main switch and diversity

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Lee321

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is it diversity that allows us to have a main switch with less ccc as the sum of all the ccc of all the mcb's?

example?

 
not everything will be running at full load at all times. for a standard house, you can assume 100A max, unless they have 2x showers, electric heating or other high powered loads etc

and the service fuse will always be 100A or less for domestic anyway

 

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