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borrowed

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  1. 2

    rcd problem

    fitted a 12 way split board in place of old 6 way re wirable. 2 light circs, one ok, other trips rcd. dis board has 2 ways off main switch and 5 ways off each rcd. time was running out so i tried faulty circ on one of the 2 ways off main switch. mcb held but still took out one rcd. i split light...
  2. U

    borrowed neutals

    hi i think i might have a borrowed neutral on the up /and down lighting circuits,can someone explain why this might happen.and how to solve the problem, going back monday morning to sort out. i have double checked the the c/unit neutrals our in the correct neutral bar. is my only option to put...
  3. A

    RCD tripping on new cu

    I have installed a replacement (split load) cu fitted with two RCD's. Prior to this I tested all circuits for polarity and insulation and found no problems, except for no (connected) cpc's on the lighting circuits and class I lights on the ground floor which are to be replaced with class II...
  4. E

    Borrowed Neutral???

    Hi All, I am looking for some help, could anyone out there please explain to me a borrowed netutral in very simple terms, as im struggling with getting my head around it? Also test procedure to identify? Solution to rectify when installing 17th ed dual RCD board? Many thanks
  5. tuckermot

    Lighting and the dreaded borrowed neutrals !!!

    Hi all In the board changes i have done i have never come across a borrowed neutral on a lighting circuit,how common is this and between what years was this practice done . Richard
  6. C

    Borrowed neutral

    I have supplied my landing light with a neutral direct from the ccu, due to previously having a neutral from the upstairs ring and the live being fed from dow nstairs. When I fitted a 17th board and had the upstairs lights on one side and the downstairs on the other obviousely the RCD keep...
  7. i=p/u

    borrowed neutral

    only on level 2330-5, could anyone shed some light on borrowed neutrals, as i dont know about them? thanks for your input. im guessing its using a neutral from different circuits and to do with old installations..
  8. P

    borrowed neutral??

    can some of you installation guys enlighten me a little on borrowed neutrals? i was changing a rcd socket outlet in the factory today which was spurred from a water metering control panel, switched the mcbs in the panel and the supply from dist. board, checked for dead, ok, but when the wires...
  9. Golden_Boy

    RCBO's and borrowed neutrals

    If a board is fitted with all RCBO's would a borrowed neutral show up and cause any problems? I reckon not but a mate of mine reckons it would cause trippng ??
  10. N

    Tripping rcd

    just moved an mcb to rcd side of board and now a lighting radial on NON rcd side trips rcd...any ideas? I'lm sure i have moved correct wires.
  11. L

    What is a "borrowed" or "floating neutral"?

    Hello I'm working on a maintenance contract in an office block. The lighting is in a trough type system which uses flouresent tubes - with dimmers it's approx 15 years old I've put together a quote to get this changed as it no longer meets the current lighting levels. But my question is I've...
  12. P

    Borrowed neutrals

    Hi guys quick question for you, what's the best way to search for a borrowed neutral.?I've installed a new dual rcd db and it trips with the landing light only. Cheers and thanks in advance for the help
  13. V

    Shared / Borrowed Neutrals

    Hi, does anybody know (through experience) where borrowed neutrals are normally picked up? 1960's house, CU in garage, both lighting circuits only have reds at the CU, wiring routes from garage through wall to top of stairs (under floor). Havent had a chance to lift the floor as yet, just...
  14. A

    Blooming borrowed neutrals

    Had a crap day, replaced a cu in a small terraced house. No problems until dinner, done all tests with good results, ring main on one side of rcd, and lights on the other rcd ( only 1 x lighting circuit ), and both rcd's were tripping. Found it was a borrowed a neutral from the ring main ( JB...
  15. ringer

    How to resolve borrowed neutral on landing/hallway lights

    Still learning, and not come across this yet, but I believe this is a fairly common problem, so would appreciate some info on how to resolve the borrowed neutral problem. I take it when you come across this situation, you need to ensure that both live and neutral on both hall and landing...
  16. W

    Urgent rcd !!!

    Hi all just doing a board change tested everything which was fine. Gone to turn everything on a loads of faults ! Downstairs lights , immersion and ring circuit in kitchen can get rcd to stay on with these off, what's strange is I can switch something on and it trips both rcds . Could...
  17. E

    Still unsure about testing for borrowed neutrals.

    Hi , I know this has been covered before but i'm still unsure and concerned about nuisance RCD tripping after replacing a consumer unit if there are borrowed neutrals , especially on the lighting circuits. Last time i posted regarding this I was left confused as there were many different...
  18. A

    Borrowed Neturals!!

    Just another pain in the back side, us sparks need to consider when undertaking new Cu changes. Did a little domestic the other day changed the board using rcbos, turned on dowstairs lights fine turned on upstairs and bang both rcbos trip. Ovi a borrowed nutural! ********, after a little digging...
  19. P

    Rcd tripping

    Did a cu change recently on a domestic property. The Landing light which is on the downstair radial. Keeps tripping the rcd in the consumer unit.Before the change the lamp holder had a energy saving low wattage lamp in it which the owners of the property have replaced with a 60w lamp, and like...
  20. M

    Borrowed earth allowed?

    Hi All, As I am about to start my second year on C&G 2330, my knowledge is still very limited. However, I would like to think I can work through a problem and find a solution. I would be very grateful if anyone could clarify the following situation, which I am not sure is acceptable. As...

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