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  1. S

    RCBO tripping out

    Hi, ive just fitted a crabtree loadstar RCBO to my split load consumer unit, to supply my smoke detector circuit. When detectors are connected to a MCB they work fine. When connected to the RCBO it trip one of the RCD's. Any advice please?
    • stavros47
    • Thread
    • circuit connected consumer out rcbo tripping
    • Replies: 24
    • Forum: UK Electrical Forum
  2. K

    Lightning protection testing

    Hi all, was hoping someone could explain to me how I test/verify the lightning protection bonding. im generally a domestic electrician as I work for myself, and I've never come across a property with this type of bonding. I'm subcontracting to a local electrician and do all his testing for...
  3. C

    RCBO Trip times very strange.

    Hi when testing an rcbo trip times with 2 vapour proof fittings switched on the times were 378 on times 1 and 154 on times 5 but when i test the rcbo with the vapour proof fittings switched off the times are 21 times 1 and 19 times 5 has anyone had this before. i am using a calibrated robin...
    • cdmh electrical
    • Thread
    • connected fittings loads rcbo strange times trip
    • Replies: 8
    • Forum: UK Electrical Forum
  4. N

    Insulation Resistance Test For Minor Works

    Hi guys, Fairly recently qualified sparky here starting to do small solo jobs. I'm interested in views on insulation resistance testing on works to be signed off with a Minor Works Certificate. (Sorry this is a long post but I wanted to cover everything.) One view on this is that you only test...
    • NickD
    • Thread
    • circuit connected electrical work equipment installation insulation insulation resistance insulation resistance test minor resistance test voltage works
    • Replies: 13
    • Forum: Periodic Inspection Reporting & Certification
  5. T

    Voltage reading puzzle

    230V single phase supply. 6amp Lighting circuit, T&E 1.0/1.0 Readings Highest r1+r2=1.72 IR: L-N, L-E, N-E all >299 Mohms But when energised there is voltage reading across the conductors at the board as follows: N-E 112V L-N 107V L-E 107V Then at the light fittings: N-E 127V L-N 240V (closed...
  6. sajeel

    rcbo tripping

    Rcbo keeps tripping when earth connected it is non earth rcbo. Have performed continuity test on wiring no fault on wiring any ideas ? Circuit is 10a for exterior lighting although nothing connected yet want to sort out earth fault first. Supply is 3 phase tn-c
  7. H

    Earth not connected

    Hi Guys, I discovered that when 'Last Man Out' relays were fitted in the stores, that the earth wires were sleeved but the ends were not connected together. This caused an electric shock from an oversink water heater. I found the same problems at other sites. Company said, ' do not remove...
  8. A

    PDU connected to SurgeX XF2 surge protector = safe ?

    I've been searching for the best surge protector (excluding whole-house solution) and came to the conclusion that SurgeX is the best choice. My problem is that i need 16 outlets to connect everything in my home theather, and the price for the SurgeX devices with a lot of outlets is very...
    • anarchoi
    • Thread
    • connected safe surge surge protector
    • Replies: 2
    • Forum: UK Electrical Forum
  9. T

    Shock from rcd? Circuit not connected

    Hi guys, whilst working on a new installation a while back I was putting socket fronts on an upstairs ring, neutrals and earth's were connected in at the board but lives left out. Whilst stripping one of the legs I went N to E and tripped the rcd. I had hold of the wires when another of the lads...
    • tommysgunns
    • Thread
    • circuit connected rcd shock
    • Replies: 11
    • Forum: UK Electrical Forum
  10. D

    PME final circuits question

    I have a query, Im working on some signage that is connected to a PME supply. This is supplied to a leb header by straight concentric 16mm cable and then to and RCD with outgoing circuits to the sign. Now I have just seen that work by others have been carried out in the form of doubling up on...
    • deegee
    • Thread
    • believe circuit circuits connected earth european final pme question
    • Replies: 8
    • Forum: Commercial Electrical Advice
  11. N

    And here's one for christmas , call out tripping RCD

    All im going to say is i wonder why :Cables jointed in 2 places doesnt look like it in the pic the terminal block was 3 amp , how not to wire in your oven, hob, light in a cupboard,and cooker hood cables used 6mm 2.5mm 1.5mm 0.50mm all into a 60 amp terminal block, take note the earth to the...
    • nickblake
    • Thread
    • attach cables christmas connected out rcd terminal tripping
    • Replies: 21
    • Forum: UK Electrical Forum
  12. W

    currently have a 3 gang switch want to convert to 2 gang

    hi i have a 3 gang switch currently in the living room, The first switch is a one way to a light outside that is no longer used. The second is a two way that is connected to the switch upstairs. and the third is a two way and is connected to a switch the other side of the living room. I want to...
    • wacko262
    • Thread
    • connected convert currently light outside right switch wires
    • Replies: 15
    • Forum: UK Electrical Forum
  13. R

    Sky setup through Labgear HDU 681

    Help please, I have Sky + which was connected via dish direct to sky box in living room, After a recent Re-furb, I purchased the labgear HDU 681, in the hope of distributing the Sky signals to 4 tvs around the house, the setup manual supplied with this is at best very poor and when its switched...
  14. O

    When was it "compulsory" to fit and connect a CPC to the lighting circuit??

    Today I turned up at a job today, to install some downlights and a mirror feed in a bathroom. A nice relatively easy job ..... or so I thought. The owner had been warned that the circuit would need to be RCBO protected and had his "usual" sparky in to do this.... So I took the "futhest"...
    • Octopus
    • Thread
    • circuit compulsory connect connected cpc fit house lighting lighting circuit sparky
    • Replies: 17
    • Forum: UK Electrical Forum
  15. D

    Voltage still present with MCB off

    Hi All, Currently undertaking a rewire of a kitchen and when splicing the new light circuit to the old I inadvertently tripped the front end RCD. I was perplexed as I had proved circuit dead first. However when testing I found that the circuit still had a reading of 1 volt. The property is a...

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