Oven and hob on same MCB and diversity.

[Lucien Nunes]

But Y is the symbol for admittance, the reciprocal of impedance (Y=1/Z). Many capital letters stand for quantities and should not be used generally.

Its very often possible to distinguish 0.3I from 0.31 automatically by context (0.3I has dimensions of current but 0.31 is dimensionless.) However if an explicit multiplication symbol is needed to avoid ambiguity or for visual clarity, there is a choice of the asterisk * (from ASCII-based programming) or a full stop aka period or centre dot which is the conventional algebraic symbol to use on paper. Conventions that use the centre-dot for decimal fractions theoretically use the period for multiplication and vice versa. I would understand 0.3I, 0⋅3.I, 0⋅3*I etc as equivalent. In vector algebra the two multiplication operators ⋅ and x signify different operations, but again it would be clear from context that the distinction doesn't apply here.

 

[Midwest]

I've not read through thoroughly all the replies, but when I was calculating diversity for two appliances, I would use two calculations. With one free standing, it would be one calculation.

I based my rational on that the later are sometime supplied with a plug, with very simple cooking activity and the former could have multiple zones for a hob and two or three or more zones for the oven part. Much more cooking activity.

That said, I once had a Range style electrical cooker, which had 3 ovens, manufacturer required 40A supply. With all three ovens going at full pelt, never pulled more than 14A.

 

[Lucien Nunes]

Ours only has two ovens but with both of those on, the grill, all four rings and the lights, it uses about half an amp.

 

[pc1966]

Ours only has two ovens but with both of those on, the grill, all four rings and the lights, it uses about half an amp.

Half an amp? Have you got on of those 11kV cookers?

 

[telectrix]

Ours only has two ovens but with both of those on, the grill, all four rings and the lights, it uses about half an amp.

obviously it's gas or youse fiddled the meter.???

 

[Lucien Nunes]

The burners are gas, yes, but for some reason the clock, lights and rotisserie are electric.

 

[Mike Johnson]

I wonder who decided in the EU to use a comma instead of a period between the € and C, i.e in €3,00?

 

[pc1966]

I wonder who decided in the EU to use a comma instead of a period between the € and C, i.e in €3,00?

It is common in France and Germany (at least) to use the 'point' as a thousands separator and the comma as the decimal place, opposite to our convention. Why it turned out that way I have no idea...

 

[Midwest]

It is common in France and Germany (at least) to use the 'point' as a thousands separator and the comma as the decimal place, opposite to our convention. Why it turned out that way I have no idea...

Too many frogs legs and too much sauerkraut methinks ?

 

[HappyHippyDad]

I realise we have come to the end if this thread, however.... as coincidence happens a slightly different yet similar scenario has arisen.

The customer wants 2 x separate single ovens next to each other with an induction hob above.

The previous answers in this thread suggest treating a separate hob and oven as a single appliance with regards diversity, and I can see that makes sense. We can't just keep adding an appliance on and classing it as one unit though, as single units have thermostatic controls. How would you apply diversity in this case? I'm inclined to use my initial maths here and class it as 2 appliances.