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  1. R

    supply cable sizing

    I make it as table 4D4B 1.75mv x 50 x 70 = 6.12volts drop am I doing something wrong Thanks for reply Ronky
  2. R

    supply cable sizing

    my calcs as follows , volt drop table 4E4B 1.85mv/a/mt 35mm =1.35 x50ampsx70mtrs =4.72 volts . 25mm = 1.85mv/a/mt x50amp x70mtr= 6.47volts so not much lighting load so 5% of 230volt=11.5volts allowed and 3% of 230volt =6.9 volts so would the calc with 5% be okay which is 11.5 volts am I getting...
  3. R

    supply cable sizing

    PVC/SWA would be buried in the earth at appropriate at depth
  4. R

    supply cable sizing

    Earthing wood be as TT supply, ie stake in the ground at hut position' bonding as regs, sub circuits would be 6242y and sized, appropriate for circuits suplied
  5. R

    supply cable sizing

    Hi ,I have a wood cabin outside 70mtrs from house incoming supply, I was thinking of using a 35mm 2core pvc/swa, as I think a TT system would be appropriate for the cabin, owing to the distance away from house load would be allowing for diversity would be 51amps, seems a lot but it will be a...
  6. R

    Fuse box installed for £150 what!!!

    Ah yes change the board £150, they are then in the house and the extras start adding up ,Tracing cicuits Bonding ,Testing ,etc ,the customer takes out a second mortage when they get the final bill,
  7. R

    Functional Earthing conductor

    Thanks for that ,checked that page when looking for answer ,must have been blind not to have seen it,never in my whole carrear have i had to connect to a earth electrode so have had no need to know,can you put me right then on the connection between the mcb board and the main earth terminalof a...
  8. R

    Functional Earthing conductor

    A question in the Electacourse home study 2382 is The colour of the functional earthing conductor is :- I answerd green /yellow .which occording to is Wrong ,they say Yellow, i have never heard of a colour for a earthing conductor, ? who is right
  9. R

    fire hoods

    thanks Richard,should have replied earlier, sorry ,butyou have confirmed my thoughts ,thanks again ,ronky
  10. R

    Voltage at light fitting that is turned off

    Thanks you brain boxes ,i have been in the trade for 50 years and only the other day came across this induced/ghost voltage for the first time ,thought i was going mad ,you have proved me wrong just seniel i expect ,no sterile, Regards Ronky
  11. R

    fire hoods

    Do you need to fit fire hoods if the recessed fittings are fire rated to part C, and building regs part B, am using the newlec range NL10687a, any advice please Ronky

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