mcb's

  1. La Poste

    Why do MCB's buzz?

    A mate of mine has quite a few 12v low voltage down lighters installed on a 6 Amp MCB BS60898 Contactum brand. When he switches the load up IE he switches the dimmers of the lights to full power the MCB buzzes like mad, in fact the buzzing increases at the same rate as the power is increased...
  2. trypod

    Newlec MCB's

    Hi Has any one had any issues with Newlec B 32A MCB SB breakers? Had an issue with one tonight tested ok on Friday but tonight no voltage from outlet side?
  3. L

    Correct way of wiring MCB's, some technical advice please

    Hi all, and thank you in advance for any advice and links. I am currently working in Afghanistan, mostly on American systems but the part in question is on a British section of the FOB Im working on, Its 230/400v 50hz system, In a lot of the panels the americans have wired the MCB's backwards...
  4. D

    Are Eton and Mem MCB's Compatable ?

    Can anyone tell me whether I can Use a 32A Type B Eton MCB in a Memera 2000 Consumer unit. I have a customer who has had an extension built needing 7 new socket outlets. I'm hoping to add a new ring circuit on a 32A breaker on the RCD protected side of his consumer unit by installing a longer...
    • Dave1982
    • Thread
    • aus mcb's pat pat testing
    • Replies: 10
    • Forum: Australia
  5. C

    Megger MFT1502 blowing fuses and tripping MCB's

    I had this calibrated recently, yet every time I try a 'No trip' Zs test it either pops the neutral fuse in the leads, or trips the breaker. The only breakers that trip are the 6A breakers, the rest it will complete the test. Using the socket adapter also works fine. It does a Ze reading...
  6. N

    Mix and match of MCB's

    I know alot of you guys will do this but realy it should not be done .especially as the recent Electrium recall showed heres an example a recent CDU fire caused by a faulty breaker and installed by a spark the board had a mix of sector and deopoke mcb's in it when it was inspected the suppliers...
    • nickblake
    • Thread
    • aus mcb's
    • Replies: 36
    • Forum: Australia
  7. S

    D Type MCB's

    Can someone confirm please - I don't think this will make any difference but - would the replacement of a B Type breaker for a D Type have any effect on whether a compressor/motor start-up dimmed the lights in an installation? (assuming that both MCB's were able to cope with the current demands)...
    • Spock
    • Thread
    • aus mcb's type
    • Replies: 20
    • Forum: Australia
  8. W

    Whats going on? MEMshield 2 breaker range

    Can anyone shed some light on this... All my boards here, all 12, are MEMshiled 2 boards, which fit MEM shield 2 MCB's or any of the EATON range with the same DIN rail fitting. So i ring up WF electrical my usual supplier and they have told me they no longer stock such MCB's and they are going...
    • wade88
    • Thread
    • aus boards breaker going mcb's memshield range stock whats
    • Replies: 2
    • Forum: Australia
  9. B

    RCBO's replacing MCB's

    Hi guys, I am quite new to all this and I have a number of questions running through my head. One of them being..... Do most RCBO's fit into the space occupied by an MCB to enable that circuit to be RCD protected as I have seen posts to suggest this might be possible? (Of course this would be...
    • Bud1975
    • Thread
    • aus consumer mcb's possible rcbo rcbo's rcbos replacing space
    • Replies: 19
    • Forum: Australia
  10. J

    mcb's at origin

    i install street lighting, i use lucy cut outs at the origin then mcb's feeding my 6 flood lights at the top, they are 3 phase, a new lad in are work has been getting rid of the lucy cut outs and putting single phase mcb's in at the origin, i think that is wrong. what do you think
  11. G

    time/current characteristics for mcb's

    Hi guys, this might seem a bit of a newbie question, but perhaps someone out there can put my mind at rest! Here goes; consider a 4mm t&e radial circuit as described in brb p363 being protected by a 32a mcb. Now, according to p282, assuming ref method c, the current carrying capacity of that...
    • graham1
    • Thread
    • aus mcb's time
    • Replies: 9
    • Forum: Australia
  12. E

    RCD tripping at half current

    Hi all, Wondering if anyone could throw a few suggestions my way. Was testing a few circuits last week in preparation for additions (extension of house). All going fine until i tested the RCD that the customer currently has installed, it tripped on half current test? I am planning to go back...
  13. P

    Any one heard or use F & G MCB's

    As per the title, I've been asked to replace an MCB and was told it was a F&G 16a mcb??
    • Ponty Massive
    • Thread
    • aus heard mcb's
    • Replies: 5
    • Forum: Australia
  14. S

    Quality of the new Wylex MCB's

    Hi All, just changed a C/U for new 17th Wylex hi-integrity unit from Screwfix £65-00 plus the dreaded.... Really impressed until i put some tape over an mcb to make sure i didn't turn that circuit on, removed the tape about an hour later to find that all the writing on the front of the mcb had...
  15. S

    3pole and single pole MCB's

    Why do they have the same bs en number? Allways fround this odd, and surely if they where unique to each other it would save the confusions on test sheets with 3 phase feeds.
  16. P

    Merlin Gerin RCBO's & Squard D 3 phase MCB's

    Job lot of: 9 x C20a RCBO's 7 x C16a RCBO's 1 x C32a RCBO 1 x C32a RCBO - Schnieder, practically new All used, some in really good condition other have the bottom clip missing the lot for £50 plus delivery, or you can pick them up. 4 x C16a 3 phase Square D KQ boxed 3 x C32a 3 Phase Square...
  17. J

    FOR SALE - misc mcb's / mccb's

    Hi again, still got loads of mcb's and mccb's for sale still on ebay. please click on this link and then view other items MEM Memshield 2 MCH132 C32 MCB MEM EATON on eBay (end time 05-Jul-11 12:33:48 BST) also have loads of belimo and electro controls actuators and dampers and a few pipe...
  18. S

    Replacing fuses for MCB's in BMS control panel

    HiI was wondering if anyone can help me. I need to replace the the fuses for MCB's in a BMS control panel. Can this be done? And how would i go about doing this?Many thanks
  19. A

    Help with consumer unit and MCB's

    Hi, I am training to be an electrician and would just like some advice, when wiring up a consumer unit you always put the highest amp mcb nearest the main switch, what happens when you get 3 x 20 amp MCB's, 2 of which are type B and 1 type C, does that matter what order they go in. Thanks in...
  20. A

    Help with consumer unit and MCB's

    Hi, I am training to be an electrician and would just like some advice, when wiring up a consumer unit you always put the highest amp mcb nearest the main switch, what happens when you get 3 x 20 amp MCB's, 2 of which are type B and 1 type C, does that matter what order they go in. Thanks in...
    • allybally69
    • Thread
    • aus consumer consumer unit help mcb's unit
    • Replies: 3
    • Forum: Australia
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