .
> If you find a new string inverter in the SMA lineup, you might want to
> check to see if they have resolved some of the shortcomings.
>
>
>
> I have not had reason to use string inverters because, other than Solar
> Edge, they do not offer intrinsic rapid shutdown.  Careful reading of the
> NEC indicates that even ground mount arrays require RSS unless the PV
> feeders run to a building with the sole use being to house solar
> equipment.  Having said that, I would imagine that if an inverter were
> mounted on the ground-mount rack, the requirement for RSS could be avoided.
>
>
>
> William Miller
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> -Original Message-
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
> Behalf Of Jeremy Rodriguez via RE-wrenches
> Sent: Monday, January 8, 2024 1:44 PM
> To: re-wrenches@lists.re-wrenches.org
> Cc: Jeremy Rodriguez
> Subject: [RE-wrenches] SMA String inverters
>
>
>
> What are you wrenches that used to install the SB-41 units sourcing
> now? Looks like there is a new model on their website
>
>
>
>
>
> Jeremy Rodriguez
>
> Solar Installation / Design
>
> All Solar, Inc.
>
> 1453 M St.
>
> Penrose Colorado 81240
>
>
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand.
>
> ___
>
> List sponsored by Redwood Alliance
>
>
>
> Pay optional member dues here: http://re-wrenches.org
>
>
>
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>
>
>
> Change listserver email address & settings:
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>
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> other:
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>
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>
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Re: [RE-wrenches] SMA String inverters

2024-01-10 Thread William Miller via RE-wrenches 
Jeremy:



We generally avoided using the 41 series inverter for reasons specified here
.
If you find a new string inverter in the SMA lineup, you might want to
check to see if they have resolved some of the shortcomings.



I have not had reason to use string inverters because, other than Solar
Edge, they do not offer intrinsic rapid shutdown.  Careful reading of the
NEC indicates that even ground mount arrays require RSS unless the PV
feeders run to a building with the sole use being to house solar
equipment.  Having said that, I would imagine that if an inverter were
mounted on the ground-mount rack, the requirement for RSS could be avoided.



William Miller



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985





-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Jeremy Rodriguez via RE-wrenches
Sent: Monday, January 8, 2024 1:44 PM
To: re-wrenches@lists.re-wrenches.org
Cc: Jeremy Rodriguez
Subject: [RE-wrenches] SMA String inverters



What are you wrenches that used to install the SB-41 units sourcing
now? Looks like there is a new model on their website





Jeremy Rodriguez

Solar Installation / Design

All Solar, Inc.

1453 M St.

Penrose Colorado 81240



Sent by Jeremy's iPhone. Sorry for typos and shorthand.

___

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[RE-wrenches] Solarworld Warranty Claims Through Sunpower

2024-01-10 Thread Sam Haraldson via RE-wrenches 
Wrenches,

A colleague is inquiring about how to proceed with Solarworld warranty
claims after its 2018 acquisition of the Solarworld brand.  If anyone can
provide successes or failures along those lines I would appreciate being
able to share that info with my colleague.  If I am able to determine more
detail elsewhere and anyone on this list would like to have that info
shared with them please let me know off-list.

Sincerely,
Sam

[image: OnSite Energy]


SAM HARALDSON
Field Operations Director
(406) 551-6135
1515 N. Rouse Ave Bozeman, MT 59715
Locally owned and operated since 2012
[image: B Corporation]

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