okay Michael Brown Solar-ray again and here we are we're gonna go over a couple points
on the whole debate on string inverters and micro inverters because it almost
seems like the overwhelming majority of people out there have this claim and
belief that on a string inverter if you shade part of a module or you shade a
whole module the whole module goes down or the whole string goes down and a lot
of the sales reps that my guys are reporting you know our customers are
telling my sales reps that other sales reps are saying and other companies are
saying is that there's this Christmas tree effect that if you shaved part of a
module the whole string goes down the whole module goes down and I think it's
about time that we start to bust that myth but before we go into that video we
need to go over a couple of points which is the first being the basic math of
electricity okay so when you wire an electrical circuit in series like
batteries or solar cells or power generating circuits wiring them in
Surrey series which is positive and negative positive and negative positive
negative accumulates voltage okay so you're adding the sum of every
additional voltage in the battery or the solar module that is being added to that
positive in the negative positive negative so if you had 30 and 30 you'd
end up with 60 so 30 going from positive to negative if you measure those two
circuits and it was 60 now the current or amperage would remain the same in a
series string so your amperage would remain constant assuming that all the
amperages on all your batteries or solar modules was also a constant or
relatively similar so after explaining that and then if you
wanted to if you were trying to increase your
amperage you would bring them in parallel which would be positive to
positive or negative to negative and that would accumulate add amperage so if
you had seven amps and seven amps and you put them positive positive negative
negative you would now have 14 amps okay so it's it's it's a very simple very
easy math so and you're gonna need to understand a little bit of that before
you watch the video otherwise you might get lost and you might already know this
okay so so knowing that now because of the video we're gonna have solar modules
outside in the Sun and we're gonna have four modules we're in a solar-powered
room honestly and so every once in a while the the air-conditioner will come
on and or the fans on the inverter will come on please excuse that so the other
thing to consider before watching the video is exactly how solar sunlight
generates electricity with a solar module and a solar module has silicon
cells those those little squares or rectangles and sometimes octagon
sometimes multi-sided but they're wafers of crystallized silicon and that's a
photoelectric element silicon which means that when sunlight hits it when
photons hit it then photons will excite the electrons within that element and
the thinner you make it the more capable it is for you to capitalize on the
movement of those electrons and that's why the solar cells are very thin and
and that's why when you look at a solar module you'll see those little
conductors printed on all the solar cells and then coming up and so voltage
is directly affected by how Dirac perpendicular to the solar module and
the intensity of the actual Sun cloudless atmospheric moisture clouds
all these things come into effect as far as MultiJet concerned as far as your
current or amperage is concerned the biggest effect on amperage is
temperature so as the temperature goes down the amperage will go up and as the
temperature goes up the amperage will go down okay so that's some simple things
to look at as far as that's concerned so then we're gonna watch the video a
little bit attention to the beginning of the video and I'll tell you why
after the video
so as you can see by the testing that we just did okay
string solar modules wired in series definitely not heavily impacted by shade
in fact arguably less impacted by shade by module level electronics which has a
very small window of operation on the voltage which is directly matched to the
solar modules and the type of solar modules that they're designed to work
with and falling outside of that window means that that module level electronic
turns off okay so you've seen the video I just explained that and we can get
into cut sheets and we can go over that data in future videos respond to this
one with what you would like to see or if you're thinking that there's
something wrong with it tell us what you think is wrong with it and if it's valid
and we have some movement with other people we'll do another test and we're
open door here we're very open to doing what's right and - and - exposing the
actual reality as to what's going on out there so and if you're just a naysayer
and we're just trying to be negative prove it with your own video with your
own testing and be as transparent as us and be as open to having us come to your
facility to oversee and also perform our own direction on your testing as we
are open to that here some of the things you saw on the differences in voltage
and the differences in the output and stuff like that had to do with shape
coming over and clouds is a it's been very cloudy here in Florida and also we
demonstrated the difference in temperature behind the module going with
a temperature gun from the rail to the back of the module not even the front of
the module just the back of the module and I think we were at I'm not I'm not
looking at the videos but I think we were 40-plus degrees difference so it's
very significant and so then we kind of get into why we don't do the the module
level electronics and it's because their service heavy which you can have the
best warranty in the industry you can have great warranties including say
let's use refrigerators for an example okay so you go to the box store or you
have somebody sell you or refrigerate or somewhere else through some other means
but you go with the one with the greatest warranty and it's longer and
everything else like that and even though they might replace your
refrigerator even though they might come out and fix your refrigerator even
though they might replace it even though they might refund it do you really want
your refrigerator to fail okay so it's our experience that they fail vladimir
filmed me pulling a couple boxes out of failed microbrews there's a reason we
don't use them and it's not our theory as to what happens with them it's our
experience as to what happens with them and if if I had no problem sending
people out to do service and people calling our office all the time saying
there's something wrong with my system if we had no problem with that we didn't
mind that and our customers didn't mind that we'd be installing that
stuff all day long everyday and the truth is is that most of these other
companies have not been continually in business as long as we have do not have
the experience that we have do not have the training that we have do not have
the expertise in installation and training in the installers the actual
people on your roof which leads to the other point as to why the other guys do
install these pretty much anybody that can wire in an outlet or light switch or
a light fixture can install a module level electronic solar system and that's
just a fact and that's why most of the other companies do is because it's
easier to hire help that can do that kind of work takes a lot more expertise
a lot more training a lot more attention to detail and a lot more workmanship to
do string inverter systems properly okay so and that kind of comes down to even
if you were doing micro inverters you do want people to be on your roof and doing
stuff properly so I guess that kind of let's see if I missed anything else on
my paper oh so here we let's just finish off with this so we don't subcontract
anybody so I don't have to worry about whether or not whoever's going to do the
work knows what they're doing if they don't know what they're doing they don't
last here okay second off everybody that works here is on our payroll and under
our workman's comp and covered front to back if they're driving our trucks
they're on our insurance so it's that's not a problem and our people don't get
raises or do anything or move forward without getting training that's our
benchmark all right it's not just how long you been here you can't just sit
around and coast at solar ray you've got to be moving forward and you've got to
be improving otherwise you're stagnant as far as pay and but as far as your
solar installation the solar equipment the solar circuits the solar electric
unless it's something outside of our scope of work or the solar scope of work
which were experts at if it's something we're not an expert at that's the only
time we would hire anybody to come to your house to do anything except for an
actual employee at solar ray and so I guess that's it please comment and if
there are questions it not only helps us be fresh but it gives us ideas on how to
improve in the future so please comment and share and hopefully this helps
Michael Brown solar ray by a system from us all right