becomes too high. I
recall we fixed this by using a 2400VA acme isolation transformer. Can’t
really remember the engineering explanation, but you may want to explore this
avenue.
Mike Kocsmiersky
Principal
Spirit Solar Inc.
From: drake.chamber...@redwoodalliance.org
I recommend the hydraulically pressed ballast block over the non hydraulically
pressed kind.
From: cwarfel [mailto:cwar...@entech-engineering.com]
Sent: Monday, July 2, 2018 1:08 PM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] crumbling ballast blocks
I am not trying t
/series-resistance
Mike Kocsmiersky
Principal
Spirit Solar Inc.
(413) 734-1456
From: Corey Shalanski [mailto:co...@joule-energy.com]
Sent: Thursday, May 17, 2018 6:19 PM
To: RE-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] PV Cell Temperature Variation
On a recent utility
on the metals.
I've always used for metal roof applications.
Mike Kocsmiersky
Principal
Spirit Solar Inc.
(413) 734-1456
-Original Message-
From: Dave Angelini Offgrid Solar [mailto:offgridso...@sti.net]
Sent: Wednesday, April 18, 2018 12:59 PM
To: RE-wrenches
Subject: Re
unit. Water tanks are typically
under insulated and can lose 2kWh/day in standby losses.
Mike Kocsmiersky
Principal
Spirit Solar Inc.
(413) 734-1456
From: Barton Churchill [mailto:bar...@solarips.com]
Sent: Wednesday, March 14, 2018 7:31 PM
To: RE-wrenches
Subject: Re: [RE
Morningstar controllers
would give me, but could add the Wind Turbine Generator as well, but perhaps
there is a better way.
Thanks for your thoughts.
Mike Kocsmiersky
Spirit Solar
413 734-1456 (cell)
___
List sponsored by Redwood Alliance
In the past I determined that anything above a 4 pitch on standing seam roofs
would require rails. Just too difficult otherwise. I would recommend the use
of rails all the time however on larger systems, there can be significant added
cost. Because the seams don't align as a perfect multiple
Most often I used 1" thick isocyanurate pre-adhered to the PVC wrap. I chose
this method for the high R-value, about R7 per inch. A bit pricier than closed
cell foam rubber insulation, but much better R-value, R7 vs R3ish. At first I
would use a PVC sealant, extremely high in VOCs, to seal th
jacketed insulation (costly) or
UV protection on some of the newer linesets. Painting the PVC with spray paint
to change the color I have had good success with.
Mike Kocsmiersky
PV Inspections
(413) 734-1456
-Original Message-
From: solar1onl...@charter.net [mailto:solar1onl
You may also want to cite the 2017 code which does not require the GEC for
ungrounded inverters, or rather non transformer isolated inverters.
From: Jason Szumlanski [mailto:ja...@floridasolardesigngroup.com]
Sent: Monday, January 30, 2017 2:55 PM
To: RE-wrenches
Subject: Re: [RE-wrenches]
inverter?
This assumes that the micro inverter performs better when more fully loaded.
Additionally over time the crystalline silicon module will degrade slightly
as well, reducing the amount of power clipping.
I welcome your thoughts.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
it gets stuck on curve of the one string that has a bad diode.
Also, it could be more of an issue with the MPPT controller thinking the
array is a 24V Array, or some other controller failure. I would look there.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Spirit Solar
through, which the inverter should be able to handle.
Overall I think you are best to design residential systems with a ratio of 1.12
+/- .02 to 1 of DC array size to inverter AC rating. For commercial systems go
a bit higher 1.2:1 to 1.25:1.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Air compressors have a high surge current and the SW5548 doesn't handle
surges that well. I'm surprised you even got the compressor to run. Adding
more capacitance for the startup might help.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Spirit Solar
www.SpiritSolar.net
---
e of propane for the
genset. (I'm assuming this is LPG).
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Spirit Solar
www.SpiritSolar.net
-Original Message-
From: Chris Daum [mailto:ch...@oasismontana.com]
Sent: Thursday, April 21, 2016 3:41 PM
To: 'RE-wrenches'
Subj
I've had good luck with both the SureSine from Morningstar and Exeltech for
inverters. Couldn't tell you the noise output.
Also, you may want to try Solar Converters Inc, or Samlex for DC to DC
converters.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Sp
the array. I would imagine that the poles /
towers would be a bigger issue for shading and that the high voltage
transmission wires would be negligible at 60' or more from the array. A
close approximation of shade band could probably be made via geometry.
Mike Kocsmiersky
Principal
Phon
I believe that when you have a TL inverter that has two channels you may have
up to two strings, unfused, going into each channel. Thus leaving you with
four strings of modules with no fusing.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Spirit Solar
www.SpiritSolar.net
From
properly when
connected. But it is impossible to tell from the information given. Jay’s
advice to test with each string individually would be the way to go.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Spirit Solar
www.SpiritSolar.net
From: jay [mailto:jay.pe...@gmail.com]
Sent
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