This is a funny one. If we only used the van in summer, I’m confident that we could get along happily with just a 12V installation. However, we camp all year round and the EHU comes into its own in winter, AND, we use the ACSI card for off peak camping, the ACSI rate includes EHU as part of the deal.
Adding EHU capability at the conversion stage is peanuts in the big scheme of things, and it adds another option & level of redundancy into your setup, so why wouldn’t you?
You never know what’s around the corner, and adding things later, is always more expensive & complicated than doing it at the build stage.
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