The difference between the terms Isolated and Non-isolated on the Orion DC-DC Charger and How Would I Determine Which One I Need

[nesswill (Dave)]

@Dean

Isolated and a Non-isolated DC-DC charger

Have you seen this?
Non-Isolated vs Isolated Orion-Tr - VictronEnergy
This might be of interest too.
Victron DC to DC Orion Chargers. Isolated or Non Isolated ? Which is right ? - Voltacon Solar Blog