Query: RE Orion Tr 12-12-30 DC to DC .
RV motor home installation. Is non isolated model beneficial and or required?
Context: The isolation feature is used when you are trying to eliminate electrical noise from sensitive electronics, it isolates both the positive and negative lines from the source and provides an electrically noise free environment. Unless you are particularly interested in this feature it isn't necessary. There is a very wide range of DC DC Converters and often the isolated ones, which tend to me more expensive, have some other additional features over their non-isolated versions.