trips

  1. Goody

    Help! Cooker trips RCD.

    Hi, An electrical cooker stays on for a while and trips the RCD. When the RCD switched back on straight away, the cooker stays on for a length of time and trips again (doesn't trip straight away). The circuit tests OK and the MCB stays on all the time. What could be issue and where...
  2. T

    Nuissance tripping on a 30mA Main RCD on a TT system

    Hi all, hoping some 1 out there can help me on the following problem. just recently qualified and have this nightmare situation with no experience on the following problem. I have nuissance tripping on a 30mA RCD. it trips at random times and can go as long as 5 days before it goes again. the...
  3. T

    RCD tripping

    Help Please!! Had an issue today where a external DBs RCD in a garden shed / workshop keeps tripping. It only trips when high wattage items are used, otherwise its fine. The installation has been active and fine for the past 7 years. I have tested all circuit, all sockets / points but can...
  4. N

    RCD trips on kitchen ring main when supply is turned on ???

    Hi guys,,, I was installing a new socket today for a client in her bedroom when halfway through working she asks if she could turn the power on and make an important phone call. So I turn the supply back on after i put everything back in place and then all of a sudden the rcd trips and wont...
  5. L

    RCBO True operating current 30mA????

    Called to investigate a fault in a building which has lighting on TYPE B RCBO's, ive stripped everything and all the wiring is good >800Meg everywhere as its less than a year old, the switchgear is Eaton Mem and the accessories are the cheapest nastiest youve seen, the main lights are twin 9w...
  6. W

    what ohms trips rcbo's

    ball park figure: The actual number is beyond my limited old brain Insulation res. test n&e would trip (set 500v) rsbo/rcd What is the threshold / trip ...not trip, ohms reading on tester I guess some manufacturers may differ slightly, but there must be an inbetweeny? In the old days, n&e...
  7. G

    new washing machine trips 3 phase rcd incomer

    Hi Chaps, Got called to an interesting one today, customer has bought a new miele washing machine for a farm building. It is a straight swap for an older machine, trouble is during its cycle it trips the 3 phase rcd 30ma incomer. The socket it is connected to is fed from a single phase breaker...
  8. T

    breaking light bulb trips other circuits

    hi all, any idea why a breaking light bulb would trip other circuits mcbs? system is TT, entire installation in an mk cu under one 80A 30ma RCD bonding etc is correct and connected, pfc, psc etc all ok. everything looks normal except: all the circuits which tripped at the same time as the light...
  9. S

    RCD minimum times...

    Hi, I'm investigating an intermittent problem in a flat. Every once in a while the RCD trips. The tenants have narrowed it down to one circuit, the electric hob. However, it never trips whilst I'm there, even after pouring water on the hob. I've carried out 500v insulation resistance tests, and...
  10. B

    RDC trips on pump/motor circuits.

    :banghead: Three separate circuits: 1. Pool pump. 2. Cold water tank pressure pump. 3. Jacuzzi pump. Front end: All three circuit above are protected by a single 40A RCD 30mA. Individual circuit MCB's provide over current protection. These are rated for the job i.e. 6, 6, 16 amp. All pump...
  11. W

    RCD wont stay in.

    Can anybody tell me if I'am doing anything wrong. I have a Metrel 3100 multifunction tester. Im trying to do a ze on a tt system. There is 2 boards, 1 2-way and 1 8-way. Both protected by a 30ma rcd. Used as main switch for both boards. I have isolated both boards and removed the main earth...
  12. T

    Any ideas why my electricity trips out???

    Hi guys,the last 3 nights my electricity has tripped out at roughly the same time everynight about 12.30. Now nothing new is switched on and in fact it comes at a time when we are using the least amount of electricity. Any ideas what could be causing this to happen? Thanks
  13. 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...
  14. steamboatwilly

    Zs trips RCD, RCD trips on 1/2

    Folks, Moved a cooker outlet on a job last week but when testing the socket on the cooker switch the Zs trips the RCD. Tested the RCD and it trips on 1/2.....0 and 180. Zs on a RFC socket also tripped the RCD. Customer says that the RCDs trip quite frequently. There's a second CU....tried...
  15. C

    RCD (sometimes) trips on switching OFF an ELO

    I recently replaced an old electric cooker with an up-market multi-function ELO and ceramic hob that I had kept in storage for 4 years - a simple swap at the cooker switch. The Wylex domestic CU was put in 4 years ago and incorporates a WRS 80/2 30mA RCD and has never given any problem. There is...
  16. F

    Rcd tripping

    Hi all, Got a tt system and rcd trips when all circuits are on after a couple of minuites. Only trips when the garage mcb is on with this isolated all other circuits seem ok but turn on garage and 5 minuites later rcd (which is main switch) trips and wont reset without turning all circuits off...
  17. K

    main RCD trips before RCD 30ma spur

    just moved in to a new house fed from 20 amp, Got a 2.5 going to a RCD spur then a 1.5 out of that to a pull cord, then another 1.5 out of that to the shower. pull cord could be on its way out, does seem to trip when switching, not when in use. doesn't trip all the time its nuisance tripping...
  18. M

    rcd not tripping

    looking for a fault on a caravan where the rcd trips when a main earth is added. with no main earth the rcd want trip. the caravan has only got an earth path via bonding from the earth rod to the db and no main earth from the earth rod to the db. zs is 66.4 on sockets 67 on lights and 66 on...

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