neutral

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  1. S

    Live & Neutral swapped on sockets?

    Hi Recently my son complained that he was getting shocks from his laptop when plugged into the mains in his room. I checked the socket and the others in his room and the wiring looked fine - red to live, black to neutral and firmly connected. I then used a plug-in Ring Main tester which...
  2. Pretty Mouth

    Open neutral in cooker

    A client has a Kenwood CK405 dual fuel range cooker, for which the smaller of the 2 ovens doesn't work. The elements tested out fine, but live tests showed that both N and L sides of the elements were at 230V to E, so presumably an open neutral. I'm guessing it's a loose connection somewhere...
  3. HappyHippyDad

    Can I confirm how to test for and how to find a borrowed neutral?

    During some testing I found a N-E IR fault on the kitchen lights of 0.1Mohms. I also found a N-E IR fault on the ring sockets, again 0.1Mohms. This could have been a coincidence, but I disconnected both neutrals from the neutral bar (i.e the kitchen lights and sockets) and tested between them...
  4. J

    Are these earth wires connected to neutral?

    I found a picture online of a standard UK connection in a block of flats. Where I have circled blue, would those earth clamps around the orange cable somehow cut into the neutral wire to connect within the orange sleeving? Or are they just clamped to the sleeve for some arbitrary reason?
  5. J

    What happens to the voltage/current on the neutral wire?

    If we had 4 appliances to power, one in every room of a house, Once the current passes through them all, the remaining voltage & current is said to "pass back to the source via the neutral wire" Is this an accurate mental model? From what I see, most Neutral wires are somewhere down the line...
  6. J

    UK Running Neutral Wire from consumer unit to Ground henley block

    In the UK, It is said that the neutral wire is connected to ground/earth wire along the way back to the substation. Ive inherited a setup where the incoming SWA neutral wire is hard to join/reconnect to as the previous electrician hasn't used a henley block due to limited space... therefore the...
  7. A

    Shared/borrowed neutral?

    Hi, I have an ongoing issue with an RCD which keeps tripping when bathroom light (not on RCD) is turned off. The issue doesn’t happen every time the bathroom light is switched off but only ever trips when I turn it off. It happens mainly at night and there doesn’t seem to be much of a link...
  8. A

    Help wiring a neutral for timer switch

    Hi, I have ran a light ring off a fused spur with two lights on, each with their own switch (outside and lobby light) I want to put the outside light on a timer but the light only has one wire coming into it (twin and earth). I have wired up the lights as shown on fig 2 in the link below using...
  9. C

    Shock from neutral when changing light fitting - why?

    Hi All, I was changing a light fitting (something I've done many times before). Since it was a switched live to the ceiling fitting I had left the circuit still live (I know but no comments about that please!). Touched the neutral and got a small shock. So used a test screwdriver to see if...
  10. G

    Cloth wiring outlet box load wires got disconnected, how to identify hot and neutral

    Hello all, I have an outlet box in my house built in the 1920s that I am changing to a GFCI. The wiring is cloth wiring so I have a hot and a neutral. On this outlet box I have the hot and neutral line wires coming in from the bottom, and on the top I have 2 load wires which go up to the...
  11. C

    Use neutral as switched live

    Hi: I have 5 lights in the ceiling in my living room. Currently all 5 go to a single box in the attic with some home automation dimmers in the box, and there is a single power in to that box. 6 wires to the box. I want to remove the 5 dimmers in the box, and replace with 5 lights switches in a...
  12. captaincaveman

    Anyone ever come across a neutral using the earth on purpose?

    Just interested in peoples thinking on using the neutral through the earthing system like I came across today. I've come across many wrong polarities tripping mcbs before but not this. The outside front door light live conductor was wired into the lightswitch inside but the neutral was wired...
  13. S

    Smart Thermostat Recommendation - Live and Neutral Wires Only

    Good Evening Everyone Was looking to replace both my old Danfoss mechanical thermostats with a smart thermostat. Was wondering if anyone had recommendations for the following set-up (circuit is 240v). There are 2 solenoids, one for upstairs and one for downstairs, and a thermostat each for...
  14. C

    Neutral fault with LED light fixtures

    Hi everyone, I'm new to the industry(Qualified a few months ago). I have a client with 6 LED light fixtures on the same circuit/breaker, 3 are working fine and 3 seem to have a neutral fault(230v live to earth,+/-90v neutral to earth and +/-130v live to neutral). The rest of the installation...
  15. D

    Determining if wire is neutral

    My wall box has two switches with two black wires connected to each. It also has four white wires on a single nut, not otherwise connected. Are these neutral wires? If not sure, how can I test?
  16. J

    Floating Neutral and Metal back box - OK?

    My Champion generator is set up (according to the manual) as having a floating neutral. The plan was to run a 16A commando hook up cable from the generator, to supply the house via a 4 gang extension cable taken from the hook-up, to power class 2 devices in the house However, instead of...
  17. Shaun H

    Came across this, classic example of question no fused neutral

  18. S

    Open neutral on residential outlets

    I have three outlets (that I can find) that are showing open neutral. I have 80v across hot and neutral, 120v at hot to ground and 28v neutral to ground. I also have one switch to a light that I think is on this circuit that is not working. If I pull the switch and wire it directly (white to...
  19. Calebp43

    Neutral current in a single phase installation confusion

    In a 3 phase system the neutral carries current that is unbalanced. Okay. So in a single phase domestic household the neutral carries the same current as the live otherwise the RCD will trip. So does that mean if we have a perfectly balanced 3 phase system then if I go to one of the phases and...
  20. L

    Shared neutral supplying subpanel

    Newbie to this forum here. I have a question that I need to resolve fairly soon. I have 10/3 from a dual pole 30A breaker using one side of the breaker from the main panel that is direct burial wire going to a junction box outside the house. I need to supply a sub panel to a building. Can I use...

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