max demand

[Apache]

The vet-cow-man thingy has been taking on board his learning very well.....he speaks the wise words as spake previously on this ere forumbulator!

Guiness DrinkGuiness DrinkGuiness DrinkGuiness Drink:xApplaud Smiley

I learned!

We've had this before and I couldn't find the thread.

 

[Apache]

I find it now

http://www.talk.electricianforum.co.uk/showpost.php?p=10390&postcount=12

 

[green-hornet]

Good point Patch, I blame the Hornet for this ,he,s flogged us a damp squib.Go back to guessing it then !! :| :coat

ROTFWL

The calculation I use is a general and effective way of calculating on an exsisting installation, the figure I use is 0.42.

The real difference is at best negligable, and is ample for PIR or small EIC certificates.

For a new installation I never use this method as I prefer to design the loading not work up to it.

The correct way( ? )to do it is to use the BRB or OSG, however you will note that it says any other means can be used providing the figures are realistic.

We had a post not far back where my method was more or less within 5 amps or so,of other methods used.