integrity

integrity

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  1. O

    High integrity socket earthing

    2nd fixing some sockets in an office today and we were talking about high integrity earthing, I've not got a clue what the sockets are going to supply, I'm guessing PC's, monitors, that sort of thing. There aren't any specs for the job so we just wired them as you normally would, I was trying to...
  2. Zdb

    High integrity earthing

    Only time I've done this has been using the two separate CPCs of a RFC using different terminals inside the D.B as per 543.7.1.204 I've been asked to test a load of high integrity radial circuits with two separate (different sized) CPCs. My question is, in the box which asks for the CSA of the...
  3. E

    High Integrity Earthing

    Hi Guy's, Need your take on a commercial office IT environment. I am getting earth leakage total of 26mA, okay, spread over 22 workstations & 4 Server & ups IT devices, not bad. The power RFCircuits are fortunately spread over a split load board / 2 RCD's. No nuisance tripping reported. Subject...
  4. GBDamo

    High integrity earthing.

    i understand the need, as I see it any circuit with a likelihood of more than 10 mA earth leakage should be subject to high integrity earthing. This requirement can be achieved by many methods and I can see the sense in some. Using RFCs instead of radials gives two paths so in the event of a...
  5. W

    IP Integrity question

    Hi , just after a bit of advice. A customer is asking me to put a small opening in the front of an IP 65 enclosure. He wants a clear lid (like what’s on front of a RCD enclosure) so he can just flip the lid up and adjust something if he needs to. I seem to remember seeing some spring loaded...
  6. B

    Creating high integrity ways in stacked cu

    Hi, just wondering if my plan is any good or if you've got a better way! I've got 2 10mm SWA sub mains going to outbuildings, currently fed from rcd protected ways on a stacked Hager CU. New boards in outbuildings all Rcbo units, so don't need or want RCD protection at house end. Main switch...
  7. Dave

    How to check the integrity of insulation?

    I recently bought a house and started to rewire it. A sparks mate came and helped with a few bits and I got him capping the chases. He put a nail through a cable in one chase, then told me he may have done it in a couple of other places, he's not sure! I had a plasterer going round behind me...
  8. S

    High integrity earthing

    Hi all. quick question, on a rfc wires in 2.5 single or tne, can you use high integrity sockets and terminate each cpc into a different terminal, and same at the db, or do you have to pull a 4mm radial cpc in aswell. i learnt that you could just split the cpc at college years ago, but reading...
  9. S

    high integrity board layout - Is this Ok?

    Hi, I have looked inside my Dad's Consumer Unit and I noticed that it has 2 RCD's but also 1 RCBO. I've seen these before but on my dads I was worried that it has to many (live) terminations into the bottom of the main switch? It has the usual 2 live conductors (wires) in it each going off to...
  10. DaveyD

    Rcbo

    Hi everyone. Im an electrician but I don't install PV I am doing some works and changing a cu. The customer already has pv fitted. There is no room to add a separate board and they have put a 16a mcb on the rcd side if the 16th edition board. TNC-S earthing arrangement. The cable is buried...
  11. T

    high integrity board

    I'm wiring a ring main into a room in a house that is being converted to an office with Dado trunking. The guy has several computers and loads of IT equipment therefore I'm weary of putting it on an RCD due to the earth leakage. Im changing the CU also so ive ordered a high integrity board with...
  12. F

    High integrity earthing

    In the office building were we are doing 5 year eicr s I've come across this under the floor are bus bar power tracks supplying various power points under floor and to desk top pcs so the maintenance guy on site tells me the pcs are plugged in to the red sockets because they have 2 earths in fot...
  13. scotsparky

    High integrity earthing

    Ok just a quick question to confirm my suspitions. A 4mm radial in metal containment for sockets is ok as high integrity earthing as both the 4mm CPC as well as the metal work are classed as eaarthing conductors so there is a parallel earth path. Please correct me if i am wrong
  14. R

    lack of high intergrity earthing on computer socket radials

    hi this installation was carried out in the 1995 ish advice please on what code should be issused for a server room and also floor sockets (althought server room and floor room are on sepearate circuits) wired in 2.5 / 1.5 TW&E as radials with no high integrity earth i.e only one earth...
  15. 2

    The integrity of 2.5mm "flex" vs. Twin & Earth

    Is there any rule, as per the regs, that states that flexible cable can or should not be joined with T&E for the purposes of extending? When I say "flex" of course I mean the stuff that you can twist the cores with your fingers vs T&E, which is a lot tougher and requires a tool, but is still...
  16. C

    Computer circuits please help

    Hi I'm new so sorry if in wrong section, I have been asked to wire up a test rig, the customer wants to put power in for a test rig with 40 double sockets to test computers, till systems and kvrs anyone any recommendations on best way of doing it...
  17. M

    High Integrity Earthing for computer sockets.

    Hello i have attached a picture of how i think a high integrity earth should be wired for computer sockets in a ring. I have a few questions to ask if possible please: 1) Is the additional 4mm earth necessary if the circuit is wired in a ring? If so does the additional 4mm cable need to be...
  18. T

    High integrity or split load CU

    I rang my wholesalers today and asked for a price on a high integrity consumer unit saying it needs to have the 3 neutral bars. he left me 5 mins and rang me back with a price. He said it comes with a 100a isolator and that's it, I asked how is it split... Like a 5+5+2 ect.... He then said...
  19. G

    High integrity earthing

    Can anybody here give some examples of this, and in what situations it would be used? More importantly my understanding is that you would need an extra bar at the DB, which is then maybe insulated?
  20. G

    High Integrity CSU on TT system.

    If a High Integrity CSU where every circuit is protected by a mix of RCDs & RCBOs is connected to a TT system, is it still necessary to fit a 100mA S front end RCD?

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