neutrals

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  1. M

    Identifying single core cpc's and neutrals

    Just wondering if anyone has any handy tips when trying to identify single core cpc's and neutrals? I work in a few food factories that are in constant production and switching off supplies is not an option, so identifying circuits can get pretty tricky. Identifying neutrals is pretty simple...
  2. M

    Identifying single core cpc's and neutrals

    Just wondering if anyone has any handy tips when trying to identify single core cpc's and neutrals? I work in a few food factories than are in constant production and switching off supplies is not an option, so identifying circuits can get pretty tricky. Identifying neutrals is pretty simple...
  3. J

    Insulation resistance testing Lighting circuit

    Hi everyone. I'm looking for advise on how to test IR on commercial lighting. There's so many lights on 1 circuit , do I have to take out all the lamps in all the lights to perform the test or can I simply test between LN -E ? Even though I have spent lots of time testing domestic installs and...
    • Joseph Lewis
    • Thread
    • circuit disconnect insulation insulation resistance insulation resistance testing lighting lighting circuit neutral neutrals readings resistance testing
    • Replies: 7
    • Forum: Commercial Electrical Advice
  4. G

    Problem neutrals

    Problem with neutral. The other day we had a problem with a circuit not working correctly. The circuit is a radial,wired in 4mm singles,in metal trunking powering 4 switched fused Spurs. The circuit had previously been dead tested,with no apparent problems. However when the circuit was...
  5. L

    RCD tripping under load

    Installing a split RCD board in a new barn conversion build, IR tests come out clear, ring continuity tests fine, but the RCD will trip out when something is plugged into the circuit, happens on both sockets that are currently running off that side of the RCD but when I swapped one over to the...
    • Liam_Spa
    • Thread
    • circuits fault neutrals rcd rcd tripping right tests tripping under
    • Replies: 17
    • Forum: UK Electrical Forum
  6. bartkusal

    identifying mixed neutrals

    Hi everyone wasn’t here for a while, nice to be back. I got to replace a SP, 16 way fuse board in the office block. It is an old Dorman Smith board. The question I have is: Is there is any tricks how quicker to identify neutrals and cpc’s, when you have singles coming into fuse board in one...
  7. driverman

    2 x RCD's tripping

    Hi guys, tried searching,whereby explanations have been given as to why a RCD will trip by a fault on a circuit that ISN'T electrically protected by the RCD tripping. Typically crossed neutrals or borrowed neutrals. I'm not into testing. Company I work for been called out to an EV bollard with 2...
  8. J

    Bloody loose neutrals!

    So I'm running an Ethernet cable through my roofspace, using only the downlight holes for access. Bit fiddly but gets the job done with a little perseverance. Each downlighter is fed from a junction box. I've been taking them out and for a little while they've been supported only by their...
  9. J

    Burnt neutrals

    Why is it always the neutral that overheats on shower pull switches? I've never seen a burnt live conductor.
  10. M

    Lack of neutrals

    Hi guys done an EICR other day 3phase 32 circuits problem is out of the 32 circuits there was only around 10 neutral cables 3 of which was from t&e the rest in singles any ideas guys
  11. D

    230v on disconnected ring neutrals

    Hi all Hope everyone enjoyed wknd. My day been spent trying to get head in testing books to prepare for exams. Not got much testing experience so trying to make most of time and testing a few circuits I indoors. Probably missing something really obvious but this bothering me a bit. When...
  12. W

    Trailing edge dimmer interference

    Have installed 11 led downlighters to be controlled by a trailing edge dimmer switch , Inbetween the downlighters are some 0.5 watt led lights which are separately switched , when the smaller led lights are switched off the led downlighters turn dim for around a second then go back to full...
    • Welshsparky
    • Thread
    • dimmer downlighters interference lights neutrals rotary switch trailing
    • Replies: 5
    • Forum: UK Electrical Forum
  13. M

    RCD not tripping under test

    Hi all. New user, but have lurked around here and used advice in other threads before, but haven't been able to find this problem anywhere, so figured I'd register and give it a shot. I've put in a new dual RCD consumer unit for a customer, went through all the testing with no problems, tested...
  14. C

    2 Lines and 4 Neutrals??

    Noticed today at brothers outbuilding that the consumer unit (which is fed off the msain cu in the house) that on the lighting circuit there is 2 lives going to cb but 4 neutrals from same going to neutral bar for the light circuit? It was only a visual look but wondered if any ideas spring to...
  15. ses

    Fused neutrals

    Hi Just trying find reason for not allowing fused neutrals in a fuseboard if there is one I know why its dangerous to have fused neutral in service head A single-pole, fuse, switch or circuit breaker shall be inserted in the LINE conductor only. OR Automatic disconnection in the event of a...
  16. T

    Neutrals in switches

    Hi all. I'm new to the forums. Ive been a practicing electrician now for a couple of years having been back to night school and got my 2330 and 2391 and 17th edition quals. My main buisness is bathroom installation but now do electrical works also. Primarily I got the quals so I could get on...
  17. G

    Neutral - Earth faults

    Had a quick look at a job which has it seems a neutal to earth fault. Set up TNC-S feeding DB with 5 MCBs, and 1 RCBO feeding lighting circuits. It was getting late and I was tired, so I suggested to the client you have a possible neutral to earth fault, and the circuit in question will need...
  18. D

    Neutrals in light switch

    I was wondering what folks do with their neutrals when three plating at switch? I've been using wagos, but I was chatting to another sparks and he was saying that he had been pulled up for not securing the neutral in the box. What are people's thoughts?
  19. T

    RCD doesnt trip on test.

    Hi I have a 6 way split load board located in the shed and served by 10mm SWA. Anything on the unprotected side of the board tests and works fine. However this is not the same for the protected side. I can plug a radio in and the circuit does not trip, but if I use the lawn mower or a drill the...
    • Templer
    • Thread
    • button doesnt neutrals protected rcd test trip trips
    • Replies: 50
    • Forum: UK Electrical Forum
  20. U

    Joint neutrals on lighting

    Hi. Up and downstairs have been interconnected in many places. RCBO's for each circuit won't work without re-wiring. Originally on 3036's. board been upgrded to RCBO's on all else. Is it better to a) put up and down on same RCBO? b) put both circuits into 6a mcb's so they are separate still. Or...

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