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  1. Lainan01

    Maximum Zs on circuit protected by RCD - 1667?

    Does a RCBO protecting a single circuit mean it can have a maximum Zs of 1667 Ohms since it's being used as fault protection?
  2. K

    RCD protected Cables under Computer Flooring?

    Hi All I’m after some advice, I am doing a restaurant fit out involving a number tables that have hot pots built into the table, for customers to heat/cook their food in the hot broths or stews what have you. These are 3kw and just fed from a fuse spur. The cable run is LSF T&E on tray laid...
  3. Calebp43

    How to test RCD when RCD is RCD protected?

    Got a sub main board with an RCD inside. Need to test that but whenever I test it it sometimes trips the RCD from the main board. I need to test the RCD from the sub main board. Any suggestions? My thoughts are to bypass the RCD at the main side with connector blocks momentarily but surely...
  4. K

    Should these tails be mechanically protected?

    Hi guys. Im moving a consumer unit for my brother and where I was going to run a 25mm armoured through the building he has decided to put a window directly above the cut out. After explaining to him the only way I could do it would be to put a piece of earthed metal trunking on the inside (red...
  5. Pretty Mouth

    RCD tripping, could a surge protected extension lead be responsible?

    I had a fault finding job on Thursday, intermittent RCD tripping. 2 actually, there was a 30mA RCD upstream, and a 30mA RCBO protecting the problem socket circuit, and either one could trip. I had limited time to work on it, but had eliminated everything obvious through testing, and was...
  6. 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...
  7. O

    Recommend a surge protected extension lead

    Need a new surge protected extension, trying to avoid the merde on Amazon, can anyone recommend something decent? Have a belkin but they have used 5 one way clutch screws in the base to thwart repairability so they are off my list sadly...
  8. 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
  9. W

    Why is a too high zs reading on a circuit okay if it’s protected by an Rcd?

    Not long passed my test but was wondering why it’s okay for a circuit to be over the max zs if it’s protected by an RCD?
  10. M

    Exterior RCD protected IP66 double socket

    Hello. I need an outdoor socket and bought a ‘kit’ that allows a ‘soft wire’ IP66 socket. It is connected inside through the wall to an indoor socket by flex and a captive RCD plug. Unfortunately they sent a ‘hardwired’ unit which costs more but leaves no trailing leads inside. So I’d like to...
  11. D

    EICR Certificate not issued. Not all circuits RCD protected rated C2

    Hello, I've recently had an EICR done on my 2 bed house which is a residential let. This house is about 25 years old built by Charles Church. The EICR has not been issued due do C2's, there were no C1's Email with C2s ratings for 1) Not all circuits RCD protected, 2) Bathroom light is a bare...
  12. B

    Can anyone recommend any good UV protected conduit for running network cable externally?

    Can anyone recommend any good UV protected conduit for runnign network cable externally? I plan on running around 10 cables (7mm diameter each) from the loft to the 2nd floor and ground floor, but the cables are orange and i'd like to hide them in some pvc black conduit. A lot of the stuff i've...
    • Beefy
    • Thread
    • anyone cable conduit network protected recommend running
    • Replies: 2
    • Forum: UK Electrical Forum
  13. S

    UK Advice needed for garage power job

    Advice needed! Ive been to see a job for garage power, the previous electrician has taken a 4mm on a 32amp B MCB protected by a 30mA RCD. But hasnt done anything with, apart from the fact there is no protection and its T&E all straight forward. My ownly question is do i gland straight into a...
    • Sparkzilla
    • Thread
    • 30ma advice electrical work electrician garage garage power mcb needed power previous protected rcd taken
    • Replies: 42
    • Forum: UK Electrical Forum
  14. J

    How is an ammeter in a car protected from high amperage during start (especially in cold weather)?

    I’ve been looking at ammeters to install in my car, I see an analog gauge by Bosch that shows -60 to +60 amps which would be great most of the time to show when my car is charging, when it’s fully charged, and how much of a drain is on the battery when the engine (and alternator) is off. But...
  15. T

    UK Bathroom lights not up rated or rcd protected

    Hi everyone just wondering what action everyone would take with this situation. I came to a house to look at a downlight that wasn't working above a bath it was not up rated and the circuit had no rcd protection being on an old wylex board with plug in mcb's. I told them that the fittings were...
  16. kingeri

    Surge protected FCU ...

    So I have been asked to provide surge protection to a group of sockets in a PC area within a house. The sockets (7 doubles) are presently supplied from an FCU off the ring final. An easy solution would be to replace the FCU with one with surge protection built in. Problem is, they don't seem...
  17. B

    Electrician Jobs Radial Adding socket into radial circuit protected by 32amp RCB

    Just after a bit of advice regarding the following. First up I am not electrically qualified and know limits of what I would and would not attempt but am electrically read. The situation is that I have a radial power circuit fed from the consumer board and protected by a 32amp RCB feeding 5...
    • beameup
    • Thread
    • adding circuit protected radial radial circuit rcb socket
    • Replies: 6
    • Forum: Electricians Jobs
  18. S

    When testing a circuit protected by RCBO, do you test at the DB or furtherst point

    Hi, I just have a few questions in regards to testing an RCBO circuit Is there a requirement to test at either the furthest point or the DB or is it down to the testers discretion. Do the test results differ? What tests on a circuit will trip the RCBO when you are away from the DB. Is it...
  19. spud1

    What if a circuits Max Zs is exceeded but the circuit is protected by an RCD?

    Just processing an EICR and noticed a couple of final circuits measured Zs values (fed from a sub distribution board) slightly exceed the Max permitted Zs values for the OCPDs that protect them. Obviously I will note this as a design flaw in the observations, but I just wondered, from the...
  20. Flanders

    63 amp 3 phase socket protected by a 30 amp fuse RCD?

    Carrying out and EICR on large factory and they have welding plug into 63 amp commando sockets but are protected by 30 amp BS 88 fuses. Now the regs states Socket outlets with a ratted current not exceeding 32 amp need RCD protection. 411.3.3 (i) Because the Socket it 63 amp I say it does...

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