mcbs

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  1. R

    RCBOs vs RCDs with MCBs

    In a domestic set up ie average (if there is one) house is there any reason you wouldn't use a RCBO but a MCB and a RCD? I can't think one Fred
  2. T

    20 amp mcbs on 2.5 radials

    Done a eicr on a tt no rcd protection and ze of 268 ohms. 3 Radials in 2.5mm going to 32 amp mcb. Just been plastered throughout and some type of rewire i think, the house is going through a sale and was requested by buyers solicitor. I was going to replace cu and put sockets on three...
  3. B

    Three phase motor mcbs and rating

    Hi all a bit confused and need some advice on what size of mcbs I require for wiring a three phase motor just wanted to get some some info on it. So if I have a three phase induction motor with full load current at say 30amps on the nameplate at voltage 415volts. What size of breaker will I...
  4. G

    Dp mcbs 110v

    Using a single phase db, how do you install double pole mcbs into this to use as a 110v db? Does the busbar need altering? As how do you get the neutral side onto them?
    • graham123
    • Thread
    • 110v electrician mcbs neutral single supply
    • Replies: 9
    • Forum: UK Electrical Forum
  5. G

    For Sale MCBS Hager British General Protek 75p each

    Been having a sort out and have the following MCBS to clear British General All new 6 32A type B 1 40A Type B Hager old style without the plastic flap Used 6 32A Type B Protek Look New 2 32A Type B 2 6A type B All 75p each plus postage
  6. D

    Lg mcbs

    Hi, Just wondering has anyone used LG circuit breakers? Local place has them for sale and I was wondering if they were any good. Cheers.
  7. D

    Does anybody know ERCO Weber MCBs?

    Does anybody know anything about ERCO weber Circuit Breakers?
  8. D

    Siemens, MK and Dorman smith MCBs for sale

    i have 1000's of MCBs for sale all brand new and boxed MCG Triple Pole 6 - 63 Amp and single Pole 6 - 32 Amp Type B and C - £3 Each Dorman Smith Loadcentre Type B and C 6, 10 and 25 Amp - £4 Each Siemens 5SQ Type B 10, 16 and 25 Amp - £4 Each MK Sentry 5910s Type B 10 Amp - £3 Each Only...
  9. G

    Stablock federal types mcbs

    I always thought the stablock range green was type2 orange type 3 and black type 4. But these black ones have no info on the sides whatsoever. Anybody know if these are a type 4?
  10. A

    BS 3871 MCBs

    So I've come across an old MEM Memshield 1 DB which uses the older BS 3871 MCBs. I am adding a new circuit. Can you still get BS 3871 or can the BS 60898 and BS 61009 rcbo's fit in the aforementioned DB. Its a 24 way board with only 6 ways currently used. I don't really want to turn round to...
  11. D

    Sanity check - replacing MCBs with RCBOs

    Hi All Wanted to get feedback on this idea. I have 3 fuse boards which trip frequently whenever there is a lightening storm nearby. My electrician friend has suggested he swaps all the MCB's with RCBO's so that individual circuits trip rather than the whole board. Each board currently has a...
    • drjarmin
    • Thread
    • check electrician mcbs rcbo rcbos replacing times
    • Replies: 47
    • Forum: UK Electrical Forum
  12. M

    Insualtuion Resistance - individual circuits V bank of MCBs & RCD readings

    Tested each of 9 new circuits in usual way of L.O.C. and IR, all in theory ok ... CCU is a Hagar split-load dual RCD. 1-4 on RCD1 / 5 - 9 on RCD2 Aware that no requirement for "collective" IR on EIC, just individual circuits. When tested from the outgoing L of the RCD2 to MCB busbar (all...
  13. N

    Customer tonight wants me to replace rewire able fuses with plug in MCBS.

    Been to a job where a young couple want to replace their white sockets and light switches with chrome finished. I took a look at their CU and it is a wylex re-wireable fused board with separate RCD covering all circuits. It then became clear they had no idea what a rewardable fuse actually...
    • nisioptimum
    • Thread
    • customer fuse fuses mcbs plug replace rewire wants
    • Replies: 22
    • Forum: UK Electrical Forum
  14. C

    schneider mcbs

    just going through toolstation catalogue to order schneider cu and mcbs, and noticed they now have an "easy9" range.does anybody know if these are different to standard Schneider mcbs or just rebranded, don't want to have any compatability issues in future
  15. J

    Light fittings and type D mcbs

    Hi all. I'm facing a little problem. We have fitted some light fittings that prefer type D mcbs (manufacturer said type c probably ok, but they are tripping). Unfortunately Hager do not make a type D breaker for my 17th ed CU. any ideas how to overcome the issue? thanks
    • jjnr78
    • Thread
    • fittings light light fittings mcbs type
    • Replies: 14
    • Forum: UK Electrical Forum
  16. SJD

    Testing MCBs

    Much though I don't like it, once in a while I use a second hand MCB - for one that has long since gone obsolete and new ones are unavailable. What about testing used MCBs before reusing them, does anyone actually do this? I just tested a 5A MCB at a couple of values of loading, it seemed to...
  17. S

    RCBO for Crabtree SB6000 board - which has type 1 crabtree mcbs - help.

    hi, i have been told that we need a 32a or 40a RCBOfor a Crabtree SB6000. I am struggling to find these anywhere. I wondered if anybody has experience of this board and any make of RCBO that would fit? Many thanks for your help. Suzanne
    • Suzanne Fowler
    • Thread
    • board crabtree mcbs rcbo type
    • Replies: 4
    • Forum: UK Electrical Forum
  18. B

    DORMAN SMITH BS 3871 mcbs

    Hi all, I was just wondering if anyone knew if any of the new dorman smith mcbs or any other suitable conversion was available for old bs 3871 M9 Dorman smith loadmaster mcbs are currently available please?
  19. V

    Mem mcbs

    Don't like these old things very temperamental
  20. telectrix

    KQ MCBs wanted.

    help, folks. need 2 16A C type KQ MCBs urgently. anyone got a couple? not necessarily brand new. thanks, Tel.

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