Did anyone ever get an answer from manufacturers?
Example, not that long ago really, they used to quote the the KW rating for 240V Electric showers, from that you could calculate the expected heater impedance and current rating.
So far so good.
Then our nominal voltage changed to 230V to Harmonise with Europe etc.
But the manufacturers kept their stated rating.
Some then pointed out that at 230V a straightforward resistive element (non electronic) shower would actually run at less current and less voltage (if the voltage was actually 230 not 240) therefore less KW.
So they started, I think to list both ratings, probably to keep trading standards happy .
So, the advertised shower KW nowadays, which rating do they give in the headline power advert?
