neutral

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  1. 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...
  2. 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...
  3. S

    Can I connect the neutral and ground when wiring a 3 wire cable to a 4 wire outlet?

    I recently purchased a steam sterilizer with a PID controller and I'm trying to figure out how to power it safely. The sterilizer requires 240v but the PID (if I understand it correctly) uses the return 120v on the neutral wire. My problem is that I have an old house and the neutral and ground...
  4. 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...
  5. 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?
  6. 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
  7. 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.
  8. 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...
  9. 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...
  10. 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...
  11. W

    RCCB tripped when neutral - earth touching

    When replacing a light housing, I found the RCCB was somehow tripped. I first used a pen tester to check the wires and found them normal (no voltage). I then used a multimeter to test again. Here are the results: L-N 7.4 v L-E 6.8 v N-E 3 V After the RCCB was tripped, the readings were zero...
  12. W

    Shared neutral?

    I have three switches. They each control two to three lights. switch A: A1, A2, A3 (3 lights) switch B: B1, B2, B3 (3 lights) switch C: C1, C2 (2 lights) The other day, I was working on A2 and got a shock while A was off. I was puzzled. I then disconnected all six wires (2 each of live...
  13. E

    Neutral went bang - can someone explain this wiring to me?

    I was wiring up an IP65 5ft LED batten today, straight swap for a non-LED version. The light was an emergency and worked off a sensor, no switch. The emergency was wired through the test switch. In the light fitting, there were 4 wires - brown switch live, black live, neutral and earth. As i...
  14. E

    Auto Transformer Neutral

    I'm connecting three phase step down auto transformer. 400V input and 230V output. It's to supply a piece of equipment brought over from America and the load won't be balanced. My question is, is the star point common for both the line and load side neutral connections? I'm leaning towards yes...
  15. saint elmo

    borrowed neutral (follow up)

    just thought i would share this i posted about in a previous thread. 1st and 2nd pic- red and white wires going into landing light (connected to downstairs circuit) 3rd and 4th pic- red wire going down, white wire going into the junction box for the upstairs lighting circuit connecting to...
  16. saint elmo

    lighting circuit mess,borrowed neutral?

    im figuring out my upstairs lighting circuitsto tidy it up and get rid of the old JB's the upstairs lighting circuit is a mish mash of 1.5 and 2.5mm2 cable mostly 2.5mm2 which is annoying as 2.5 wont fit into the down light push fits i have. but the white wire is confusing me a bit 1st pic...
  17. W

    No neutral at Fuseboard?!?!

    Hi guys. Possibly a bit amateur sounding of me. I’m second fixing some flats (that someone else first fixed - pain in the 4rse I know). I’ve come to fit the Fuseboards for each flat, and there’s a 25mm armoured single (brown) been pulled to each fuseboard, I’m baffled as to why I’ve not got a 3...
  18. B

    DIY Small Engine Charging AC to DC, common ground / neutral

    Lawnmower Generator AC to DC sharing common ground / neutral??? Question is general because I am trying understand fundamentals. I will give specifics as to what I am trying to do so you can understand. I am adding a charging system and electric start to an engine that never had one. I...
  19. M

    GFCI won't reset, small voltage neutral to ground

    I do general maintenance at a summer camp that includes a campground. One of our campsite electric posts is having a problem. The GFCI is tripped and will not reset. I tried a new GFCI outlet and same result. I'm also getting about 2.6v from neutral to ground, when measured at the outlet and at...
  20. H

    Bare Neutral Service Entrance

    Hi, I have what seems an unusual situation, and two electricians I've consulted say "I've never seen that before". An outbuilding put up in the early 90's. They re-used an old 60 amp double pull 4 fuse panel. There is a 3 wire underground service line with two insulated hot aluminum stranded...

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