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neutral

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  1. L

    RCBO Neutral Leads bunched with Main Neutral in Main switch - C3 or C2?

    Hi all, Engineer carried out EICR and marked the above as a C2, I agree, the smaller cables could come loose easily as the terminal is mainly clamping the 16mm tail. Client said C3....
  2. V

    3 wire (2 hots/1 ground...no neutral) Range wiring ok?

    New range on the way and took our the old range (about 2010 install) that was hard wired in with 2 hot wires (black and red) and a green ground wire that was attached to the neutral wire post on the old range. diagram for new range says that 3 wires should be red & black hots along with a...
  3. D

    How is this switch powered? I thought all circuits needed a neutral?

    Usual problem with smart switches - no neutral at the switch, been plenty of threads on it before. Fortunately managed to find some switches that don't need one. So the circuit's permanently 'complete' since the switch is permanently 'on', and actually power is going to the light, but not...
  4. J

    Fuse blown and neutral wire sheathing melted.

    Hi guys, hope you can try to shed some light on what might be the problem. Basically nothing is new, all been the same for 3 years since we moved in but over the past few days when the dishwasher was on (or anything plugged into a socket in the kitchen) I noticed a burning plastic smell...
  5. I

    Borrowed neutral / RCD trips but circuits still live ?!

    I’m just a homeowner, so please forgive me if my question sounds stupid .... i think the lights in the hall of my small bungalow are using a borrowed neutral. I recently went to fit a new light on the ceiling in the hall using the existing connections and turned off the MCB that said “Hall...
  6. W

    Connecting 2 neutral wires is tripping out

    Hi guys, I posted in here the other week and thought I'd figured out my mistake but now I've landed with another problem. I'm trying to replace 2 walls lights - like for like - the 2 lights are powered by a double switch in our living room. One switch controls 2 lights on one half of the room...
  7. L

    There is a one circuit (one voltage source), two phases and

    Hello Electricians, This is my first post and I'm glad to be one of this forum member. However, to clarify my question. I've a "Skin Effect Heating System", fed by 1240 V. The circuit is quit simple, Phase U, Neutral in the middle and Phase V. Phase U and Neutral feeding the heating cable#1...
  8. P

    Floating neutral and UPS

    Here is my dilemma. Picture this arrangement: a system with a 100A three-phase supply will have a RCD incomer (and possible some generator transfer switch in the future). As well as the SWA supply cable's earth there will also be some lightning protection so a few earth rods as well. From the...
  9. M

    Identifying a neutral supply problem?

    Had a call today. Property has 400v 3 phase DB....it used to be old commercial unit but changed to residential. He's been in process of moving in but within day or two appliances starting to burn out. He's father had reported testing some sockets and voltages varied at times when other...
  10. C

    Blown Socket- Possible neutral earth issue

    Hi Members, This is my first post, I live in South Africa with similar domestic DB set-up as UK & Australia. Yesterday, we had a kettle blow the receiver socket in the kitchen and this tripped the earth leakage switch, I am trying to see if I can fix this, I have sa fair degree of knowledge...
  11. M

    What are the implications of a failed Neutral - Earth insulation resistance test?

    Greetings! Newbie here! We have 3 phase installation in our Lighting dimmer rack. During Insulation Resistance testing on Earth-Nuetral, readings was 0.33Mohm on 500v test. What causede the failed test and how can I troubleshoot? Thank you! Markus
  12. O

    Wiring Mishap - Wondering How Much I Destroyed…

    I'm a DIY kind of guy, and was never really fond of household 120V/240V power before, until I had a friend who used to be a journeyman help me understand enough to wire up my house we are completely renovating. So, after putting some walls and trusses in place, and running conduit all day...
  13. Mark Wright

    Short Circuit Line to Neutral where does the current go after the consumer unit?

    Short Circuit Line to Neutral where does the Current go after the consumer Unit? I assume it goes back to the Sub-Station where it is earthed but i'm trying to find this written in a official book etc but finding nothing. Thanks
  14. N

    277 Volt lighting. Y system. I have a string of lights out in a hallway.

    277 volt Y system lighting circuit. A string of lights out in a hallway. Have 277 to ground on both my hot and my neutral. Have only 15 volts between my 277 hot and 277 neutral. This was discovered Friday afternoon, Co. does not pay OT so its my unwanted challenge for Monday. Will look at prints...
  15. L

    Neutral reading 1.8 V

    If I am reading 1.8v on a neutral is that acceptable. Reading on a 3phase 277v lighting neutral. Thanks
  16. I

    Use of Singles for Main Earth Conductor and Incoming Neutral?

    Hi folks, Limited experience here and never come across this before. Whilst I can appreciate the conductors may be the appropriate CSA combined, (I haven't measured them) terminating the Main Earth Conductor in the MET like this with what looks like 4 x 4mm2 doesn't allow for the conductors to...
  17. I

    Need to understand the neutral conductor

    Appreciate there are a lot or questions about this already but I just can't seem to grasp it so hopefully asking the question in my way will help. Background: UK 240v AC domestic system. As I understand it, if everything is wired correctly and there are no faults, I can touch the neutral...
  18. KeenPensioner

    Borrowed neutral - again!

    As I've said before, I'm not a qualified electrician but have worked as a mate a few times. I'm retired now and as a hobby I study all things electrical (domestic). I know this has been asked before on this forum but as an amateur I still can't understand how the wiring for "borrowed neutrals"...
  19. Iain Stewart

    Can I bridge Neutral Busbars in a CU

    Hello, Old Merlin Gerin CU with one RCD in the middle. Can I bridge accross the Neutral Busbars in the CU to make all the circuits RCD protected. Thanks
  20. I

    No neutral smart switch, faulty?

    Hi, I've just purchased a 2 gang no neutral smart switch, however I was sent 3 gang. I thought i'd use it anyway. When i connected the common(S) to "L" & Switch live "L1" & "L3", nothing happened, switch didn't light up, lights didn't come on. My current switch operates 2x lots of led down...

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