We use this 3M wire numbering dispenser. They don't stick as well as
I'd like, but it can solve some very weird problems later.
3M STD Wire Marker Dispenser with #0-9 H-5223 - Uline
I'm also a fiend for color coding, and have had numerous discussion here
on the list about the need to color
What made this installation (again, by others) a bit more complicated was
that all branch circuit line conductors were black. I make it a point on my
installations to require black for L1 and red for L2 up to #6 wire size.
It's not a failsafe by any means but does reduce risk.
On Thu, Jan 23,
Jason -
Thanks for sharing - this is a good lesson for all Wrenches. Years ago we
had a dual string inverter installation where the DC positives and
negatives were mixed between the two interters. String 1 positive went to
inverter 1, string 1 negative went to inverter 2 and vice versa. The
Thanks for sharing, Jason. That's an excellent cautionary tale...
On Wed, Jan 22, 2020 at 2:58 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> I discovered the issue I believe, so I thought I'd update all of you who
> gave me ideas on what to look for (thank you).
>
> And this
I discovered the issue I believe, so I thought I'd update all of you who
gave me ideas on what to look for (thank you).
And this is something that I stress the importance of all the time...
The branch circuit pairs were not properly paired up! All of the L1
conductors went to L1 on the bus and
Almost every meltdown I've looked at was not due to lightning, but heat
from a high resistance connection. A lug not torqued can cause
surrounding plastic to melt. If the wrong breakers are used with the
buss bar, they might snap on and work, but not be able to take the
current over time.
Wrenches
Cant tell anymore but l had a buss failure due to water getting on buss and
pealing the tin off the buss and the aluminum base will light up real quick.
Jerry
On Tue, Jan 21, 2020, 9:10 AM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> (System installed by another
I just remembered this... There was a tripping breaker here almost
immediately after installation. We investigated the string and found no
issues, including checking the termination cap (on all strings). We reset
the breaker a few times and it would run for days without issue, then trip.
Then we
Yes - It's only 56A total inverter output rating on a 125A bus. Max string
is 13A inverter output rating on 20A OCPD.
On Tue, Jan 21, 2020 at 12:58 PM Chris Sparadeo
wrote:
> Jason,
>
> Have you calculated your back-fed amapacity allowance to confirm it
> complies with the 120% busbar rule
Jason,
Have you calculated your back-fed amapacity allowance to confirm it
complies with the 120% busbar rule as per 705.12?
Best,
Chris
On Tue, Jan 21, 2020 at 12:40 PM August Goers wrote:
> Hi Jason -
>
> It certainly appears that there was some sort of surge or short. We've had
> a few
Hi Jason,
I have had an experience servicing other's arrays where they used PVC on
the roof. The LB cover does not hold up over time and then water and snow
were getting into the conduit, which came straight down into the top of
that same kind of Eaton panel. Corrosion caused at least one breaker
Hi Jason -
It certainly appears that there was some sort of surge or short. We've had
a few cases where microinverter branch circuit end termination caps were
left off or fell off and shorted out during rain storms. You might want to
double check that those are all in place. We've also had cases
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