>From my experience with reflective roofs galvanized quickly ages becoming
less reflective! White is best aluminum paint next.
Ken Schaal
CommonWealth Solar
On Thu, Nov 19, 2020, 9:17 AM frenergy wrote:
> This is a very timely discussion for us also as we have many
> Midnight MNPV6 d
This is a very timely discussion for us also as we have
many Midnight MNPV6 discos in the sun. Though we're careful about
tightening wire landings, using contact cleaner for the fuses and fuse
holders, some installs seem to get hotter than others. We just started
making a very sim
That's what I am thinking. And the IQ7+ max current is actually about 2%
higher than rated and we have a 1.3x DC to AC ratio so I would not be
surprised if all microinverters are completely maxed out for brief periods
at peak sun.
I'm working on getting pictures from one of my tech's phones. I thi
Jason,
Bright sunny days, disconnect on the west side of house, maybe in the sun?
43.56A * 1.25 for continuous duty = 54.45A. If these disconnects are also
baking in the sun, maybe the extra ambient heat is enough to push it over
the edge? Just a thought.
Cheers,
Dave
*Dave Tedeyan, PE*
Senior Eng
Hi Jason
Any chance for some photos?
Jay
> On Nov 18, 2020, at 12:18 PM, Jason Szumlanski
> wrote:
>
>
> The plot thickens on the fuse blowing issue. Again, we tore the Enphase IQ
> system apart looking for any reason for the fuse to keep blowing. We
> reconfirmed torque on all line side
The plot thickens on the fuse blowing issue. Again, we tore the Enphase IQ
system apart looking for any reason for the fuse to keep blowing. We
reconfirmed torque on all line side conductors to the service (supply side
interconnection using Polaris taps).
Low and behold, I get a second client with
The tripping breaker occurred at random times, even at night. No
weather-related correlation.
I have more research to do to see when this fuse issue is happening, but
previous visits showed no water ingress. I'm not sure about temperature.
On Thu, Aug 27, 2020 at 8:51 PM Jay wrote:
> Hi Jaso
Wrenches
On the latest enphase issue withe fuses, swap leads L1 to L2 and to L1 and
wait if its the same fuse or same leg.
Jerry
On Thu, Aug 27, 2020, 4:29 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> So the resolution to this is in... But I still have no idea what was
> wron
Hi Jason
One thought I have about the blowing fuse is to check it with a IR tool.
I suspect a poor connection of the fuse to holder which during higher air temp
is causing it to fail.
I’m assuming that the correct amp size and slow blow fuse Is installed and that
the wire connections are don
So the resolution to this is in... But I still have no idea what was wrong.
The string of 10 offending microinverters was split into 5 and 5. We had a
spare breaker in the IQ Combiner so it was relatively easy to run another
branch circuit. It has been over two months with no recurrence. So the
is
Yes, we double-checked that. I have seen that happen before and it's one of
my early diagnostic steps for something like this.
On Tue, Jun 9, 2020 at 9:18 AM Mac Lewis wrote:
> Hi Jason,
>
> Are you certain that the branch circuits aren't crisscrossed somewhere,
> meaning that an L1 branch 1,
Hi Jason,
Are you certain that the branch circuits aren't crisscrossed somewhere,
meaning that an L1 branch 1, isn't connected to an L2 branch 2? That could
explain two different breakers tripping.
Good luck
On Wed, Jun 3, 2020 at 1:07 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> w
Undoubtedly, the termination caps are the second thing we check after the
rooftop junction box(es). These are prone to installation errors, even when
the right parts are used. And given the cost, I've thought very long and
hard about abandoning them altogether and terminating strings in small
j-box
In my experiance if the combiner is in the sun breakers will be hot
breakers are a thermal device and should be kept at room temperature. Try
substituting the HCAC type breaker for the stanard breaker
On Thu, May 21, 2020, 8:57 AM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> I'
I was just at a site last week where the Enphase branch circuit breaker,
outside utility disconnect breaker, and feed breaker in the main panel all
tripped simultaneously, and it happened about 1 hour before I showed up onsite.
The customer said it had happened 1 other time last fall but that t
The breaker in the main panel IS tripping simultaneously with one of the
branch circuit breakers each time.
On Wed, Jun 3, 2020 at 12:43 PM Jay wrote:
> A question that keeps nagging me is why do these breakers trip and not the
> breaker in the main panel?
> Presuming there is a 40 amp in t
A question that keeps nagging me is why do these breakers trip and not the
breaker in the main panel?
Presuming there is a 40 amp in the main
I would have thought that given all the times the breakers have tripped at some
point that one would have tripped and I can’t understand why not?
Jay
Wrenches
Looking g at the bigger breaker tripping at the same time is very likely do
to response time of the breaker nothing more. As l suggested in a previous
message. Use a non bridged breaker to see if it is one or both legs that
trip. Also an eguage will help to see what if anything leads up to
I wonder about that. Of course, it could be the "inverter output circuit"
having a fault in the wiring still (an intermittent issue somewhere within
the IQ cable or home run wiring). But internal to the microinverter, is it
possible that a fault could still occur at night? I had a suggestion from
a
If it trips at night, we know it is not the output from the inverters
causing the tripping. The current must be coming from the grid.
---
On 2020-06-01 12:05, Jason Szumlanski wrote:
It's not weather. It's at all times of the day and night, and I confirmed that there is no correlation to rain
You can tighten up the graph to minutes, even seconds if you set it up to
do so
Jerry
On Mon, Jun 1, 2020, 10:01 AM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> I didn't think an eGauge would provide that granular of detail if there is
> a very brief intermittent issue. If I'm w
I didn't think an eGauge would provide that granular of detail if there is
a very brief intermittent issue. If I'm wrong about that it might be worth
a try.
What I really want to do is install a separate breaker in the main panel
for the Envoy so it doesn't lose power when the IQ Combiner main bre
Jason, Wrenches
Can you install a data logger, say an eguage so you can see spikes or a
frequency shift, surge, most anything.
Install two non connected breakers to isolate the line, just for testing
purposes and see if it's only one that pops.
Jerry
On Mon, Jun 1, 2020, 9:11 AM Jason Szumlanski
I considered that, but it's tripping at night, so it's not a power output
issue. It does have #6 wire, so this could be done, but I don't think it's
related. It's a genuine CH240 breaker. We even replaced it once before.
At this point, I must have a fault or faults on the roof. Maybe a rodent
chew
The problem is the intermittent nature of the problem. It can take 2-weeks
or more to trip again. The owner is not going to want to leave a string off
for an indefinite period of time.
On Mon, Jun 1, 2020 at 11:00 AM Dave Angelini Offgrid Solar <
offgridso...@sti.net> wrote:
> Run the system wi
That was the second thing I checked after the j-box. They all appear to be
good. I replaced a questionable one, but the tripping continued. I have
seen end cap issues before, especially if the hang down and get wet.
There are no excess connectors with sealing caps, so it's not that, either.
On
It's not weather. It's at all times of the day and night, and I confirmed
that there is no correlation to rain or high winds. That was my first
suspicion.
On Mon, Jun 1, 2020 at 10:27 AM Ray wrote:
> Is it at all weather related? Rain, or high humidity? High
> temperatures? Do you have any
Jason
Can you check for heat? How close is the branch breaker to the main breaker?
Maybe the bus bar is loose or the breaker is loose or wire is loose somewhere
causing heat to trip the breaker.
Thank you,
Maverick
> On Jun 1, 2020, at 9:24 AM, Jason Szumlanski
> wrote:
>
>
> Well, tha
Hi Jason,
My curiosity is about both breakers tripping.
I would suggest using a larger output breaker, I believe its a 40, put in a 50
as a test. I would assume the wire size will still be protected by the 50.
And I would also ask if the breakers are actual CH or clones?
jay
peltz power
Run the system without the branch that tripped. Sorry if I missed that
you have done this. I appreciate you reminding me why I keep all of the
electronics inside. I get tempted
Dave Angelini Offgrid Solar
"we go
where powerlines don't"
http://members.sti.net/offgridsolar/ [1]
e-mail
offgridso.
Behalf
Of Jason Szumlanski
Sent: Monday, June 1, 2020 7:24 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Enphase intermittent breaker trippjng
Well, that didn't resolve it. The main breaker and a branch circuit breaker
tripped again a few days ago. It was the same branch this time.
Hi Jason - I know I've mentioned this before, but were you able to verify
that the branch trunk cable end caps are properly installed? We've had a
few cases of intermittent breaker tripping where the end caps were not
installed, had fallen off, or not properly installed. A little moisture
leads to
Is it at all weather related? Rain, or high humidity? High
temperatures? Do you have any indication what time of day it trips off at?
Ray Walters
Remote Solar
303 505-8760
On 6/1/20 10:23 AM, Jason Szumlanski wrote:
Well, that didn't resolve it. The main breaker and a branch circuit
breaker
Well, that didn't resolve it. The main breaker and a branch circuit breaker
tripped again a few days ago. It was the same branch this time.
As my next diagnostic step I swapped two circuits (on which breaker they
are landed). If history is a guide, it will work for about two weeks and
then trip ag
I strongly suspect the CH240 combined breaker was compromised (we will
see). Since it happened that two different strings tripped, I doubt I have
two microinverters with internal faults. It has to be the combined breaker.
I was just surprised that branch circuit breakers were tripping
simultaneousl
Trial and error only unfortunately.
Chad Waits
President-Net Zero Solar
Cell: (520) 270-4873
On Thu, May 21, 2020 at 8:14 AM Jay wrote:
> Hi Chad
>
> Was the enphase monitoring able to locate the bad inverter? Or trial and
> error?
>
> Jay
>
> Peltz power.
>
> On May 21, 2020, at 7:19 AM, Cha
Actually, we had a IQ7 string loaded up to its max panel size and max string
length and in the spring on cool, clear day, it tripped the string’s associated
breaker in the Enphase combiner.
We reset but of course that breaker was impaired and it tripped again. We
replaced and never had an is
Hi Chad
Was the enphase monitoring able to locate the bad inverter? Or trial and error?
Jay
Peltz power.
> On May 21, 2020, at 7:19 AM, Chad Waits wrote:
>
>
> Yeah. We've had them trip in the evening as well. Just never come back online
> when the sun comes up. We've replaced breakers a
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