Zs on TT systems

[Keith the beef]

Can anyone enlighten/remind me on the calculation re high loop impedances on TT systems, the 50 volt thing.
where to find this in the regs????
Thanks in advance old fruity's



Keith

 

[beanzntoast]

hi mate,page 50 of the big red book

 

[Keith the beef]

Thats what i was looking at my friend, i have readings in the 9. somethings i thought they were high but now i see they are actually rather awesome.
Thanks
Keith

 

[Mac]

Thats what i was looking at my friend, i have readings in the 9. somethings i thought they were high but now i see they are actually rather awesome.
Thanks
Keith

Take a look at this post,posted by Brightspark yesterday.
BS 7671 : 17th Edition