Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 42 replies
  • Subscribers 32 subscribers
  • Views 18156 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Generator earthing

Baldyhugh
Hi


I have a tractor driven Backup generator to install on a farm shortly and have a query regarding the earth spike. Does it need to go directly back to the MET or can I connect it directly into the generator earth terminal, the latter being Quite a lot simpler   In my case? 


thanks

Parents
  • 0
    As above, you might not need short-circuit protection if the generator itself solves the disconnection problem - but if you can't rely on that, then 434.2.1 would normally limit the length of conductors without fault protection to 3m (in addition installing in a manner to reducing the risk of faults and fire and danger to persons to a minimum).


    Oddly when you consider L-PE faults and protecting against electric shock, you can adopt double/reinforced insulation or equivalent for any length of conductor - so it seems a bit inconsistent not to have an equivalent option for short circuits.


    434.3 (i) does provide another exception for generators, between the generator and its 'associated control panel' without an apparent limitation on length (with similar demands for reducing the risk of faults and fire and danger to persons to a minimum) - but is the switchboard really the generator's control panel?


    If you've got a separate MCCB/RCD for the generator anyway, it is really a lot more effort to re-locate into its own enclosure closer to the generator?


       - Andy.
Reply
  • 0
    As above, you might not need short-circuit protection if the generator itself solves the disconnection problem - but if you can't rely on that, then 434.2.1 would normally limit the length of conductors without fault protection to 3m (in addition installing in a manner to reducing the risk of faults and fire and danger to persons to a minimum).


    Oddly when you consider L-PE faults and protecting against electric shock, you can adopt double/reinforced insulation or equivalent for any length of conductor - so it seems a bit inconsistent not to have an equivalent option for short circuits.


    434.3 (i) does provide another exception for generators, between the generator and its 'associated control panel' without an apparent limitation on length (with similar demands for reducing the risk of faults and fire and danger to persons to a minimum) - but is the switchboard really the generator's control panel?


    If you've got a separate MCCB/RCD for the generator anyway, it is really a lot more effort to re-locate into its own enclosure closer to the generator?


       - Andy.
Children
No Data

Community Rules & Guidelines