maximum demand

[delano]

Is there an accepted rule of thumb formula for maximum demand?

 

[telectrix]

nope.several methods of guesstimating. different methods for different types of installation.

 

[snowhead]

It's very site specific;

Which is likely to be the Highest demand?

15 Electric showers in a Care home with ensuite rooms.
15 Electric showers in a Bed and Breakfast with ensuite rooms.
15 Electric showers in a Football Club Male changing room
15 Electric showers in a Football Club Female changing room

 

[delano]

What's the guesstimate method for a domestic installation?

 

[telectrix]

take your pick.

1.add up the In's of the MCBs and then x 0.4.

2. take 100% of highest load ( shower?) then add rest X 0.4.

3. put down 80% of the supply fuse rating.