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  1. G

    Multi-core neutrals and earth

    Apart from the shared neutral being dangerous, which I do not think it is in this configuration, is there any reason why we could not wire it as shown?
  2. G

    Multi-core neutrals and earth

    It is more of a parallel conductor design than being a shared neutral in my opinion. The person I am working for is electrically qualified and this is how he said we wire it. I am unsure that is the reason I am asking here. In this configuration it is impossible to get a dangerous voltage on...
  3. G

    Multi-core neutrals and earth

    Hi, I am currently training to become an electrician. I have passed all relevant C&G level 2 exams along with C&G level 3 inspection and testing and principles of electrical science. I have been asked to help design some garden circuits but been given specific instruction on how the circuits...
  4. Planning stage.jpg

    Planning stage.jpg

  5. G

    Mirror light from lighting circuit. FCU or isolation switch needed?

    Hi everyone, Does a mirror light on a lighting circuit need to be on an isolation switch, fused spur or can it be wired directly on the lighting circuit? My thoughts are; My job is to protect my cable, there I have no issue, i.5 mm2 cable to mirror light Local isolation, the mirror does not...
  6. G

    Rear entry three phase board

    Thank you :) I will not use rear entry again. From now on 4 inch metal trunking top and bottom into glands and make off the SWA into the board. And I would insist on the customer purchasing the meter designed to go in the board.
  7. G

    Rear entry three phase board

    My question would be, say if you're PFC and PSSC are less then 18,000 Amps, why would you use a MCCB over an MCB on a main DB supplying a sub DB?
  8. G

    Rear entry three phase board

    The interrupting rating for an MCB is 18,000 amps, and up to 200,000 amps for an MCCB.
  9. G

    Rear entry three phase board

    SO what exactly is the difference between a 16A MCB and a 16A MCCB
  10. G

    Rear entry three phase board

    0.4 sec under 32A and 5 sec over 32A In the situation you describe surly a 50A type c or type D MCB would be the solution?
  11. G

    Rear entry three phase board

    In that situation you would wanna substitute the 50A MCB for a type C or type D MCB?
  12. G

    Rear entry three phase board

    I thought an MCCB was the same as a MCB (actrually CB not MCB as everyone calls them) only for higher Amps, over 63A
  13. G

    Rear entry three phase board

    Trip faster? Does the MCCB not have to trip within 0.4s ?
  14. G

    Rear entry three phase board

    You would have made off the SWA to the end cap of the trunking?
  15. G

    Rear entry three phase board

    An MCCB is not needed as the design current is not greater than 63A per phase.
  16. G

    Rear entry three phase board

    All the circuits from the board i installed will be RCBO protected

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