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 15 replies
  • Subscribers 32 subscribers
  • Views 2180 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

Fixed diesel generator earthing

D4G
Hi folks, i'm after your knowledge again!


I have a 184KW diesel generator which is to supply a test bay for testing machines to big for the building supply.  The generated supply will not be used/connected to the building supply.

Would the earthing arrangements be as TT with a rod at the generator connected to the neutral/star connection?


Thanks in advance ?
Parents
  • 0
    You will find a 30mA RCD (or MCCB or whatever) a problem with the starting current unless the compressors are fairly small or have VFD starting. The compressors should be electrically tested in the normal way before connection, presumably with bolted connections. I suggest HO7RN-F cables for connection as singles, much easier to work with and very tough. 50mm2 singles should do you fine, with suitable lugs for connection to the compressors. An Isolator to prevent having to turn the generator off repeatedly would be good, as well as indicators to show when the cables are live, would be a sensible safety measure.
Reply
  • 0
    You will find a 30mA RCD (or MCCB or whatever) a problem with the starting current unless the compressors are fairly small or have VFD starting. The compressors should be electrically tested in the normal way before connection, presumably with bolted connections. I suggest HO7RN-F cables for connection as singles, much easier to work with and very tough. 50mm2 singles should do you fine, with suitable lugs for connection to the compressors. An Isolator to prevent having to turn the generator off repeatedly would be good, as well as indicators to show when the cables are live, would be a sensible safety measure.
Children
No Data

Community Rules & Guidelines