One goal of this experiment is to see if it's possible to use RG-8U type coax as a PV power transmission line.
The reason for using coax, is mostly the cost. RG-8U is a low cost cable.
It used to be widely available on the surplus market.
And, I have a couple hundred feet that's in pretty good shape.
The center pins of N connectors are normally coated with gold, which
is a very good conductor of electrons.
It can easily handle large mounts of RF power and I have used it to carry
DC power (for short distances) over 1KV at 0.5 to 1.0 Amp.
Another reason for using coax is safety. Since the outer shield of the coax
is ground (common) or negative in my case, it's prefect for grounding.
(I have an 8 foot ground copper clad ground rod to be installed).
The large N-connector (upper right) is the PV power output port.
N-connectors have internal rubber gaskets and are very resistant to water.
The 'N' female and the ground lug(sliver plated) are mounted tightly on a copper plate.
Upper left is the PV off-on switch. Lower left is a female BNC connector
for test measurements.
Note: The BNC test port wires have reversed colors.
The 10A fuse is located top center.
The Blue negative - PV wire comes in from the bottom and goes into the
center hole of the 3 hole terminal (right side). The Black wire (right hole)
connects back to the coax cable ground-shield (outer copper braid).
The small red '-' wire is the ground back to the BNC test port.
The '+' three-hole terminal (bottom center), center hole comes from the Positive '+' PV line.
The large red wire in the right side hole connects to the fuse,
then is switched into the center pin of the coax cable..
The small '+' black wire on the left, goes back to the center pin of the BNC connector.
Both of the 3-hole terminal blocks will be re-tightened and taped up before
the waterproof cover is installed.
All 6 of the holes will have to be water-proofed before long term testing.