mcb

  1. O

    SPD's need their own MCB?

    Hi, now everything is SPD's I've been told they need to be on their own MCB. So incoming line goes through the main switch then busbar then MCB and into the SPD, SPD neutral joins into the incoming top of the main switch, and earth attaches to the CPC busbar. I think. What stops the MCB...
  2. Raptor0014

    Compatible MCB for Crabtree Powerstar

    Does anyone know offhand which SP MCBs are compatible with Crabtree Powerstar 3Ph boards? I need to take a 60a supply from this board but I can only find used ones on eBay and the company don’t want to buy used stuff. I can’t seem to find them new anywhere (probably me not looking in the...
  3. O

    MCB size and wire size for an electric oven and induction hob

    Hello I have two new appliances Electric oven rated at 3.95 KW Induction hob rated at 7.2 KW total of 11.15 KW Currently it is on its own supply with a 10mm Twin and Earth and the MBC is 32amps Can you please advise if the following Cable size is sufficient ( behind plaster ) MCB Amp...
  4. D

    Dropped MCB onto tiled floor, damaged internally?

    Hi folks, quick question, I dropped a C16 MCB from 5 feet up, onto a tiled floor. No visible damage so I put it back with the others. Could it be damaged internally so as it would allow current to flow but fail to actuate in the event of over-current? Or is it a case of, if it's damaged, it...
  5. M

    Double pole mcb poles

    I've a C63 10kA DP MCB Is there usually protection on both poles or is 1 pole a switch?. I'm not seeing any markings to indicate either way. Cheers.
  6. A

    Can Wylex plug-in MCB be tripped by anything but overcurrent/short circuit?

    Hello, I have an old 16A Wylex SK type B plug-in breaker in the fuse box in my garage which keeps tripping, and every time (and only at that time) the 32A one of the same type supplying the whole garage in my home's main box also trips. It isn't happening fast, sometimes it takes days to happen...
  7. G

    Can I use a mcb as main switch? And also RCD protection? Read

    So as the title says can I use a mcb as the main switch. Basically to keep it short I’ve took a 25mm sub main to power an outbuilding. Mains coming in will be Henley blocked and new tails will go into enclosure with b63a mcb which then feeds 25mm swa to outhouse which contains its own c/u which...
  8. u2v2w2

    Isolation sliders getting stuck on 3 phase distribution board to the point of partially braking off

    Anyone else had the same issue? Since this company keeps replacing machinery very often the MCB's get changed a lot so over time the slider contacts doesn't engage properly anymore.
  9. LewisM

    Help with finding MCB

    So a friend of mine has a new build (2020) typical new build lashed in. Hes getting an electric car soon however fitting a charger will be a pain in the backside as the meter cupboard is in passage on the side of the house the fuse board is fed by a sub main and is in the toilet under the stairs...
  10. T

    two SPD's in CU , one for zappi MCB and one for the rest of circuits.

    hi guys please help 1. i want to install zappi into existing CU with a type2 SPD should i also protect 32A MCB for zappi with an SPD? 2. i have CU(hager VML410AH) with type A RCCB incomer only is it ok to fit SPD onto it? thanks
  11. L

    Hager NB106 Mcb change to RCBO

    Hi Guys I'm not a Hager user so hence the question. I've been asked to wire in lights and a fan etc for a bathroom for a mate of mine who's a bathroom installer, I've called at the house today to take a look so I can price the work, the existing consumer unit is a plastic board fitted out...
  12. V

    I am allowed to replace the 2.5mm wire from a radial circuit to 4mm and the 16Amp MCB for a 32Amp

    Could you tell me please if I am allowed in England to replace by myself the 2.5mm cable from a radial circuit to 4mm and the 16Amp MCB it has now for a 32Amp?
    • vadiro
    • Thread
    • 16amp 2.5mm allowed circuit mcb radial radial circuit replace wire
    • Replies: 4
    • Forum: DIY Electrical Advice
  13. V

    Maddening MCB Tripping fault

    Hate these. Been called out to troubleshoot a tripping MCB. It's a house I've been to before and I know the wiring is a real dogs diner, but anyway. Got an MCB that's tripping out with no appliances plugged in. The sockets themselves are not in a great state, however continuity and insulation...
  14. S

    Why is MCB tripping after replacing Honeywell controller with Tado receiver

    Tried replacing Honeywell controller (ST6400C) with Tado wireless v3+ receiver. After switching the power of on, the Tado controller lights up and connects to WiFi. However, when the hot water or heating is activated via Tado app, the fuse in the central heating circuit blows off and the MCB...
  15. R

    Any know what RCBO fits these boards? I need to change the B6 MCB

  16. S

    Mcb to fit MEM fuse carrier

    Anyone point me in the direction of what MCBs will fit this board ? Thanks in advance
  17. A

    En suite lighting not going on .

    Guys looking for a bit of advice. Our Mcb on the consumer unit was tripping constant even though nothing was plugged in. Both bedroom lighting and en suite lighting come under this MCB. However until recent both bedroom lighting remain on and the mcb doesn’t trip but the en suite lighting won’t...
  18. D

    UK Radial Circuits Wired in 4mm and 32A MCB

    Guys needvadvice please I was asked to carry out an annual inspction of a DB recently There are 12 in number radial circuits suppling sockets wired in 4mm singles protected by 32A mcb the cables are enclosed in metal trunking and supply 13a socket outlets , are the mcbs now overated as the...
  19. newfutile

    3 phase SPD MCB size

    Does anyone know what size cable to use for a MCG type 2 SPD (3 phase) and what MCB.the manufacturers instructions don’t state any values! also should i use 3 x single phase or a 3 phase MCB?
  20. R

    What’s an alternative MCB that I could get off the shelf?

    Just wondering what alternative I could get for this Siemens mcb? (B16A 230v)

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

Back
Top