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Something that came to my attention recently was an MCB with an efficiency rating and a predicted KWh decade energy loss figure for the OCPD itself. Do the UK consumer units ever come with efficiency ratings?
I guessed this was in response to some new EU or US regs regarding supply or transmission efficiency but it's not something I've personally come across before. Are there new regs regarding this that you know of? If so I'd be interested to read them.
We factor in obvious losses such as cable losses and motor losses when designing systems but actual switchgear losses (excluding VFD efficiencies etc) are something we've not worried about too much.