trip

  1. Q

    Transformer causing mcbs to trip

    Hi. Could someone confirm weather you think I'm right or not. Today I installed a ceiling mounted suspension wire lighting track in a domestic kitchen. It's fed via a fairly chunky wire wound transformer (I don't know the kva of hand). The mcb supplying the circuit is a type b 6 amp rcbo...
  2. R

    Can 2 way radio trip RCBO'S

    Good evening, Does anyone have any experience of RCBO's tripping when using 2 way radio near the DB.
    • robo1811
    • Thread
    • 2 way every interference radio rcbo rcbo's sockets someone trip
    • Replies: 33
    • Forum: UK Electrical Forum
  3. A

    0 Megohms N-E and no RCD Trip

    Hi All I was re-testing a brand new install for QC purposes todayand the N-E on the IR was 0 Megohms, am I right in expected the RCD to trip. Itwas a TN-C-S system so wondered if the shared neutral and earth may have aneffect? The IR for L-N and L-E belled out perfectly, I haddisconnected both...
    • AndyTheSpark
    • Thread
    • calibri rcd roman times trip
    • Replies: 15
    • Forum: UK Electrical Forum
  4. J

    10 second trip

    Tested some out side lights today and it triped after 10 seconds. With all loads disconnected. Don't understand why it would trip after 10 seconds. Had a slight short on the cable of 95k ohms Any ideas
  5. A

    Heating element earth trip

    Hi, Can a heating elements resistance to earth depend on its temperature? As I have one here that trips the RCD but when checking the resistance cold there is around 1.5M ohm-7M ohm to earth which shouldn't trip a 30mA RCD. Putting pressure on the element doesn't change it and there aren't...
  6. K

    Cylinder stat seems trip rcd

    Hi, My heating system is a myson apollo 30b with a 3 way valve etc. The other day wife said was a popping noise coming from kitchen where the programmer and boiler is , on investigation i have found when you turn down the tank stat which is a drayton hts 3 it when it gets below the temp and...
    • klunk1971
    • Thread
    • boiler cylinder heating rcd seems sometimes trip valve
    • Replies: 2
    • Forum: Central Heating Systems
  7. J

    test & inspect tripping when doing zs on not trip

    Hey all, I'm playing with my new Metrel mi3000 and using my parents house as a quinea pig. So if you see in the pic it has the main/rcd switch as a cutout and when trying to measure the zs my little Metrel trips it every time (tried on non trip and normal). I have my R1+R2 and ze so can...
    • junior-sparky
    • Thread
    • doing inspect test trip tripping
    • Replies: 15
    • Forum: UK Electrical Forum
  8. S

    Motor trip

    Handed a job this morning; 30kw motor. 55A. Circulation fan on 220°C toaster. Star-Delta setup with thermal overload in at Line contactor. Overload at 40A. D80 mcb tripped. Motor tested and found with negligible IR. Bearings 'lumpy' but felt a lot worse. So... overload should have been set...
  9. S

    RCD trip out

    I've been called to a job for a friend as his swimming pool pump keep tripping the RCD, it took me a while to work out how the other electrician had wired it but of what I see, it's a bit of a mess. I'll do my best to explain for the pool I can see 3 MCB's used 1st is a 6A type b in to a time...
    • Simon Hall
    • Thread
    • contactor course out rcd swimming trip trips while
    • Replies: 54
    • Forum: UK Electrical Forum
  10. J

    RCD trip after board upgrade. Frustration who on my side? Who's on landlords? A rant!

    My mrs recently new bezzy girl mates partner has some property, my mrs said, " my hubby do it for ya at a good rate " joy i think. I had this gut feeling, you know the one! My mrs and her mate have been looking to get us two men friends, there was even talks of going camping, err don't think...
  11. N

    Why do lamps blowing trip RCDs?

    ...cos if the lamp is in effect Class II with connections only to L and N (Edison screw; standard bayonet cap in unearthed pendant or batten), you would naively think there is no way the L and N can be in imbalance. But still the RCD trips. Definitely talking RCD trips here not MCB. I've seen...
    • NickD
    • Thread
    • blowing lamp lamps lighting lights rcd rcds trip
    • Replies: 27
    • Forum: UK Electrical Forum
  12. S

    rcd trip y

    hi i was on a fuse board change to day and the new fuse board was switch off and no buzz bar connected and no tails connected but 1 of the circuits which was a radial to the kitchen when you put the neutral in it tripped the rcd can any 1 tell me why :lightbulb:
  13. A

    30ma trip on split board

    Any opinions on replacing a 100a main switch with 30 ma TVs, I'll have to move the internal tails from the bottom off the rcd to the top I know but is there anything to say I can't? Or just use rcbos
    • andrewni
    • Thread
    • 30ma board can't confused other please split switch trip
    • Replies: 9
    • Forum: UK Electrical Forum
  14. G

    RCD both tripping and refusing to trip!?

    I have been away from a refurb job while other (inc. the owner) have been in and on my return I found that the RCD (for a cooker circuit and three power circuits) is tripping. It triped even when a fairly basic piece of equipment such as my makita drill charger of the owners kettle was plugged...
    • Greg:
    • Thread
    • circuits other rcd three trip tripping while
    • Replies: 24
    • Forum: UK Electrical Forum
  15. H

    Trip readings too high on ground fault relay with Toroid sensor......Help?

    Hi there, Have been carrying out testing on some 3 phase sub-DB's that have outgoing supplies to 3-phase DB's for accommodation blocks. My problem is to do with readings I'm getting on a ground fault relay which has been set to 300mA. Basically, the incoming cable to the Sub DB ( 4-core 25mm...
  16. S

    Fluorescent fault overcurrent trip?

    4ft old style starter/ballast type fitting which when powered does nothing at all (not a flicker) but trips the 6A/30mA RCBO after maybe 3-5 secs. I didnt have my clamp meter with me when i went to see the fault but assume due to the time delay that its the overcurrent part of the RCBO rather...
    • SpannerSpark
    • Thread
    • ballast delay fault fitting fluorescent overcurrent short starter trip
    • Replies: 9
    • Forum: UK Electrical Forum
  17. B

    one side of the 13a double socket is giving me a trip reading for zs

    hi im doing second fix on one of the re-wire house, down ring and today i was doing my zs test i tested all sockets but one side of the twin double socket is reading trip then the other side of the same socket is fine,im useing megger mft 1553(no trip) setting.pls help
  18. A

    RCD Trip on isolated circuit

    Hi, I am fairly new to this having only just completed and passing my Part P qualification so please bear with me. I decided to tidy up some wiring carried out in my house by a "professional" bathroom installer. The circuit in question is a 16amp radial with only one outlet supplying an...
    • Alan Shaw
    • Thread
    • circuit isolated rcd trip
    • Replies: 25
    • Forum: UK Electrical Forum
  19. Midwest

    RCBO X5 trip time out, caused by washing machine

    I've used a particular socket in my kitchen to carry out monthly calibration checks (ZS & RCD) on my MFT, for several months with no issues. Last week I carried out my tests on my MFT and the x5 RCD test timed out at 40ms. Thinking I had a faulty RCBO, I replaced today, but the fault remained...
  20. UKMeterman

    Over / under voltage trip panel builder required

    Hi, I am looking for suggestions for a panel builder particularly round the Bristol area who could build up an over / under voltage protection unit using a suitable protection relay, contactor and so on and also be able to design the enclosure. Thanks James
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