neutral

  1. Tmcdiscord

    How to make sure the wire I used for my smart switch is neutral?

    I'm new to this forum, I live in Saudi Arabia. I just installed a smart light switch that requires a neutral line, as in this picture : when I opened the switch light outlet I found a black wire capped inside and not used, I used a voltage detector on the black wire and there was no voltage...
  2. HappyHippyDad

    What are the dangers of poor insulation resistance results between neutral and earth?

    What are the dangers of poor insulation resistance results (i.e <1Mohm) between neutral and earth? If all other tests are ok, what are the dangers of the above? My thoughts are it may indicate a breakdown of the insulation somewhere. However, what are the dangers of this breakdown between...
  3. F

    Neutral from secondary side of a transformer

    I had a question regarding the neutral wire on the secondary side of a transformer. When connecting H2 and H3 in series, H1 and H4 can be fed 480V to step it down to 120V. On the secondary side, I understand having to connect X4 and X2 together, and X3 and X1 together, putting them in parallel...
  4. D

    Borrowed Neutral/Mains humming?

    Moved into a refurbed flat a couple of years ago and there were a few suspect things about the electrical work which I’ve not got round to rectifying yet. I swapped out all the lighting myself over time (funny how all of the installed lamps were incandescent) and noticed that the Bathroom LEDs...
  5. R

    85V on neutral after space heater on circuit...?

    I'm not at all a certified electrician, but I have a strong self taught background in electricity and electronics. We moved into a new home this year, and Austin got cold this week. I put a space heater in my room for the first time, and after an hour or so it flipped the breaker. Or so I...
    • rrschw
    • Thread
    • after circuit common heater neutral space
    • Replies: 2
    • Forum: UK Electrical Forum
  6. G

    Finding the correct neutral to pull in a DB

    So, I can’t turn off the board, can’t really turn off circuits except the one I am replacing with an RCBO. It’s all singles in trunking no sheaths to trace back to find the appropriate L and CPC, and obviously, nothing is labelled and they definitely aren’t in the correct neutral terminals...
  7. T

    Wiring wall lights, which is live and neutral?

    I have new two new wall light fittings to mount and have three cables coming out of the wall. Earth, live and neutral. The light fitting only has live and neutral. How do I identify which cable is live and which is neutral? Both of the cables are covered in black sheathing, so it's impossible...
  8. D

    Smart wifi switch install with neutral wire

    Hello all My house is built 2005. I was trying to install ge smart switch which has 4 wire load ground neutral and line. Ge says it’s simple diy install. When I remove my existing switch I am not able to identify the neutral wire which according to ge video is white. How do I find neutral wire...
  9. R

    Ground & Neutral Placement in a Panel

    I am pretty sure I know the answer to these questions, but because this isn’t my own panel, I wanted to double-check. I am installing a single 20amp circuit into this panel in Florida and it seems that the ground/neutral bars are full. I believe that you can only put a single neutral under any...
  10. B

    Neutral wire to the house fell

    Seeking advice. My neutral wire from the transformer fell during a storm. This is at a cottage and luckily I was there when it happened. The surge move around the house and popped light bulbs and the GFI's in the kitchen and bath basically exploded and popped a breaker in the panel. I turned...
  11. R

    Light removal, with connected neutral

    I'm looking to disconnect a two lights from a lighting circuit while leaving the main light connected. I can remove the second switched live to the two lights at the 2gang switch however the neutral is in a Jb under the floor boards somewhere. Is it acceptable to leave the neutral, earth and...
    • Roxdox1
    • Thread
    • connected disconnected light lighting neutral neutral wire removal
    • Replies: 2
    • Forum: Lighting Forum
  12. M

    Fused Spur 190v between Earth and Neutral ??

    Hiya Guys, I have a gas central heating boiler that is not switching on at all. It's connected to a clock timer and then to a fused spur. Boiler technician was out today to say the boiler is fine and I need an electrician, hence this post ! He said we have cross polarity on the fused spur. He...
  13. B

    2 Phase and neutral supply ??

    Hi All Question regarding 2 phase supplies. Came across this at a farm house, supply is in 3 phase and neutral to the main dist board, then from the 3 phase board at the farm house out to the garage is a 4 core SWA. They have taken 2 phases and neutral from a 63amp double pole MCB at the farm...
  14. R

    Neutral to earth fault affecting both RCDs

    Hello everyone, I'm newly registered having read the boards from the shadows for a while. I have a question about neutral to earth faults and RCDs. I have read around this as much as I can but being relatively newly qualified my experience isn't as much as the collective members here so I...
  15. BiddeldyBwah

    32a three phase isolator neutral bar?

    Came across one of these today at work. Had L1 L2 L3 and switched Neutral, but also had an N link bar inside. Just wondering what it's for?
  16. Anthony Deakin

    Line carrying voltage, neutral no voltage

    Hi all, I have been trying to work out why all the up stair sockets have voltage coming into the line but none of the neutrals. The ring is on a 16amp mcb. Any ideas why? Thank you in advance
  17. M

    Live and Neutral connection in outdoor lamp

    Hello, I'm DIYer. I purchased a lamp but it didn't come with any instructions. Can anyone help me figuring out where to connect L and N? Please see that attached image.
  18. Alkaline_Steely

    70v on neutral

    Hello. I’ve recently bought a house. I’ve not been living in it whilst I’ve been decorating today I moved in. All of the upstairs lighting is on one circuit. And has previously had down-lights installed in each room. Now I’ve just turned the lights off and noticed that they are still glowing...
  19. T

    Advice needed on neutral issue

    Came accross a remedial whilst at work where a previous engineer had raised a job to investigate poss borrowed neutrals on a lighting db which sits next to a general power db both fed from same rising busbar with same tap off supply characteristics i decided to isolate each individual circuit...
  20. Designmen90

    Connecting ground to neutral in main panel

    Hello everyone ? It's totally confusing for me. It is my understanding that the neutral and the ground busbars should be connected at the main distribution board (schematic attached), but not at the auxiliary or sub panel. But why? I know that if I connect them in sub panel the current from...
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