rcds | Page 7

rcds

Recent contents View information Top users
  1. P

    Isolation Transformers and consumer unit RCDs

    Hello A little help here would be appreciated. I often use a 230/110VAC 3kW isolation transformer for review testing computer power supplies on 110VAC at home. My problem is that every once in a while I plug the transformer in and the ring main 30A RCD trips out. It's not every time so I...
  2. B

    weird IR test results with RCDs

    Hi guys, I'm doing some revision for 2391 and I've built a test rig to practice on, just one radial (lights) and a ring. The testing was all going fine until the IR tests. Results were as follows Whole installation: R1 to Rn = 0.13MOhms:eek: (R1+Rn) to R2 = >299MOhms R1 to R2...
  3. A

    16th Edition and RCDs?

    Can anyone give me a quick answer on whether or not the 16th Edition permitted the non-use of RCDs for additional protection? I've just had a call from a woman buying a house and she's described the consumer unit as having one rcd protecting cooker, shower and two socket circuits, but three...
  4. S

    Timedelay rcds

    About to fit new consumer unit in stable block. TT Intention was to fit with 100A 300MA timedelay rcd incommer with split load on x 2 63A rcd's - one at 100MA for lights etc and one at 30MA for sockets. Question is - supplier has supplied incorrect incommer which is now 100MA timedelay rcd. As...
  5. K

    Bathroom and rcds

    Hi, been to a house which is having a bathroom refit, customer wants new down lights, ext fan, lights above the mirror and shaver point.All was ok till we got round to the rcd, old style wylex fuse box so I suggested rcd spur in the loft which they didn't want in case of tripping.They are...
  6. steamboatwilly

    CU - RCDs as the main switch?

    Can a (eg, MK BS4293 63A 30mA) RCD be used as a main switch in a CU if it's the ONLY source of switching for that CU? I'm about to start work on a CU with RCD-Breaker-Breaker-Breaker-etc-Main Switch-Breaker-Breaker-Breaker-etc. I obviously need to add a new RCD for the second split but would...
  7. P

    both rcds trip on a dual rcd

    Hello Guys Can you help me please I have just changed cu old wylex to dual rcd board when I test the rcd trip times on one circuit both rcds trip at 123 x1 and 40 x 5 this is a ring main circuit 32amp I have left cu off till morning be safe prob be ok when I do rest of checks but scratching my...
  8. Big Man

    2 RCDs same circuit

    Am wanting to put in a garage CU to divide up garden and garage lighting and power circuits. Currently power comes off kitchen ring that is already protected with a 30mA RCD. For sake of convienience to client, if mower trips RCD they can flick RCD back on at garage RCD rather than having to...
  9. R

    Tripping out BOTH RCDs

    did a cu change on friday. tt system, simple split load board, dual rcds. Theres a fault on one of the lighting circuits. when one of the light switches is turned on it trips out BOTH rcds on the CU. going back to the house shortly to further investigate. would this be a borrowed neutral on...
  10. A

    usefull imfornaiton sparks , RCDs

    form one Electrician to another hope this helps some were , please tell me ? Test 1 Adjust the current setting on the test meter to 100% of the rated trip current of the RCD and perform a test...
  11. M

    RCDs to exisiting circuits

    Ive been asked to fit a few timeclocks for outside lights and also to change a few light fittings. (seperate circuits) Should all this be put on rcds? (The light fitting i am swapping is a like for like swap)
  12. S

    RCDs and high loop impedance

    Hello everyone I was wondering if it was possible in a TNCS system to add an RCD to a final circuit with a loop impedance exceeding the values stated in tables 41.2 - 41.3 to ensure fast enough disconnection during an earth fault. I had thought it was but if so why are RCBOs subject to the same...
  13. S

    RCDs trip under no load

    Hi (first post) Has anyone had trouble with Wylex RCDs? Just installed a consumer unit and both my RCDs trip on power on but with all MCBs off and unable to reset them. Never used Wylex before so can I asume both RCDs are faulty? Will pop out and get some replacements, but thought I'd ask if...
  14. C

    ccu rcds

    hi guys just thinking about something when u change a cu as a upgrade r u putting everthing on rcds ie bathroom light on the upstairs ciruit and the other thing because of the cables not being 50mm in the wall do these have to be protected aswell :o:o:o
  15. R

    RCDs and the 17th

    Just wondered what everyones thoughts were on this hyperthetical situation which has been bugging me: If you were to install a ring circuit in a new extension using T+E in 20mm pvc conduit buried in wall 30mm deep etc. The house has a TNS supply, a Wylex fuseboard with cartridge type fuses...

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top