Guys,
I got this 9kw instant water heater from ebay and was told it was good for 240V/208V and in the book that came with it there is a table with a bunch of models inc. 208V 50A model and a 240V (208) that runs 9kw at 240 but 6.3kw at 208. The model numbers are not listed in this table which is kinda lame and the unit is German and I think out of production (altho it is 'new').
Since the label outside and the stamp inside both just say 208V my assumption is that this unit cannot take 240V but the vendor claims it will.
Does anyone have any thoughts on how one might figure this out without risking a fire or something?
The element resistance is 4.9 Ohms which by my math gives ~8830W which would suggest this unit cannot run 240 as that would be over 11kw.
Think I'm gonna send it back.