411.3.2.2 iee 2382

[bathroomboy]

Have I read this right, just swotting up for my 2382 and looking at max disconnection times, the big red book Iv'e just spent £60 on says 0.2 in table 41.1 page 46, checked osg and it's what it should be 0.4

 

[bcm_spark]

0.2s for TT me thinks, hence the need for an RCD. 0.4s for TN systems.

Scrap that I just had a look in the book. Over 230v it is 0.2 seconds. Over 400v it is 0.1s

 

[Spudnik]

TN Systems 120-230 is .4s
TT Systems 120-230 is. 2s

 

[bathroomboy]

Yes but is this a printing error in the red book?

 

[Spudnik]

I think what you may be missing here is the OSG states 'not more than'.

I must admit, the OSG does have a fair few errors in it and so now, i check 7671 just to make sure.

Personally, i would go with the BRB rather than the OSG.