mcb

  1. strider6

    EVSE and RCD Questions.

    I'm obviously still new and learning about what I can and cannot do, but essentially I want to install an EVSE at my own house for an electric van, I intend to run a 6mm T&E in surface trunking/clipped direct, through a drilled hole in the wall and then out a wiska box through some flexible...
  2. R

    Contactum 7106 mcb

    Does anyone know if the new Contactum mcbs fit the old ones . If not are there any brands that do ?
  3. TheArcMan

    UK Selectivity, mcb vs fuse...

    Hi all, Been browsing these forums for a while, always great to learn a new way to skin the same cat. Anyway, cut a long story short, was an apprentice for a top spark, he packed it in for a new 7 figure income career. I then took a break thinking I should do the same, then I realised not...
  4. M

    Trip MCB at times RCD too intervals days or hours; test if faulty appliance

    Hi I am asking for help as a novice and 1st time user of this forum. Recently started to experience tripping of MCB & sometimes with the RCD at random times, intervals can be days after resets or several hours. Could an appliance or appliances be overloading the circuit? How can I test an...
  5. A

    MCB WYLEX b6 6 amp are they repairable?

    Have 2 of the wylex MCB b6 6 amp breakers that I've had blow, are these repairable ?
  6. W

    Can you feed a RCBO with a MCB

    So here is the thing Rhere is an old MEMSHIELD TPN+E Board that is pretty mich obsolete. The only place that sells their breakers would be Ebay right. After having EICR done on it it's been flagged that It requires RCBO/RCD for sockets right. So here is where we are at It's not really...
  7. M

    hi all what is BSEN number for wylex nsb mcb is it 60898 ?

    hi all NSB 32 wylex mcb what is the bsen number is it 60898 ?
  8. N

    40a MCB to 2 gang socket - want to spur off to FCU at 13a for freezer over winter

    Hello everyone, We had an electrician over, who fitted a 40a MCB in the house consumer unit to supply a new build garage. It's underground SWA, in conduit also. He temporarily fitted a 2 gang socket so we could use power tools whilst we complete a fitout internally, although in that use case...
  9. L

    Ceiling rose connection tripping MCB?

    Hi guys, I have recently encountered that my circuit breaker for the upstairs lights keeps tripping. I flick it back on and immediately it trips off again. I think the issue is coming from the bathroom light. So I have had a look at the ceiling rose and the picture shows what is going on. Note...
  10. S

    Lighting MCB keeps tripping after changing the kitchen light

    I'm not sure what's going on with my kitchen light. I've replaced an old 28W CFL fitting with a new 4 x LED GU10 fitting (a cheap one from Screwfix). Although the light turned on after flicking on the MCB, when you turn it on or off the MCB trips, and sometimes the RCD, too. I removed the...
  11. S

    32Amp MCB tripping initially and then staying on when pushed back up?

    I have a 32amp MCB for my heating (heat pump) and when the heating comes on, it trips after a few seconds. If I push it back up it works fine until the next time the heat pump calls for power. I thought it might be faulty so I swopped it out but had the same issue with the new one. What might...
  12. finhudson16

    Seemingly under-rater MCB for wire size

    Hi All, I'm looking at installing an induction hob in my kitchen (upgrade from gas) and I gather that it can be added to the cooker circuit if there's enough capacity. In the fuse box and at the cooker end, the cooker circuit is wired in with 6sqmm cable, but only has a 16A MCB which I gather...
  13. timhoward

    MCB trip (not RCD) during loop test

    I just finished a garden room supply. The customer already had a CPN garage consumer unit that the last sparks left there, brand new in box, and with some misgivings I agreed to use it. It came to testing. Zs@DB of 0.3 ohms in garden room. CPN RCD main switch tripped x1 at 21ms The lighting...
  14. M

    C type MCB time and Log logs

    Hi guys Have a circuit its OCPD is a C type 80A 10ka 60898 MCB with a pfc of 1.11ka. On the log log graph for this device I’m struggling to understand the time for it. It only goes to 800a? I’ve spoken to the NICEIC who say it would operate withing 0.1 seconds but I’m struggling to see how...
  15. timhoward

    Lewden MCB compatibility

    Hi all I can't remember if the current range of Lewden MCBs fit these boards? It's to supply SWA so RCBO not needed. Thanks for any help.
  16. D

    Correct MCB sizing or not

    Hi, I recently discovered at my brother in laws that he has a circuit which feeds a outbuilding, but we also discovered that it’s attached to a small part of the downstairs sockets towards the rear of the house! The concern is this outbuilding then goes on to feed another small shed.. is this...
  17. J

    Wiring an MCB beetwen RCD and Main switch

    Good evening, I wondered how the MCB between RCD and the Main switch is wired while watching this video. Photo attached. I assume a busbar link is connected to the main switch and mcb. Do the line conductors and the busbar connected at the same terminal and then go to the RCDSs? Link to the...
  18. rajemessage

    A 2000-watt dishwasher is running on 6 amperes, C grad MCB, how is it possible?

    I have by mistake used 6amps C grad MCB on a 2000-watt dishwasher. though I was asked to put 10 amps. but it is running properly. how it is possible and is it safe? thanking you.
  19. V

    Rats and tripping MCB

    Can i just check something. If a rat decides to chew a cable will it trip the MCB or RCD ? I ask because I had one house recently that had a randomly tripping MCB and it turned out to be a chewed cable. I was surprised as i would have thought it would trip the RCD but it never did. A chewed...
  20. M

    Adding a light to a mcb

    Hello I have moved into a new house and the electric meter and consumer unit are under the stairs. What i want to do is put a door there so can use for storage. The problem i have there is no lighting there. So i want to install a ceiling pendant, the easiest way i can see doing it is running...

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