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  1. C

    What would fit this DB

    All is in place
  2. C

    What would fit this DB

    10.8 KW
  3. C

    What would fit this DB

    This will be the best way to go if I can’t fit anything in the board, I don’t think I will as it’s an old 3871 type MCB.
  4. 58439A53-9499-44B9-9089-E93BA35297C4.jpeg

    58439A53-9499-44B9-9089-E93BA35297C4.jpeg

  5. C

    What would fit this DB

    Hmm the pic didn’t attach to my post, there we go this is the board
  6. 37A38153-7FE4-4294-9EB3-89BE6F7AE61D.jpeg

    37A38153-7FE4-4294-9EB3-89BE6F7AE61D.jpeg

  7. C

    What would fit this DB

    Without changing the fuse board what would be the best way to get a 50a supply to a shower. I was hoping If I could not get an RCBO just an MCB to supply an RCD unit. Wishful thinking
  8. C

    Rather High Ze with all the bonding in place

    forget the bonding mate i was saying it out of interest can we just get back to the point, the Ze is high with the main bonding disconnected, i assume the DNO will need to be notified and if so are they obliged to repair the Poor earth
  9. C

    Rather High Ze with all the bonding in place

    sometimes with the bonding connected you get parallel paths that artificially lower the Ze, i am well aware that is cheating which is why i disconnected bonding
  10. C

    Rather High Ze with all the bonding in place

    With the bonding disconnected 3.25Ze which remains relatively the same with the bonding connected again
  11. C

    Rather High Ze with all the bonding in place

    3.25Ohms sorry that was quite an important detail
  12. C

    Rather High Ze with all the bonding in place

    Carrying out an EICR on a property in london, the supply is a TN-S supply with an incorrect tenby earth clamped around the PILC Sub mains cable. Long lead tested all the main bonds and i am very surprised to still get such a high reading with these parallel paths in place. 3.25ohms With the...
  13. C

    When changing a DB on a TT

    hello people Never changed a DB on a TT system before, question is if all final circuits will have 30ma RCBO devices what (if required) RCD will I need to install on the meter tails supplying the DB. The rod currently with the Earth to MET disconnected reads a healthy ze- 98ohms which is quite...
  14. C

    First time in years could not find fault

    Ok very embarrassed as client called another electrician round as I had been busy on an install. They unplugged the one thing I thought would be fine as it was brand new and fixed in. Bigger question how does one faulty washer dryer prevent the entires 1st split set of MCBs from switching on the...
  15. C

    First time in years could not find fault

    split load DB Every circuit (7circuits) 1st half tripped RCCD And two circuits second side tripped The 1st RCCD whist the second RCCD supplying these circuits remained on?? Swapped over the RCCDs to prove the units were not faulty. Removed every neutral to prove borrowed neutral not at fault...

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