Shower & diversity

[Engineer54]

In the real world you'll be lucky to see 45-50A being drawn for more than a few minutes in any typical house, and probably less in a flat. Seems that these 5 week training courses don't cover real world ''max demand/diversity'', and experience hasn't yet taught them that BS7671 formulas covering max demand/diversity factors don't tend to work too well, ...ok not at all!! lol!! (apart from the cooker diversity formula that is)

 

[Risteard]

Correct me if I'm wrong, but is it not unlikely that someone will be showering in the middle of the night whilst the storage heaters are energised, whilst also simulataneously cooking and have the immersion heater on?

 

[Rob Smith 643]

Re: Shower & diversity

in the real world. wait and see if the dno fuse pops, then they'll come and fit a 80A.

The acid test...

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[Rob Smith 643]

Correct me if I'm wrong, but is it not unlikely that someone will be showering in the middle of the night whilst the storage heaters are energised, whilst also simulataneously cooking and have the immersion heater on?

sounds like my missus on christmas eve, thankfully only once a year

 

[Engineer54]

You could say the diversity comes from the amount of time a shower is going to be in use for!! For most, that's going to be around 10 minutes per person, and not necessarily one after the other, in quick succession!! lol!!