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functional

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  1. R

    Functional Earthing conductor

    A question in the Electacourse home study 2382 is The colour of the functional earthing conductor is :- I answerd green /yellow .which occording to is Wrong ,they say Yellow, i have never heard of a colour for a earthing conductor, ? who is right
  2. S

    RCBO Questions

    Loving these things. Can the functional earth cable conductor be trimmed down to make it more tidy? Do you put earth sleeving over the white functional earth conductor? Do you put the functional earth in the earth block on the same way as the circuit CPC or do you group all functional earths...
  3. ackbarthestar

    Functional switching

    Good Morning all and sundry..... I'm putting together an advanced sample sheet for some apprentices a selection of methods to switch various loads. I've got 5 obvious methods of multiway light switching, Overrides for PIR, contactor switching both lights and motors, wireless switching (that's...
  4. A

    Functional Earth on RCD

    Hi Reference Dead tests in 2392-10.In any of dead tests does functional earth lead on RCD. have to be disconnected as per RCBO,s?? I have surface mounted PVC light switches on upstairs circuit with open ended CPC,.s.Will this affect R1+R2 readings?? As they are a little high...
  5. Mark42

    What is an RCBO's Functional Earth connection really for?

    Can anyone direct me to a citeable link which explains in detail how an RCBO works, and in particular what the functional earth connection is for please? I was told today by a professional, highly experienced electrical engineering lecturer that it’s only for spike suppression, or bleeding off...
  6. H

    Functional earth ( clean earth )

    Ok, good afternoon all, this is my first post on here so please all be gentle, My question is this, my boss at work has read the spec and confirmed the computer ring mains require a 'clean earth', we shall be wiring in 4.0mm single for all conductors and then 2.5mm single for the extra cpc...
  7. B

    RCBOs with 1 flying wire.

    Do RCBOs normally have 2 flying leads - neutral and earth? Are there "old" rcbos and new types. The reason I ask is that I have bought Proteus RCBOs and they have a flying neutral wire only. I've never fitted RCBOs before and am just a bit confused. Any explanations appreciated. Bul
  8. T

    Sma 17000tl multi functional relay

    Hi, Im Currently installing my first g59 install. I am using Sma 17000tl inverters and was wondering if anyone knows anything about the multifunctional relay. I understand under g59 you need a g59 relay and was wondering when you set the parameters on the inverter whether this is suffice or do...
  9. T

    functional testing on rccb

    Hi all replaced a faulty 3 phase rccb yesterday (main switch) with exactly the same control gear one. Testing on x1 and x5 were absolutely fine but it didn't work with the test button. I swapped it for another one assuming it was faulty but did exactly the same, baffled me! any ideas?! By the...
  10. La Poste

    Functional testing of MCB's??

    It might sound a bit daft but is there any way of functionally testing MCB's? It's easy to confirm whether an RCD is functioning correctly but is there any way of testing an MCB? I've just been reading about counterfeit goods and how some MCB's are manufactured with absolutely no working parts...
  11. S

    megger 1553 multi functional tester

    Hi guys, We were testing an install the other day with a new meter megger 1553. Ze is a LIM as we cannot disconnect earthing Could not test IR on this circuit due to electronics connected. Did long lead R2 but it's all conduit with no separate CPC and no fly leads at accessories but has...
  12. R

    Functional earth on RCD

    Bought a MEM a100he,I bought it as an RCD but it has a functional earth...... is this some kind of RCBO, or do some RCDs have an FE? Never seen one on an RCD before.
  13. Mark42

    Connecting/commoning RCBO Functional Earths. What do you do?

    What do you do with those untidy functional earth wires, especially if you have a lot of RCBOs in one board? I suppose one is supposed to take each lead to the same terminal as the circuit’s CPC. But that can mean trying to reliably fit a skinny bit of stranded flex behind maybe a 6mm earth...
  14. S

    Rcbo

    Quick question guys, something I've never really looked into.... Why does an RCBO have a functional earth but an MCB and an RCD don't since an RCBO is a combined RCD and MCB??
  15. S

    Presence of earthing arrangements for combined protective and functional purposes.

    Could someone give me an example of: Presence of earthing arrangements for combined protective and functional purposes. Im a bit confused! Thanks
  16. spamwize2

    schedule of inspections poser!

    on completing the schedule of inspection checklist, what does "presence of earthing arrangements for combined protective and functional purposes." mean? to tick or not to tick? someone from IEE said NA my boss said tick but i would like to know what i'm ticking or not!!

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