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  1. R

    earthing system question

    Ze = 0.30 PEFC = 806A PFC = 892
  2. R

    earthing system question

    Hi guys, I`ve just done some minor works in a property. Thing is I cant work out what earthing system the property is. The 16mm earth disappears though a party wall with the incoming supply conductors. There is no earth rod or overhead lines I can see. The property is at least 50 years old...
  3. R

    2 questions

    Trouble uploading a pic guys. I think handysparks is correct as when in place there is no access to the top left hand termination point. thanks guys
  4. R

    2 questions

    Hi guys, can an anybody tell me what the black molded box that has the live and neutral tails running through it from cut out into meter is for. also does the cut out and the meter need to be mounted on a wooden board. thanks
  5. R

    Wire cutters

    Hi folks, I need to get my hands on some wire cutters (buy or hire). I've got to make off 2 ends off 400mm/sq 3c SWA next week. Any advice on price, brand etc cheers
  6. R

    Lights dimming

    Thanks mate, I will revisit and check all terminations.
  7. R

    Lights dimming

    I only had half hour to investigate, but must report back to landlord
  8. R

    Lights dimming

    Checked all terminations at CU and on shower circuit. Voltage drop at cu is 10V. I also noticed when the ring main was turned on that the lights dimmed, but not as much as when the shower is turned on
  9. R

    Lights dimming

    Hi folks, why are the lights dimming when the shower is turned on?
  10. R

    3 phase motor Question

    It's extracting particles in the air of the production shop
  11. R

    3 phase motor Question

    Basically wants the option of controlling the speed during normal working hours and if possible to program the motor to run at full speed when leccy is cheap
  12. R

    3 phase motor Question

    He wants to be able to run the motor slower during peak times and program it to run at full capacity off peak Spoon
  13. R

    3 phase motor Question

    Thanks Darkwood, its not an inline motor. If I contact the manufacturer they should be able to advise me I'm sure.
  14. R

    3 phase motor Question

    Evening Guys, A commercial customer of mine has asked me to price a manual and a programmable speed controller for an existing ventilation motor. At the moment the motor is started and stopped manually. I have no expertise in this area so some advice would be greatly appreciated. The motor is...
  15. R

    speed up testing, cert filling

    Basically everything, apart from circuit details/results. All are portacabins and are tested with a portable generator as the destination is unknown
  16. R

    speed up testing, cert filling

    Hi guys, I used to fil all my certs out on pads on the job and hand to customer, that was back when i was doing mostly domestic work. I now find myself doing a lot of commercial testing mainly for the same client. I have started useing the NICEIC online certification......so record results rough...
  17. R

    ring with spurs

    To start with, I would mention the situation in the 'comments on the existing installation' section of the report. The spur should be unswitched, with a 5A fuse also labeled for 5A fuse max. The as for the lighting circuit should then fall within the allowed As for fuse in spur.
  18. R

    Ring main IR question from todays EICR

    Hi Alanl, the resistances are in my original post. This would surely not be the case though as I was doing IR between live/neutral to earth
  19. R

    Ring main IR question from todays EICR

    Yes HHD, the main switch was open..both lives out of MCB, both neutrals out of the neutral bar. The earths all still in earth bar. I know the likelihood is that the fault is down between both live conductors and their own cpc. All other ring mains were all >500Mohm apart from another which had a...
  20. R

    Ring main IR question from todays EICR

    Hi All, While carrying out a commercial EICR today, I was doing IR testing on one of the ring mains an was getting 0.00M ohms between L/N - and the earth bar at 250V & 500V (cant distinguish what 2 earth wires belongs to the other 4 cores) I have continuity on both L & N legs which are...

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