48V Off grid system for down payment on 6 Acres help

[h=2]About measuring current flow in both directions (e.g. bi-directional measurement)?[/h] The "Watt's Up" and Doc Wattson meters only measure current flowing in the black (negative) wire from their LOAD side to their SOURCE side as labeled on the meter's case. Current flowing in the opposite direction is not measured and does not affect accumulated or peak readings. Current flowing in the red wires is not measured at all.
To do a net current flow "bi-directional" current measurements (e.g. measure both directions of current flow) at one point in a circuit, we recommend using two meters connected together and oriented LOAD to LOAD (or SOURCE to SOURCE) as that is a more flexible and easily interpretted arrangement, than a bidirectional meter usually offers.
Alternatively, the meters can be mounted in separate parts of the system to measure two currents simulaneously. For example, the charge current into a battery and the discharge current out. Those currents may differ and this arrangement will show that. In this case meters are connected as usual ensuring that the current to be monitored is flowing in the correct direction in the black leads.
These dual meter arrangements allow independent measurement of the two current flows and their peak values. It also allows their respective accumulated values (e.g. Ah, Wh) to be reset separately. A bonus is that the voltages of the two separate systems can be independently monitored as well as the currents.
Note that with the dual systems, the red wires can also be connected using the "3-wire" arrangement. The red wires only need to carry enough current to power the meters and measure the voltage at the desired points.