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Engineer54
OK, you've got me interested now. We've pretty much established that the domestic voltage optimisers are just snake oil, and given that we're not talking about PF correction in this instance....how come it's (maybe) beneficial here?
Bit of a difference between domestic and commercial systems.
Domestic systems are only any good if they can cover the whole load and not go into a by-pass mode, as soon as the load gets anywhere near where it could start saving money!!
Unfortunately those domestic units that can be connected to the overall installation are far too expensive and therefore the payback periods are unrealistic for the general homeowner.
Commercial units are also expensive but are offset by various business tax offsets and other commercial incentives. Generally pay-back periods and reduced and quarterly electric bills can be much reduced. So overall the commercial systems are much more favourable, than any domestic user would ever see!!
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