Discuss TT system - Reg 411.5.1 in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Just looking at the second part of this reg with the statement " The neutral point or the midpoint of the power supply system shall be earthed. If the neutral point or midpoint is not available or not accessible, a line conductor shall be earthed"
My question is... I assume they are talking about the connection at the transformer sub station and if so why did they feel the need to add this, as I haven't seen it there before now?
 
TT system - Reg 411.5.1 {filename} | ElectriciansForums.net

reg 411.5.1 it states every exposed conductive part is provided by a single PPD shall connected ,via the main earthing to the common earth terminal .
 
Hi - yes that is a new sentence in the 18th. Like you, I think they must be referring to the transformer mid point being earthed at origin, as per fig 3.10, which has not changed. Sorry, I’m at a loss why they’ve added it too.
 
Just looking at the second part of this reg with the statement " The neutral point or the midpoint of the power supply system shall be earthed. If the neutral point or midpoint is not available or not accessible, a line conductor shall be earthed"
My question is... I assume they are talking about the connection at the transformer sub station and if so why did they feel the need to add this, as I haven't seen it there before now?
This relates to portable generators.
 
I do you know why the a88 holes write the books and put the appendix at the back of the books is beyond me. when you are looking for things ,they has well right it in Chinese. or Arabic .
 
I do you know why the a88 holes write the books and put the appendix at the back of the books is beyond me. when you are looking for things ,they has well right it in Chinese. or Arabic .
It's like trying to read one of your posts Buzz... :D
 
Thanks for all the replies.... much appreciated!
I fully understand the principles of a TT system, but thanks to those who added anyway, just not the unnecessary insert in the regs and for what reason this is helpful to anyone, to be honest.
 

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