circuits

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  1. J

    Lighting circuits and having multiple legs of of a ceiling rose

    I have two questions regarding lighting circuits. The first in is , is it bad practice to put two lighting circuits on on breaker? The second is similar but can you ‘spur’ of a ceiling rose which is mid run of the circuit as many times as you want considering VD and maximum current draw/Zs...
  2. M

    Can 4 30A circuits run a heater with 2 60A inputs?

    Pictured is the L1/L2 terminal block of a 28kW tankless heater. The heater has 4 30A heating circuits connected to the terminal block, two leads per terminal. The other side of the terminal is supposed to be fed by 2 60A circuits, each powering 2 heater circuits. Is there any concern about...
  3. E

    Low voltage over several circuits?

    I extended a bedroom in my basement and had to move a couple outlets from the knocked down wall to the new wall. After, I was sanding down the drywall mud and forgot to completely shut the door of the main panel (which is in the corner of the room). Soon after, I went upstairs and noticed the...
  4. N

    When working on circuits do you isolate whole board or just the final circuits using MCBs ?

    When working on circuits do you isolate whole board or just the final circuits using MCBs ? Or is there any instances when the whole board has to be isolated even if you are working on few final circuits? Thanks.
  5. D

    Which of my circuits are RCD protected?

    I'm not a spark, this question may be a bit of a giveaway, but wondering which of the circuits on my board are RCD protected based on this pic? Is it just the circuits which the RCD is immediately to the right of? Thanks NOTE: I don't plan on doing any work near this CU, I'm not qualified...
  6. A

    Band 1 & 2 circuits in the same enclosure

    This question relates to 528.1 of the wiring regs (proximity to electrical services). It states that these bands will be kept separate unless one of 6 different methods are adopted. The two exceptions im most interested in are below: 1) Every cable or conductor is insulated for the highest...
  7. S

    UK Second empty meter cabinet for a consumer unit to feed several garden circuits. Can a standard metal csu be fitt

    I have a customer who has installed a second empty meter cabinet for a consumer unit to feed several garden circuits. Can a standard metal csu be fitted in here, does it have to be in an ip65 enclosure also or can a ip65 plastic csu be used. I get csu has to be non combustible within a dwelling...
    • sidekick
    • Thread
    • cabinet circuits consumer consumer unit garden metal meter second standard unit
    • Replies: 2
    • Forum: UK Electrical Forum
  8. G

    Can 2 separate circuits be used on an emergency light,?

    Can 2 separate circuits be used for an emergency light, one for the switch leg and the other for the constant power for the battery, or does it have to be the same circuit?
  9. A

    Testing Emergency lighting circuits

    I have just started installing temporary emergency lights for a fire alarm company i work for i am an electrician qualified to the 18th edition i do not currently do testing and inspection looking at doing this in a few months. Just looking for some advice and information about the testing of...
  10. S

    2 lighting circuits off one PIR Motion Sensor

    So I have the kitchen ceiling lights and worktop lights controlled by separate one way switches. The lights are constantly being left on unnecessarily. Can I get away with one PIR Motion sensor or would I have to have 2?
  11. Dartlec

    Schedule of circuits - Lighting FCU on RFC

    On a couple of recent EICRs I've run into FCUs on a RFC, then 1.5 or 1mm to several lighting points and would be interested how people would note this on the schedule? On the most recent one there are 6 outside lanterns fed from an FCU on the socket circuit, with max R1+R2 outside of 4.5Ohm...
  12. R

    If all circuits are rcd or rcbo protected max current 150mA why do you still have to install 16mm earth

    THIS IS FOR ELECTRICAL NEWS ONLY
  13. C

    Disconnection time extended to 63 amp circuits

    Does anyone know why the 0.8 and 0.4 second disconnection time requirements are now extended from 32 amp circuits to 63 amp receptacle circuits? Is this because the supply sources are getting stronger?
  14. J

    Prospective fault at the end of circuits

    Does anyone perform a prospective short circuit and, where no RCD / RCCBO, a prospective Fault Current test on the end of circuits on inspection and tests? I get we do ZS, but how do we know that the CPC or Line conductors are man enough for fault currents of X duration? S2K2 => I2 T? Cheers...
  15. N

    Bathroom circuits

    Hello: I am a DIYer and have specific question on bathroom circuits. I removed a jacuzzi in master bath which was tied to its own individual 20a GFCI breaker in panel box. Same bathroom has two additional circuits: 1 for lights (including ceiling fan) and one for GFCI outlets. I would like...
  16. M

    Multiple GFCI Outlets Tripping at the same time on different circuits

    Dealing with a noodle scratcher. Trying to figure out what has caused multiple GFCI outlets on separate circuits to trip at the same time. Over the last two Wednesdays in the morning something has happened which caused multiple GFCI outlets throughout the house to trip at the same time...
  17. D

    Circuits for white goods

    Hello everybody! I just wanted to ask, what would be the best practise to run circuits for white goods? In my plan what i see is: 1. Fridge & Freezer 20 amp RCBO radial wired with 2.5mm 2.Washing machine 20 amp MCB Radial 2.5mm 3. dish washer 20 amp mcb radial with 2.5mm 4. Washing machine and...
  18. B

    Time needed to test consumer unit circuits?

    Hello, how much time is needed to test consumer unit circuits before re-connection to the mains? Is each circuit a 5 or 10 minute job?
  19. W

    new circuits onto an AMD3 board with RCBO's - ref 18th ed?

    Hi, I am planning a house extension and will need to add 3 more circuits to my existing board. My current set-up is a metal CU with all circuits on RCBO's. Will I be able to add circuits to this board under 18th Ed or will i need a board swap to make room for all the extra surplus surge...
  20. H

    EICR unsatisfactory due to 'no RCD protection to lighting circuits'

    Hello everyone I have a 1996 2 bedroom house which I'm about to let out as I lost my job due to COVID and need to relocate. The NICEIC electrician I used for my EICR has given me a code C2 for 'no RCD protection to lighting circuits including bathroom lighting'. To put this right, he's...
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