Submain Query

[Electric Eales]

Hi All,
Been asker to run a submain 100m metres from origin to a shed. This shed will have a 7.5kw shower, 6kw oven, 2 x 3kw water heaters as well as general power and lighting(not much about 12 lights & 12 twin sockets)
Not sure if running 3 phase supply would make more sense? Financially and size of cable for glanding etc. Any thoughts?

Thanks

 

[shocking_eg]

best the OP finds out exactly whats being added.

all good, until they decide later they want to add that shower! lol

 

[Billythekid]

best the OP finds out exactly whats being added.

all good, until they decide later they want to add that shower! lol

Ah but the person installing the shower will inherit that problem. He could lose out if he provides a quote based on different design criteria than a competitor.

 

[Electric Eales]

With an Ib of 50amps I can get away with a 35mm, they could save money if they showered at home!!

 

[Guest55]

With an Ib of 50amps

most 2 bed houses use no more than 50a , i reckon my guess at 40a after diversity is closer ;-)
the shower will never get used , they never do in staff bathrooms lol , it'll end up a store room after 2 months. :-D

 

[Electric Eales]

True, could just about get down to a 25mm with a 40a supply
Its one of those jobs that they will moan whatever the price is, so not doing no more. Missing the football on TV!!

 

[GLENNSPARK]

most 2 bed houses use no more than 50a , i reckon my guess at 40a after diversity is closer ;-)
the shower will never get used , they never do in staff bathrooms lol , it'll end up a store room after 2 months. :-D

agreed biff....
still some around though that think just because its got a 100A bullit in it....then it must be pulling 100A...or they put that down as max demand....