When connecting the MPPT-40 to your battery
and your solar bank, the solar panel is connected
positive and negative on the left hand side
of the display.
For testing purposes of this video, I haven't
used the correctly sized cable.
Normally you would use a 10 gauge cable that
would come down from the roof and we connect
to this position here.
And from the battery terminals, you would
use probably a 4 gauge cable that would come
directly from these two connectors, directly
to the battery.
There's two positive and two negative connectors
on the controller.
It doesn't matter which one you use for a
single installation, they can pulled from
one positive or one negative.
The other two connectors are used if you want
to double up on your wiring or if you have
two controllers in parallel and you can hook
them in parallel together via these terminal
connections.
