rcds

  1. B

    Insultion reistance testing on CUs with RCDs

    Hi All. New to the forum and this is my first post. Insulation resistance test on CUs with RCDs. Do the test at 250V initially to check anything connected, then disconnecting/bypassing any current/voltage using equipment on the circuits. When testing each circuit separately, disconnecting...
  2. P

    RCDs and "Inverter" washing machines

    Anyone got any idea why [LG] washing machines with "Inverter technology" continually trip RCD's? LG insist that the fault is not theirs and that the machine I know of should be connected to a non-RCD supply to remedy the problem. Given that most machines are in kitchens, ergo Special Locations...
    • Poptasticdave
    • Thread
    • circuit don't electricians' talk inverter machine machines other rcd rcds washer washing
    • Replies: 14
    • Forum: UK Electrical Forum
  3. Richard Burns

    4 30mA RCDs in series!

    I have just fixed a fault today on a 2 year old install where there was a 30mA RCD from the tails feeding to a remote twin 30mA RCD board feeding a 30mA RCD garage board in an outside office feeding another 30mA RCD garage board in another shed! Discrimination whats that? I did not test the...
  4. N

    Earthing and RCDs in two wire system countries.

    Hi all. I hope it's not rude to post a question straight away ? I've been living in Cambodia now for several years. There's recently been a lot of guys from the U.K coming over and setting up home. The electrics here are sketchy but functional. Polarity is hit and miss, no earthing and...
    • nannoo
    • Thread
    • countries earthing electricians' talk neutral rcd rcds supply system wire
    • Replies: 13
    • Forum: UK Electrical Forum
  5. F

    time delay rcds

    were would you use a time delay rcd and what are the benefits of doing so is it just in tt installations
    • Farmelectrics
    • Thread
    • circuits delay discrimination electricians' talk other protection rcd rcd's rcds time time delay
    • Replies: 34
    • Forum: UK Electrical Forum
  6. W

    Two parallel RCDs flick off at the same time - earth capacitance - any pointers?

    I need to rectify a fault where an outside SPA hot tub is supplied through a length of 3 or 4 meters of buried armoured (shielded) cable and – when the MCB is closed – after 10 seconds the 30mA type A RCD above this MCB opens – and so does another in parallel with this on a separate UK style CU...
    • WilcoxElec
    • Thread
    • earth electricians' talk not uk off parallel rcd rcds time
    • Replies: 15
    • Forum: UK Electrical Forum
  7. C

    rcds rcbos in 3 phase boards

    i have been asked to fit three phase board in a block of flats and the drawings state they want mcbs but i will have to rcd protect the circuits. is it just a case of using rcbos throughout cos this will be very costly and also i would want three circuits to trip together but i cant find three...
    • chris-
    • Thread
    • 3 phase boards electricians' talk phase rcbo rcbos rcd rcds
    • Replies: 13
    • Forum: UK Electrical Forum
  8. S

    Change in the Law regarding RCDs in Rental Properties

    I have been in contact with my local AM about the need for a legal requirement for all rental properties to contain RCDs to protect against electric shock, she fully agrees with myself that this is a requirement which needs to be brought inline with the requirements that are imposed with Gas...
    • Spazz
    • Thread
    • change electricians' talk properties rcd rcds regarding rental review safety these
    • Replies: 179
    • Forum: UK Electrical Forum
  9. P

    Who trusts RCDs?

    Hi Guys Did a small job in a house - one additional socket. Then did an RCD test - x1 (240 mSec) and x5 failed miserably. did the test a couple more times. Some improvement but still failed. The RCD is an old Wylex WSES 80/2 so replacement means a new CU. Customer asked me to test it again - it...
    • Piratepete
    • Thread
    • button electricians' talk failed first rcd rcds tested times
    • Replies: 63
    • Forum: UK Electrical Forum
  10. sythai

    Dont you just love RCDs !!

    I'm after a crabtree starbreaker D6 MCB.... any ideas please ? Tried a few wholesalers that I use with no joy Cheers Sy Not sure whats going on with the title of my post - "Dont you just love RCDs!!" (was a previous posts title) Should read "Crabtree Starbreaker MCB"
  11. T

    RCDs or Not ?

    Greetings All , my first post ! I am not a Sparks but would really appreciate the wisdom of your Forum members. I work in a modern University . Built about 5/6 years ago . Some of the Laboratory and Studio power circuits have had major modifications in the past two years i.e. post 2009 . (...
  12. W

    RCDs tripping

    hey, i was rung today by my dad to come and look at a glasswasher that is causing the main RCD incomer to trip every time it trys to cycle. This glasswasher is in a pub, over the last 2 days the landlady said every time she tried to cycle the dishwasher it tripped all her pumps out. The glass...
    • wrighty
    • Thread
    • aus electricians' talk neutral rcd rcds shower tomorrow tripping
    • Replies: 17
    • Forum: Australia
  13. S

    RCDs in Rental Properties

    One of my regular Customers: a landlord, has had a letter today from his LA, stating that he must have RCDs in all his Rental houses. Very limited information received, but I am waiting for a copy of said letter. What I am wondering is is there a legal requirement to have RCDs installed into...
    • Spazz
    • Thread
    • aus electricians' talk housing installations properties property rcd rcds rental their
    • Replies: 9
    • Forum: Australia
  14. K

    3 63 amp RCDs on same circiut

    2 are in the board and the other is feeding that which is also being fed from a 100 amp rcd. cant seem to find any problems with cables and does just nuisance trip. help plz
  15. Mark42

    2 x Main 2P RCDs in Split-phase DB: Weird tripping behaviour.

    Two phases supplying two 2-pole RCDs in a consumer unit reconfigured as a small DB (with an external 3-pole main switch). Common Neutral. In an outbuilding supplied by 10mm 4-core. TN-C-S ‘exported’ from main house by 10mm bonding. Local TT as an option in progress, awaiting tests before...
  16. E

    RCDs and Industry

    I understand that in an industrial setting if cables are surface mounted , SWA or in conduit then no RCD needed. If sockets are controlled by an on site electrician the no RCD. What happens if there are toilets on site with shower cubicles do all circuits, lighting , handriers etc have to be...
  17. E

    testing 4 RCDs, lets see the result

    Today i took some rcd tripping tests. Two of RCDs are already in use for many years, other two are new! At first i took a test on a ABB 40A/0,03mA about 8-10 years old. It did not pass it anyway. Tripping Ampers was out of limit, i assume about 40mA. Next test was about an old RCD (F-G permat)...
    • electricalchief
    • Thread
    • aus electricians' talk rcd rcds result testing
    • Replies: 3
    • Forum: Australia
  18. SolarCity

    ADS and RCDs on PV installations

    Okay, I know this has been discussed extensively elsewhere but I think this deserves another thread. Seeing as we have generally come to a consensus that RCDs intended to provide ADS may still be being supplied from the LOAD side by the inverter, perhaps as much as 5s after the RCD has...
  19. 1capybara

    where RCDs are required, section 411.3.3

    Section 411.3.3 says: " In a,c. systems, additional protection by means of an RCD in accordance with Regulation 415.1 shall be provided for: (i) socket-outlets with a rated current not exceeding 20 A that are tor use by ordinary persons and are intended for general use, and (ii) mobile equipment...
  20. P

    DISCRIMINATION BETWEEN RCDs

    Morning Guys I know that if a 100mA RCD is followed by a 30mA RCD, the 100mA needs to be S type. If a 300mA RCD is followed by a 30mA RCD (Farm installation) does the 300mA need to be S Type? Cheers Pete
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