they assume the EU standard, and has a different insulation that connection wire.
I would not worry about a short piece of connection wire, if that is what you need, just the long run to the panel is best to use solar wire.
Excuse my ignorance, but what is "solar wire"?
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2020 Regency Ultra Brougham, IB model
2022 Jeep Wrangler Sport S toad
Roadmaster baseplate and tow bar
"ferrules" implies iron based metal sleeves encapsulating copper stranded wire. I would imagine the iron reduces conductivity and adds a lttle resistance, as well?
Are there copper ferrules?
Of course there are copper ferrules. And aluminum and even plastic.
In this case “ferrules” refers to “objects generally used for fastening, joining, sealing, or reinforcement”
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
Solar or PV (photovoltaic) wire is specially designed for use in transmitting current from Solar Panel. Special Insulation and low loss
A link to where you found the info that "solar wire" has a lower voltage loss per the wire size & length of wire than comparable wire, would be very nice.
If there is such a thing as solar wire, I would think it would refer to wire that can withstand the rays from the sun that damages most wire insulation.
I would say that the video and wire being discussed is for residential solar power systems. Systems with higher wattages, longer runs and perhaps even higher voltages.
I doubt for your RV you need anything other than the correct gauge and UV resistant sheathing.
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad