what year was that "1.5 times rating" published?
what year was that "1.5 times rating" published?
... from the IEE Wiring Regs. 14th Edition, 1966
I suppose that (unless 25A 'fuses' {MCBs} are available for one's CU, that is fair enough in terms of the 'standard' (OSG) diversity calculations ...My cooker 220 - 240 volt 50 Hz 10466 - 12455 watt and manufacturer recommends a 32 amp fuse.
In terms of diversity, the important question is what would be the average current over a period of time (say 30 mins) if all of the rings were 'on full' simultaneously.As it happens I fitted an induction cooker, and on full power it uses around 10A per ring (without power boost)
I'm old fashioned and tend not to even think about induction hobs - but, in relation to them, you're quite probably correct - i.e. they might well act as 'constant power' loads, hence with a current that increases if voltage reduces. However, for any particular voltage that does not alter the diversity calculation.Not sure if current goes up or down with voltage variation, with oven lower the voltage the lower the current, but that may not be true with hob ...
What is the ceiling of instantaneous current draw that it allows?Yes it does
Ah, yes, apologies, I'd forgotten you'd mentioned that earlier.As per previous post, 31A. Oven has priority. And it reduces the hob heating.
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