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rcbos

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  1. G

    Type of rcd

    Anybody know what Rcd this is. Previous report suggests 61009, I'm thinking more 4293? Nothing on the rcd itself
  2. B

    retro fit rcbo's

    Had some rcbo's to retrofit to some dorman smith 3 phase db's earlier and it occurred to me as I was fighting past the other cables in the 72 way board that they are actually a nightmare to fit in a busy as heck board. Why they so bloody long?!?!
  3. B

    Steeple RCBO

    I wanted to add a couple of sockets by the windows of a small clothes shop. The easiest way, I thought, was to create a new, radial circuit. The C.U. is a Steeple and there are two spare ways into the board. The existing circuits are protected by RCBOs so I bought a new one from Denmans. When I...
  4. A

    Problems With Niglon RCBOs: Anyone Else?

    I had five out of eight Niglon RCBOs fail to respond to the test button today/yesterday . Three 6A, and two 16A . One of the 16A 'blew' / 'exploded inside', after pressing the button a few times. Wasted half a day because of it :banghead: Anyone else? I'm just wondering if there's a wider...
  5. D

    Trying to find Legrand RCBOs

    Does anyone know of anywhere stocking Legrand RCBOs please? I'm after a 6A and a 20A for a job and cant seem to find them anywhere. I'm in South Wales but would be happy to buy from reputable on-line etc if necessary. Obviously I've tried all my local suppliers and even Screwfix dont have...
  6. A

    Niglon RCBOs Problems Anyone?

    I had five out of eight Niglon RCBOs fail to respond to the test button today. Three 6A, and two 16A . One of the 16A 'blew' / 'exploded inside', after pressing the button a few times. Wasted half a day because of it :banghead: Anyone else? I'm just wondering if there's a wider issue here. (It...
  7. Gazthesparky

    Global Insulation resistance testing

    I was doing a fuse board update the other day and normally I use duel RCD boards with mcb s but instead I used separate Rcbos due to the customer specifying these. I prefer fitting Rcbos due to just that one circuit is disrupted when there is a fault. when quoting for the job I carry out a...
  8. S

    main isolator switch

    Gents, Looking at an install which will include two new circuits, one for lights and another for a ring main. There is no space on existing 16th edition board and customer does not want a new 17th edition board, there is no double pole isolator before it.I am planning on Henley blocking the...
  9. G

    brand new rcbos

    got some brand new rcbos that im looking to sell if anyone is interested 2 x crabtree starbreaker 61/c14030 40A 1 x mem eaton emch120r30c 20A 5 x dorman smith kr1pc3230 32A 1 x dorman smith kr1pc1030 10A all new and boxed open to sensible offers cheers
  10. cliffed

    rcbos

    like your opinions on this ,jus finished a school extension ,everything fine except a couple of loop impedances readings on lighting circuit.These exceeded the appropriate limits,in the regs.All are protected by rcbo"s 10 amp c type,the electrical engineer wants it corrected to comply to regs.We...
  11. P

    Question on Faults regarding RCBOs (Trainee)

    I've got a test and one of the key questions on it is as follows; 230v Single Phase Circuit is protected by a circuit breaker with integral RCD(RCBO), Justify which competent part of the device would operate for each of the following faults: A) Line to Earth Fault of approx. 2.3 Ω B) Line to...
  12. C

    No rcd or rcbos on domestic installation

    Doing eicr on a domestic installation Every thing is looking and testing fine on lacking rcd on circuits not even on power should it be a c3..not to 17th And therefore satisfactory or c1 c2 and unsatisfactory the installation is about 20 years etc
  13. E

    Mk sentry rcbos

    for sale i have x4 6a mk sentry rcbo's. theyre all brand new, one of the boxes got ruined so theres only 3 boxes but they are brand new. £20 each. thanks!
  14. B

    RCBO's on TT system

    Excuse my ignorance,can someone explain to me the problems of using RCBO's on a TT system,and whether and why its unsafe
  15. B

    max zs with rcbos and rcd spurs

    Hi Everyone I was just wondering if anyone knew more about maximum zs readingsa for rcbos if say you have 1. a type C 16AMP bs 61009 rcbo 30ma is the maximum zs 0.92ohm OR IS IT 1667ohm 2. if the circuit came straight from db ran to an rcd spur 30ma protected by a bs 60898 B 16 amp mcb which...
  16. D

    Best make of RCBOs?

    Hi, Looking to source some RCBOs in UK as part of a re-wire here in Gran Canaria (will be done by a retired UK electrician). Looking for good price and performance (happy to pay more for better quality - but not just for a name). Can you experts recommend makes and suitable suppliers. Thanks.
  17. A

    IR Testing RCBOs

    Hi all, got c.u full of rcbos for my upcoming assessment in Jan. My question is can I remove the cables from from the terminations of the rcbo to test for Ir and still keep the assessor happy? The reason I'm asking is because: 1) the probe from my fluke won't reach far enough into the...
  18. M

    Board change and storage heaters

    I dont usually do board changes on old properties unless its a full rewire, However my neighbour wants an upgrade to a 17th edition board, and it would be really handy as a part P reasessment job. The thing is he has night storage heaters on economy 7 which are fed from their own CCU which...
  19. K

    RCBO’s ? ? ? ?

    Time for one of Tony’s hypothetical questions again. But first I need something confirmed. Are RCBO’s SP or DP? I say it’s hypothetical, my recommendation to a friend regarding a new build he’s having done will be influenced by your first answers.
  20. T

    rcbos tripping out for no apparent reason

    i installed a new db into a office 2 weeks ago ,there is a total of 4 circuits , 32a ring main ,16a radial, 6a lights x2 everthing came on allright and i just had time to do zs test on circuits and rcd test both tests where satisfactory ,not enough time to to do ins/res owing the urgency of...

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