Which is wrong, the BRB, the OSG or ME!?

[chiplard]

I'm looking for the maximum value of Zs for a Type B 32A MCB. I have found the references in the BRB and OSG and they seem to differ.

Please can someone check i'm not being stupid. Page 49 Table 41.3 of the BRB and Page 103 of the OSG.

Thanks in advance.

 

[keith915]

I think the Zs figures in OSG have already been multiplied by the 0.75 rule of thumb.

Keith.

** Sorry make that 0.8, should have remembered from 17th update... **

 

[chiplard]

That will teach me to read before questioning!

Just found the note on the top of page 100 of the OSG