Amendment No3 Zs values

[Concorde]

Will attach a table of the new Zs values when I've worked out how to do it!

 

[spark 68]

Easy enough to do for BS EN 60898 type MCBs

((Uo/ (In X type) X 0.76)

 

[Concorde]

No, how to upload the file, not work out the values, I've already done that

 

[spark 68]

No, how to upload the file, not work out the values, I've already done that

Why ?, we can work it out for the above type MCBs, use manufacturer data sheets and correction factors, or use the BYB/OSG

 

[Leesparkykent]

I've got the table in my new BYB ;-)

 

[armbands0]

Just ordered a BYB from Amazon, I look forward to the new Zs values

 

[Concorde]

Ok, seems like you don't need it then. I'll keep it for myself. (Odd that so many of you seem to have rejected something you haven't seen yet - seems a bit negative, don't you think?)

 

[spark 68]

Ok, seems like you don't need it then. I'll keep it for myself. (Odd that so many of you seem to have rejected something you haven't seen yet - seems a bit negative, don't you think?)

Not rejecting it per se, just questioning why you would want to post it ?, this post will be buried in the forum in a matter of days, and as we are all supposed to be electricians on here those electricians whom don't have the BYB yet will need it by July anyway. As the amd 3 mandatory start date approaches there will no doubt be plethora of information on the net as well.

Ps. even if you did not have the new books you could just correct the "old" values (pre-amd 3) by multiplying by 0.95

 

[Silly Sausage]

Just ordered a BYB from Amazon, I look forward to the new Zs values

I wouldn't get over excited, they're only 5% smaller than the existing values! :smilielol5:

 

[telectrix]

nowt wrong with OP posting a table. useful to have to hand.

easiest way to post is to just add image from computer ( 3rd icon from the right, top of reply window. )

 

[Silly Sausage]

Easy enough to do for BS EN 60898 type MCBs

((Uo/ (In X type) X 0.76)

You're missing a bracket there! :wink_smile::tounge_smile:

 

[spark 68]

You're missing a bracket there! :wink_smile::tounge_smile:

Bloody Internet Exploder 11

BTW the 0.76 value came about by multiplying the existing 0.8 temperature correction factor by the new 0.95 C min factor to give the amd 3 values direct. (I think lol)

 

[telectrix]

right that's that one sorted. i'll just carry on with my BRB values and guesstimate @ 3/4 of the book tables.