mcbs | Page 6

mcbs

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  1. B

    starbreaker mcbs

    Job yesterday finding fault on RFC. All good found problem, sorted, turned main switch back on packing up tools tennent says no power to upstairs lights and to combi boiler. Checked board nothing off. Quick check at pendant in bedroom no power same at fcu for boiler(on own circuit). All other...
  2. i=p/u

    mitsibishi mcbs

    the guy i work for has asked me to go to a job other guys are wiring and fitting out at minute to test on friday... well i went there today and had look round and see whats what. its an extension to another building with changing rooms, shower rooms etc(sports fcilties washrooms) they have...
  3. O

    16A MCBs on Lighting Circuits

    I was always taught that the max size mcb for domestic type lighting circuits is 10A due to the fact that accessories are rated no higher than 10A. When I recorded 16A MCBs on lighting circuits as a C2 departure my supervisor has corrected them as satisfactory as the current carrying capacity of...
  4. A

    Old MCBs and switchgear

    I was reorganising our stores the other day and came across a number of old / discontinued single pole and triple pole circuit breakers. They include: Federal Electric / Stablock Dorman Smith Wylex Crabtree MEM On many occasions I've been asked to install new circuits in old industrial units...
  5. A

    Can Anyone Help Please? G.E.T Triple Pole MCBs

    Hi Everyone, I am new to the forum and (not yet at least) qualified however my work in Event Lighting means I have to know a fair amount of theory so one day I might find the time to get there! I have been asked to help with a small amateur venue back home who are currently improving their...
  6. W

    3 phase / single phase MCBS 3871 60898

    All types of 3 phase and single phase mcbs for sale. all used but in full working order great prices
  7. T

    Line to earth fault but MCBs will not trip..Why?

    I was called to a single phase installation in a pub as the staff were receiving shocks when touching equipment such as fridges water pipes etc. I located a damaged cable where line and PE conductors were touching and causing 240 volts on the entire earthing system at the installation. In other...
  8. R

    3036 mcbs

    Hi there, i was wondering if anyone could help me out quickly, BS3036 fuses that still use the original carrier but have been replaced with plug in mcbs....any idea on the BS number of these? Cant find em in the regs book and trying to find max Zs...? Cheers
  9. A

    Upgrading Wylex re-wrirable fuses to MCBs

    Hi, I planned on replacing all the fuses in my consumer unit with MCBs. I found some on eBay for cheap which were listed as working so I got those, but the pin spacing is different to the old fuses. They didn't come with the base socket so is it just going to be a case of getting a new socket...
  10. Amp David

    Square D QOE style MCBs.

    Can anyone tell me if the different generations of QOE MCBs are compatible. Need to replace an MCB with an RCBO, and can only get a newer style RCBO that has been guaranteed to work properly
  11. F

    Wylex NS mcbs

    Does anyone know if you can still get Wylex NS mcb's. Need a 6amp one, but cant find any. If not someone told me that hager, may do one thats compatible. Cheers.
  12. S

    Upgrade lighting MCBs to RCBOs - no 2 way on stairs

    Hi folks, client has asked for upgrade of MCBs to RCBOs on split board to bring up to speed. Upstairs and downstairs lighting currently unprotected and there's no 2 way on the stairs. If I upgrade to RCBO, is there a reg that I need to refer to about the absence of a 2 way? They don't want one...
  13. A

    Different brand MCBs

    A customer has bought a CCU but with MCBs that are a different brand. The breakers fit in the board and on the bar no problem. Is there any reason why this should not be done??
  14. oxford 12

    crabtree type 1 mcbs

    can anybody tell me the m rating of crabtree type 1 domestic mcbs
  15. M

    Trip Testing for MCBs

    I was interested in performing Trip tests for AC & DC MCBs for my customer. I will be injecting double the respective rated currents through the MCBs & check the tripping time against their type curves. Is this method acceptable, quick & portable
  16. O

    Rcd trips before I even switch on MCBs

    Hi all I've just fitted a new consumer unit. 10 way twin RCD. After a very long day struggling in a tight location I powered up. Switched on RCD furthest from isolator, held in OK, switched on mcbs protected by that RCD all OK Switched on RCD next to isolator wont stay in. Even with no mcbs...
  17. M

    what MCBs here?

    as you been very helpful before I have more questions :) what MCBs would suit below described circuits? 1. ring serving 3 heaters, pvc cable in non metallic conduit ref.C, about 25m ring length, live is 2x5mm^2, cpc is 2x1.5mm^2 2. TP serving 1 aircon unit, pvc cable in tray, about 4m...
  18. T

    2 single phase mcbs tripping together

    Any ideas appreciated..I was called to investigate 2 tripping single phase mcbs on a 3 phase board. a 32 amp mcb supplies a ring main and a 16 amp mcb supplies a radial circuit. They are on different phases. The 32 amp mcb does not trip until the 16 amp mcb is switched on and at that point both...
  19. jon jordan

    B & Q split load board full mcbs BG nexus

    been into b n q today seen this on offer £50 inc all mcb's split load 12 way i think off hand maybe 10 main switch on left case was a bit flimsy but what do ya want for £50.. make was BG nexus . anybody fitted one whats bg stuff usually like ? jon:p
  20. brs73

    WYLEX C Curve plug in mcbs??????????????????????????????

    do they exist i'll be a happy chappy if they do. ???????

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