rcd

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  1. E

    Three phase rcd protection

    Hi guys, I am rewiring a commercial launderette with 3 phase machinery. Does the machinery need to be RCD protected being in commando sockets. The sockets are not accessible to the public and each circuit is being used for a specific machine. With the price of three phase rcbos the...
  2. T

    Up front RCD tripping with sub main connected.

    Hello all I have recently installed a sub main in 4mm 3-core SWA, approx length 45 metres, to feed a small garden office. Final circuits in the cabin are protected by 30mA RCBOs and the supply is fed from a 32A MCB on the non-RCD side of the DB in the house. As the installation is TT I put in...
  3. D

    UK No rcd on lights and cooker

    Can anyone help me with this I have a old plastic consumer unit with one rcd with lighting and cooker not on rcd The original lighting circuit has been altered over the years and 16 non fire rated spotlights put in the kitchen with all earths cut out 2 bathrooms 5 spotlights in each not iP...
  4. I

    Three phase equipment RCD protection on a TT system

    TT system, existing three phase fuse board recently installed by another spark which only has single phase circuits terminated into individual RCBOs Required to install three phase circuits for new equipment, is there a better way of doing this than fitting a 4pole RCD ahead of the main switch...
  5. D

    RCD polarity testing

    Hi, I've recently done a PAT course after the large company I work at discovered we have a Deltapat 3309 kit tucked away. I'm actually an automotive electrician maintaining the electric forklifts and pallet shuttle 'robots' at the factory but they decided to expand my skills which I appreciate...
  6. HappyHippyDad

    Does this Legrand RCD fit this Legrand CU?

    Afternoon all.. Just lazily working through a quote on this wet and cold Sunday. I'm trying to get Type A RCD protection for my new work. At present it has Type AC RCD. My question is, does this Type A Legrand RCD (see link) fit in this CU as a direct replacement for the existing RCD (see...
  7. OnlQQker

    12v Rcd or equivalent

    Why isn't there any? If you're using only the plus-negative on the battery and the only grounding point is battery negative to chassis, then surely a 12v rcd would be possible. Or am I missing something totally here. I've scoured the internet and found absolutely nothing!
  8. W

    What rcd can I put where?

    Does any one have a link or know where I can find the diagram I’ve seen that lays out what rcd devices you can and cannot have up/downstream of each other? e.g. you can’t install a type A downstream of a type AC etc it was a good little diagram but I can’t seem to find it again, I think it was...
  9. N

    Why does RCD trip when measuring voltage with LoZ function?

    Why does RCD trip when measuring voltage with LoZ function?
  10. lozarus

    Oven Replacement - RCD?

    Afternoon all. Apologies if this is a stupid question. I'm currently half part way through completing 2391 (second exam tonight) - so may be getting myself in a tiz overthinking things. Either way, thought I'd put it out to the group. Task is: Straight swap of existing x5 ovens with new -...
  11. F

    Dimplex XL18N tripping RCD

    Hello, DIY requesting help with diagnosing problem My mother's storage heater has developed a fault after turning it back on for winter. It trips the Consumer unit rcd when power switched on. Initially I thought most likely an issue with an element. I removed all 3 elements and tested...
  12. T

    RCD tripping like a road drill!!

    Installed and Ecostrad iQ wifi radiator with RCD. The radiator area started making a 'drilling' noise and noise traced to RCD tripping like a drill. Help?
  13. C

    Zanussi oven tripping the RCD, Help im living on Pizza

    Hiya, I have a 5yrs old Zanussi single built in fan oven. It has recently started tripping the RCD at the fuse box. Thinking and researching i decided to replace the main element which i have done. The oven works for about 15 mins the fan comes on after a couple of minutes and seems to be...
  14. I

    RCD or Main switch in garage board

    Hi this may be a simple answer to my question but I can't find the answer in the regs If im fitting a garage board from a consumer unit with RCD protection do I need to have RCD protection in the garage board? I'm guessing I don't need an RCD at the garage board but I can't find a definite...
  15. 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...
  16. J

    Is it ok to have PV system into shared (household) RCD?

    Is it ok to have PV system into shared (household) RCD? So I've had a system installed, but not yet complete/signed off. The issue is that the PV (and a car charger) are wired into a shared RCD (with water heater, boiler and downstairs sockets). When all breakers are on, the system trips. It...
  17. T

    Does EVIOS EV Chargepoint need a special 6mA DC trip device installed?

    Hi, If i buy an EVIOS EV chargepoint, do i also need to buy a 6mA DC detector for the mains feed? Or does the EVIOS contain that? And does the EVIOS contain a type B RCD which can detect imbalance from 3mA to >30mA?...or do i need to buy one and get it installed first? EVIOS chargepoint...
  18. H

    What’s the point of earth loop if your rcd performs ?

    Hi guys was having a conversation as a apprentice I’m still not sure and was wondering why earth fault loop impedance is important if you’ve proved your earth because the rcd trips proving your rcd performs ? Can anyone tell me thanks so what my question is in short what’s the point of it if...
  19. M

    Wet UFH Tripping RCD

    Hi. I’ve recently had installed a manifold (including zone valve and pump) for the newly installed Wet UFH in my extension. The system is split into three zones 1) Hot Water 2) Extension UFH 3) The rest of the house which is the original central heating system. All work fine when switched on...
  20. S

    Why is split RCD not appropriate for TT?

    OSG Pg.40 says: '[Split CU with 2x RCCBs] is not suitable for an installation forming part of a TT system as there is insufficient fault protection of the single-insulated conductors that connect the load side of the double-pole main switch to the supply-side of the RCCB's.' Why is there...

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