AlaskanNoob
Solar Enthusiast
- Joined
- Feb 20, 2021
- Messages
- 906
Hello all,
I had previously been planning on installing PV at our cabin that we just built last summer as detailed in this thread. But thanks to the many great inputs from people we got in that discussion, we've changed our original vision a lot.
Now we are planning on using LG440N2T-E6 bifacial panels in two different strings of 6s2p, wired into a nearby Victron 450/200 SCC, connected to a nearby Victron Multiplus II, charging a nearby 48V battery bank with a nearby Honda EU7000 generator plugged in to backup charge the battery bank as required.
The Victron equipment and battery bank will be buried in a root cellar structure with a small cabin above it, to keep the batteries from getting too cold in the winter and to keep from having to use PV to heat them.
Worst case, the PVWatts calculator shows this ground mount in the new location should produce 12KW of power on the darkest day (not accounting for any gains from the panels being bifacial on a snowy day). That will work great for our energy needs.
But this new location that sees the sun year round is 500 feet away from our cabin, and 600 feet from our guest yurt, and 600 feet away from where we hope to build another guest cabin. It's only 30 feet away from a nearby structure. We'd like to trench wires so that we can provide power to all these various locations.
Questions for the charitable:
1. Am I correct that connecting the structures to the power means trenching electrical wires from each structure to the Victron Multiplus II?
2. I am vaguely familiar with this wire size calculator, but I'm not sure how to calculate the voltage and amps that will travel through the wires to the several structures. I assume the Multplus II will be providing the power to the wires, and if so, what voltage and amperage does it supply power at?
3. I assume the wires will connect to a breaker box at each structure, but is there any other component required between the Multiplus II and the wire to the structures?
4. Does this plan pass the smell test?
Many thanks for any continued help with our evolving system design. We're hoping to order all this equipment within the next month so we can be ready to install it this spring. Got lots of trenching to do...
I had previously been planning on installing PV at our cabin that we just built last summer as detailed in this thread. But thanks to the many great inputs from people we got in that discussion, we've changed our original vision a lot.
Now we are planning on using LG440N2T-E6 bifacial panels in two different strings of 6s2p, wired into a nearby Victron 450/200 SCC, connected to a nearby Victron Multiplus II, charging a nearby 48V battery bank with a nearby Honda EU7000 generator plugged in to backup charge the battery bank as required.
The Victron equipment and battery bank will be buried in a root cellar structure with a small cabin above it, to keep the batteries from getting too cold in the winter and to keep from having to use PV to heat them.
Worst case, the PVWatts calculator shows this ground mount in the new location should produce 12KW of power on the darkest day (not accounting for any gains from the panels being bifacial on a snowy day). That will work great for our energy needs.
But this new location that sees the sun year round is 500 feet away from our cabin, and 600 feet from our guest yurt, and 600 feet away from where we hope to build another guest cabin. It's only 30 feet away from a nearby structure. We'd like to trench wires so that we can provide power to all these various locations.
Questions for the charitable:
1. Am I correct that connecting the structures to the power means trenching electrical wires from each structure to the Victron Multiplus II?
2. I am vaguely familiar with this wire size calculator, but I'm not sure how to calculate the voltage and amps that will travel through the wires to the several structures. I assume the Multplus II will be providing the power to the wires, and if so, what voltage and amperage does it supply power at?
3. I assume the wires will connect to a breaker box at each structure, but is there any other component required between the Multiplus II and the wire to the structures?
4. Does this plan pass the smell test?
Many thanks for any continued help with our evolving system design. We're hoping to order all this equipment within the next month so we can be ready to install it this spring. Got lots of trenching to do...
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