rcd's | Page 6

rcd's

Recent contents View information Top users
  1. A

    Help please rcd does not trip.

    Hi folks I have just installed an new mk consumer unit, but I'm having problem with the 63A rcd's. The test button works fine and it does not trip @ x1/2 it trips at 99.0 @ x1 and fails to trip @ x5 (>40ms) Its not the tester as I've checked it on another installation I know to be good. Any...
  2. La Poste

    Most reliable RCD brand.

    Greetings. There has been much talk of the unreliability of RCD's lately so I was wondering what are peoples thoughts on the most reliable. Do you have a favourite brand? What do you think is the worst brand? I am hearing quite good things about MK brand but they are quite pricey. Thanks.
  3. S

    RCD's inline

    Sonebody correct me if Im wrong please. Scenario: On a local gypsy site, the plot consists of an.outbuilding that contains shower,water heater utilitys bench and some lights. Also.supplied is a 32a comnando socket used to power the main caravan. The main CU in the outhouse is controlled by a...
  4. 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
  5. La Poste

    RCD's in series

    I was having a chat with my electrical boss today about this and that and we discussed wiring a radial in a garden supplying various things like a greenhouse and a garden shed. He was of the opinion that things like greenhouses should be TT'd with an earth spike and RCD protected. The thing is...
  6. L

    What in an installation can make RCD's trip at 17ms when, its not faulty?

    Hi fellas Can anybody think of a reason why a new RCD which ramps at 28mA in one installation trips at 17mA in another?, is it a supply problem?, on the X1 test on 0 degrees it trips in 31ms but on 180 degrees I get noS ?, tester is a megger RCDT 320 Cheers
  7. S

    RCD's with Photovoltaic's?

    Hi guys I just want to pick your brains about the basic schematic for a Domestic Photovoltaic system. If the High Integrity CU has not got a spare way on the RCD side of the board can I bring the circuit out of a Non-RCD controlled circuit? The circuit would be as follows I have singles going...
  8. G

    RCD tripping on "No Trip" Zs test

    Hi folks, changed a CU over yesterday to a dual RCD board. Standard affair, all tests fine. Did live tests, started doing the Zs for the lights. Both up and downstairs lights kept tripping the RCDs. I'm using my Megger with the 3 leads to avoid tripping. Megger was set to No Trip Loop and all...
  9. S

    multiple RCD's tripping throughout the building

    One of the buildings we maintain has had a problem on and off for a number of years now with multiple RCD's tripping simultaneously on different fuse board's across all three phases throughout the building. I have literally stood watching the fuse board's within the electrical intake and have...
  10. C

    500mA RCD

    HI, first post so treat me gently please! (Also posted this in the Sticky Threads by mistake). At work we have a moveable electric hoist unit that travels round and gets plugged in via a fly lead on a spring loaded cable extension drum to one of various sockets. The sockets are fed as a radial...
  11. R

    300mA RCD question

    Gents Can anyone give me the standards and justifications for fitting a 300mA RCD for the purpose of fire/ equipment protection. I have a UPS on site with all the loads fed from 300mA RCD's. I have never come accross this before and problems have been rearing their head with RCD's tripping on...
  12. H

    RCD trip on Zs

    Was at a job today and did a Zs on sockets which tripped the RCD. Can't isolate circuit as computers needs to stay on. I've been asked to go back next month when everything can be isolated to find the fault. Guys in office say it happens from time to time when things are plugged in. I first...
  13. G

    Compartment trunking and RCD's in offices

    Is it acceptable to NOT install RCD's for sockets provided that all the cabling is routed through wall mounted compartment trunking in accordance with the UK regulations? My concern is that installing RCD's on 13A power circuits feeding electronic Data equipment could lead to inadvertent...
  14. Doomed

    Hagar split boards

    In the last 2 weeeks I have fitted 3 5x5 Hagar boards. On testing both pre fitted RCD's failed on all 3 boards. The replacement RCD's worked fine. Be warned. Annoyed over the lost time. First one took a hour and a half round trip to get the replacements.
  15. V

    high readings on RCD test

    I put two new spikes on a tt system and I am now getting a reading Ze-84ohms, I put new 30Ma trips on three boards but ,I am getting high tripping times on two of the RCD would this be the trips or would there be some other reason?
  16. J

    RCD's on farms

    Hello, was wondering what people thought about a cable supplying the farm buildings, i need to replace the cable so it now be a 16mm swa from service head area, across the garden and into the 1st shed, i was look ar brb and saw reg 705.411.1 (iii) which says all other circuits require 300ma rcd...
  17. D Skelton

    CU change. How many RCD's?

    Hi people, I have a nice little consumer unit change to do in a couple of days. Quite a nice little job if you ask me but the funny thing is, it's in a flat and there are only three circuits. Lights, ring and cooker. What are your views on the type of CU I should put in? My thoughts are to use...
  18. K

    PV Install and Existing RCD's

    OK, this may be an obvious question, but can a PV Installation be fed from the existing CU, if the CU contains an RCD, or would you be required to split the tails, and put the PV on its own MCB within it's own enclosure? Was told today by an NIC inspector that they require their own enclosure...
  19. N

    Passive & Active RCD's

    Hi, With regards to passive and active RCD's. How can you tell if an RCD is passive or active. Are the RCD's installed in a DB all of a certain type? I've searched them and all the products with an active or passive option are sockets with the RCD built in. Any help would be appreciated. Thanks.
  20. E

    Rcd's with High Resistance

    Hi, I recently installed a new c/u and was talked into a MCG board by my local wholesalers (which won’t be happening again!!!). The problem I have is that the rcds are adding 0.51 to my zs reading. It’s a tnc-s system with a 0.04 ze. If I do an r1+r2 on a lighting circuit for example its 0.93...

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