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  1. D

    UK Plug and play hot tub tripping the rcd. My cleverspa trips the rcd plug as soon as i plug it in.

    I have a clever spa portable spa and as soon as i plug it in the rcd plug trips. What rcd plug can i get to replace it. Is it the rcd plug thst is faulty?
  2. D

    The breaker on the right trips after anything from 30 seconds to an hour. I have only two led lights on this circuit

    The breaker on the right trips after anything from 30 seconds to an hour. I have only two led lights on this circuit. Can anyone please help? Source URL: DIY Electrical Forum -
  3. J

    Installed a bathroom vent/light and it trips!

    Hey friends Installed the vent/light on 2 switches to function separately. The first switch operates the light and works fine. The second switch has 2 on/off switches. The bottom operates the vent/fan fine but the top operates nothing and trips the circuit when switched!! Maybe I wired wrong or...
  4. 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...
  5. T


    I have isolated the MCB feeding my garage when switched on trips the RCD. There is no load on the garage I have an internal switch in the garage that switches all circuits off. So the fault must be between the MCB and the garage switch. The armoured cable is under the patch so to dig up would be...
  6. J

    Domestic Selecting which breaker trips first by trip curve

    Hello i'm in the EU and i will be getting 230v 40A service in my holiday house (previously was 3ph) My issue is that the mains come in at the pole just outside the property and i'm required to have a 40A breaker there (so far so good) The wire then comes to my house which is about 70 yards away...
  7. Pip

    DOL starter switch Trips out

    Advise Please. Called out to my local farm, who deal in fruit and veg, to a DOL starter switch which cuts out after a minute or so. This switch controls a 415V 5 amp 3 phase motor running a conveyor belt, and has done so for a number of years. I replaced the switch with a second hand one I had...
  8. J

    Light fitting.

    Hey guys. I've fitted 3 LED chandeliers with no issues. Doing the 4th and having a big issue. Everytime I switch it off, the breaker trips. This one has 2 mains connections coming into the light as opposed to just one with the others. Any ideas?
  9. P

    Added additional LED down/up lighter and now RCD trips after about hour?

    I am a DIY house renovator. I have 5 outside lights connected to a switch in the hall. Power from the switch goes up the 2 core + earth to the first light, then all of the other 4 lights are daisy chained to each other. (Have 2 cables coming out of each light except the last one) all worked fine...
  10. E

    9.5kw Galaxy unvented heater trips RCD

    When water is turned ON the RCD TRIPS. 10 metres from CU, 40A mcb. 10mm Doncaster Cable. Changed to 50mcb and 25mm meter tails. still RCD trips?
  11. Z

    MCB trips ONLY when open in one go all lights together

    I have about 50 led spot lights + more light , all together is about 400w if I open them all in one go together, then the MCB [=6 am] trips immediately, but if I open them one by one I have no problems at all ! I tried to replace the MCB with another 6am and it did the same, but when i replace...
  12. V

    1960s Florescent light instantly trips mains RCD

    Hi all, first post! I'm currently restoring a Rockola jukebox from 1964 and I'm very nearly there, there's a problem with one of the florescent lights which I can't seem to get my head around, one of the three florescent lamps the entire house out as soon as you switch the thing on. The...
  13. M

    Domestic RCD trips when street lights come on, but ...

    Hello everyone, This is my first thread, and with English as a second language, I hope I can get you all trough my post without losing anybody. So, as the title states - my current problem is as follows; My neighbors just moved into their newly built house. One big house, separated into two...
  14. N

    Siemens RCCB trips even while inductive motor is off

    Good day everyone This is my first thread here, and I'm writing because I have a problem which I'm not sure how to solve. Since its company money, I just want to make sure that the conclusion to the problem is correct. We have an autoclave that works at 121 celsius to sterilize with steam. Its...
  15. A

    Domestic Heatstrip THE3200r Trips Switch

    Our sparky has just installed 2 x Heatstrip THE 3200 strip heaters (13A Max Each) which keep tripping the switches in the power board. We have checked the cabling (20A Max Each) as well as the Power board (50A) to ensure capacity. Reading the manual the guide recommends hardwiring the heaters...
  16. P

    Domestic RCD trips every morning between 08.00 and 09.00

    I live in rural Italy. You get to chose your max KW here and pay accordingly. Most home have 1.5-3.0 kw, I pay extra for 5kw. I am at the end of the low voltage lines, one of only a few on this circuit. I constantly have voltage problems, according to my fluke multimeter it can go from 190v to...
  17. R

    Domestic RCBO trips different RCBO

    I've just change a CU and installed RCBO's. There is a 32a SP RCBO suppling a ring final circuit. There is a 6a SP RCBO radial lighting circuit. When the 6a radial circuit is energised the 32a RCBO trips. With the 6a dead the 32a stays in. I expected to find a shared neutral but there is no...
  18. L

    Light fitting trips one RCD, but not if connected to a different RCD

    Hi, I have a lighting circuit which trips the RCD, I’ve got pared back so that if I take one brand new light fitting and wire it directly into the consumer unit with a brand new cable - and still the RCD trips. If I remove that wire from the consumer unit and put a 3 pin plug on it, and plug...
  19. B

    Ground floor lighting trips out mcb

    Hi everyone, My first post but straight in with a couple of issues. I'll start with a 6amp MCB that keeps tripping out relating to ground floor lights. For your info: There is 10 x 3w led recessed lights in Kitchen, 8 x 3w led recessed lights ,plus a main central Led light (approx 100watt...
  20. M

    Domestic Strange Earth Leakage Trips

    I have an odd situation in that I get random earth leakage trips which happen occasionally when I turn off an outside light. I have a standard split board, half earth leakage protected, half not. Trips happen maybe once every 50 times that outside light is switched off, never when it is...
  21. M

    Mcb trips but tests clear

    Evening all Let’s see if anyone can solve this one. Recently wired a new extension. Today connected up ring circuit to 32amp mcb, all relevant dead testing done ir +999mohms and ring continuity.28 .28 .48. So all good turn mcb on and pop it trips off. Rechecked testing removed sockets just to...
  22. Stephen

    New electric cooker causing power to trip at fuse. The fuse is reluctant to flick back on after.

    Hi all. Thank you all in advance for your help and advice. I was hoping to get some help and advice on a cooker issue I'm experiencing. My cooker is "brand new" and I recently had it installed by my father inlaw (competent tradesman although not an electrician) The cooker is brand new but...
  23. M

    Domestic Similar places in two circuits causing trip

    I have two line wires coming out of the top of the 'Sockets' B32 MCB. One of those line wires connects to 3 sockets in the bedroom and the other wire connects to 5 sockets in the living room. Each socket takes two line wires, one to power the socket and the other to pass the current onto the...
  24. Deleted member 111795

    Electrician Electric shower trips after 5 minutes

    Hi I've seen a thread on here (which is what brought me to this forum) where someone had an issue much like my daughter has. The shower works fine for a few minutes, but if she's washing her hair and takes a little longer than usual, the shower trips the MCB. Is there an electrician on here...
  25. V


    Hi all OK..did a cu change yesterday .. old wylex with an external rcd for a new amd3 dual rcd cu. This morning the customer rings to say the shower has tripped the rcd. Turn up on site..and the rcd that has tripped is not the one that the shower circuit is on.! So i check for crossed over...
  26. B

    liftmaster trips RCD when using open command?

    I have gates with liftmaster sub 300m underground motors. 9 years old and worked like a dream. Now used internal open switch last friday and after 3 hours when I switched to close it TRIPS the RCD. Did some trouble shooting and tracked it to motor 1. Hooked up this motor to power supply, its...
  27. M

    Garage consumer unit rcd trips out

    Hi all , i am new to these forums so please bear with me. I am needing some advice on what to replace for this fault. I have a relatively new garage consumer unit made by MK . 5 way unit. It has five seperate mcbs and one rcd. I have six flourecent lights. Each on a separate switch. But two of...
  28. Nick Grant

    Grill Door Trips Breaker

    Hi, Bit of a strange one this, our oven of 8 years is causing the power to shut off when ever you open the grill door. Everything is fine with the Oven and the hobs. If the oven is still switched on at the wall (Red Switch) and the grill is turned off on the oven, it still trips the electric...
  29. K

    Fault on domestic home wiring

    110v from switch to switch (see attached picture), tn-cs system with 30mA RCD in Place, trips fine when tested at 100% and 500% customer complained of getting shocked when touching both switches at once but doesn’t trip with this fault, have a few theories, but any suggestions?
  30. J

    Turning on light trips at fuse box...?

    Hi there I'm having a bit of a difficulty re two sets of lights on the downstairs that keep tripping the fuse box when I go to turn them on. The story.... I was asked to take down 4 lights for a house move and replace them with basic ceiling roses, simple enough, yeah!!? Lights all down and...
  31. G

    Hydroboil trips mcb ???????????????????????????

    hyrdoboil trips mcb? Element is 2.4kw ohms test was 23 Ohms and IR was 300 odd. Had disconnected element from thermostat and power did not trip but element seemed perfect
  32. A

    Two Lights One Switch Trips Or Blows Every Time

    Hi All! I'm currently trying to add some lights into my garage. I brought a pair of LED fluorescent style lights but am having trouble with them. I've managed to get them to light up but every single time I switch the light switch it either blows a fuse or trips the breaker on the board. I...
  33. H

    RCD trips a few minutes after lights turned on

    Hi all, I am trying to diagnose the following problem. After coming back from holiday, we noticed that our RCD keeps tripping a few minutes after our kitchen lights have been turned on. If the kitchen lights are kept switched off, then everything is ok. The lights were GU10 spotlights...
  34. C

    External RCD trips Consumer unit RCD

    I have an external RCD unit to protect outside lights. This trips intermittently, when it does it also trips the RCD in the consumer unit. If I test the external RCD with the trip switch, it trips and also causes the RCD in the consumer unit to trip. I have tested the circuit and the tests are...
  35. P

    Garage wireing

    im in a brand new build and paid for mains into the garage, I've discovered the builder has spurred off the back of one of the front room sockets, through the back of the wall to an external junction and to the consumer unit in the garage. If something causes a trip in the garage The consumer...
  36. H

    Oven Element Quick Question

    Neighbour having an issue with oven. Will work fine for so long and then it trips off the RCD. RCD resets but oven will not work after that for a day or two. Neighbour seems to think it's been since her husband cleaned the oven. I suggested changing the element but would be a bit of a gamble...
  37. L

    Hello! Need help :-)

    Hi there, I've joined this forum to see if I can get some help with an electrical problem I'm having with my home. We've already had two electrical companies out to have a look, and they've both been stumped! We have a Honeywell CM927 Wireless heating control system, and about half the time it...
  38. N

    Mig welder

    Hi guys, I've gone to a job and the customer has a 5-5 split Rccb board, and there shed is wired from a 32amp mcb. But when the welder is in use it trips the RCcb the welder is brand new. What could be the cause? Cheers
  39. D

    Generator tripping

    I'm not a sparks.. but I'm hoping for a bit of advice for an animal rescue charity in kent.. Their generator fine on 110v but as soon as it's switched to 230v it trips even with no load... any ideas please?
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