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solar panel connections understanding
series and parallel when we connect
panels in series the vaults add up but
the amp styles same if we have two
panels each with voltage of 20 and
amperage of 5 when we connect in series
the Volt will be 40 and the amps stay 5
most modern panels come with mc4
connectors at the back here I'm
demonstrating on how to connect two
panels in series the positive of the one
goes into the negative of the other and
the remaining two wires will go to the
controller when connecting in parallel
volts stay the same but amps add up
using the same two panels the voltage is
now 20 and the amps 10 when connected in
parallel to connect panels in parallel
you will need a parallel connector kit
here I'm taking both positive and
connected into the parallel connector
I'll do the same for the negative
connection both negatives go into a
parallel connector
[Music]
from the parallel connectors one wire
will go to the controller
[Music]
we will look at the open circuit voltage
because most entry-level multimeters can
measure DC voltage the open circuit
voltage here is twenty one point seven I
will now do a outdoor test to show you
how volts add up to stay the same
depending on the connection put your
multimeter on voltage for DC power first
I'm connecting the panels in series we
expect to have a voltage of around forty
three forty four and as you can see yes
we've got a voltage of forty two point
nine next I connect these same two
panels in parallel and the voltage
should roughly be the same as a one
panel which is twenty one and here we
can see our panel connection is 21 volts
this was a very basic and quick video
just to show you in series volts add up
and AM stay the same and in parallel
volts they're the same and amps add up
