mcb | Page 6

mcb

Recent contents View information Top users
  1. E

    MCB operation & cable length

    I'm currently just at the start of my electrical training so please excuse what may be a dumb question. It's a few weeks till I'm back at college and so not able to ask the question there. I want to understand a bit more about cable length. If you're using an MCB as overcurrent and fault...
  2. A

    13A BS1363 socket-outlets on a 40A MCB

    Hi. I found a radial power circuit on an EICR yesterday wired in 6mm2 flat twin PVC cable and have some concerns. I know that the MCB is designed to protect the cable but what about the terminals of the sockets? 13A socket-outlets are rated to 20A max and I am not sure they are designed to have...
  3. HappyHippyDad

    Oven and hob on same MCB and diversity.

    I've just spent an hour getting bogged down with the maths trying to work out diversity for 2 cooking appliances on the same circuit (32A MCB) and same isolation switch, I thought I would give my workings so others can use it as I wonder if some just assume you can still use the 15kW maximum...
  4. B

    BS 3871 mcb on EICR

    Hi all, Do you know when BS 3871 Type 2 MCB's where not allowed to be fitted to a new circuit? How should they be recorded on a EICR, as a BS 3871 Type 2 or BS 60898 Type B? On the EICR they have been recorded as the latter. Many thanks B
  5. D

    Can a 50a MCB be fitted into that space ?

  6. C

    Lighting MCB intermittently tripping

    Lighting MCB started tripping over Christmas. Sometimes you can reset right away, and sometimes maybe the next day, which makes me think dampness due to snow etc. It can trip in the mddle of the the night , when no lights are on It always takes out RCD, but isolating the lighting circuit means...
  7. G

    How do you wire your EM lights? Brown and Black cores in MCB

    Evening gents. Level 3 trainee here so forgive a maybe stupid question but I came across this today. EM lighting circuit, two cores from 4 core SWA into MCB. Brown core switched live off to two way switching, black perm to EM maintaince keyswitch. Maintained colours throughout circuit. Seemed...
  8. Pretty Mouth

    Series arcing causing MCB to trip

    I recently fixed a fault on a lighting circuit. The fault became apparent after some work I had carried out - I rewired part of the circuit for an ensuite refit, plus some additions to other circuits supplied by the same CU. I needed to provide RCD protection to the circuits that I had worked...
  9. J

    MCB sizing

    Is there any issues in having 10amp breaker if the circuit is pulling just under 6 amps? I know the breakers there to protect the cable and the cable is 2.5 3 core armour. Just curious.
  10. P

    Cable and MCB size for oven and hob

    Good afternoon. I'm fitting a new kitchen with a new hob and oven. I hope to use just 1 isolation switch for both appliances. Together the wattage size is almost 11kW. Do I need 10mm cable with a 50A MCB? Is that right? Thanks.
  11. D

    Which is better BS1361 or BS88?

    Was wondering why was BS1361 replaced by BS88 even though BS1361 tends to have a larger breaking capacity according to the on-site guide if I'm reading it right, however, I maybe wrong. For example BS1361 breaking capacity can be 16.5kA to 33kA depending on what type you get, where BS88 is 16kA...
  12. V

    10A MCB protecting a Radial in a Garage.

    This should have been a straight forward install, and maybe it should be and I'm just being an a***, so be interested to know what you would have done if presented with the same thing. Got called out to quote for an Outdoor Double Socket to go on the back of a garage. The house is reasonably...
  13. sajeel

    transformer tripping mcb

    Evening peeps, Got a question i need help with a friend of mine has an american food processor the unit is 1000w 110v i purchased a 3000 w 230 to 110v step down and stepup transformer have set to 240v on input and using 110v output. I am finding due to surge sometimes on start up the...
  14. HappyHippyDad

    Is a Chint MCB identical to a control gear direct MCB (or lewden)?

    I was carrying out an EICR today. The consumer unit was a Control gear direct board. It had one chint MCB in it which had been put in recently. It looked absolutely identical to all the cgd MCB's. Is Chint in any way affiliated with CGD/Lewden or is this just a coincidence?
  15. M

    UK MCB screw won’t undo - what would you do?

    Curious what you would do Screw holding ring final circuits live wires in MCB wont unscrew , it’s literally a ground out circle from what was originally a Philips head screw Therefore couldn’t do end to end continuity I did end to end from socket instead, MCB probably needs to be changed...
  16. Gavin John Hyde

    MCB tripping on Solar PV Circuit

    Have a customer who I do a lot of work for, owns several industrial units. on top of which is a large solar pv set up. Changed the 3ph DB for him earlier this year. the 80 panels on the roofs have until now caused no issues. Solar set up is approximately 8 years old No issues prior to this. was...
  17. littlespark

    Strange fault. Time delayed mcb trip.

    Fault finding. Good to systematically and logically investigate the problem, then the culprit has been staring you in the face... phone call from new customer- no power. get there, split rcd board. “It’s that big switch that won’t stay up”, says the woman Ok, the rcd. Unplugged everything I...
  18. S

    Kitchen sockets MCB tripping - what could/could not be a cause?

    Hi everyone. A DIYer here, not looking to fix this issue (as the house in question is hundreds of miles away...) but to try and help owner to narrow down possible causes. He has had a sparky in, but problem persists. He has a kitchen in a flat-roofed extension. There is a 'reception' room in...
  19. Vortigern

    Ashley & Rock Supasafe MCB replacement or source anyone know of?

    Just wondered if anyone knows where Ashley & Rock Supasafe MCB 45A might be found, new though instead of ebay.
  20. J

    MCB as a Main Switch in Garage Panel?

    Hello and thanks for checking this out. I have a garage with its own consumer unit and at this point I'm trying to get some feedback on the pros and cons whether its best to install a "double pole mcb" or "main switch" in the garage panel before going to the individual mcb's. so whats your...

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

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top