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disconnect

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  1. the pict

    RCD issue, or is it?

    Changed a consumer unit everything fine all test came back hunky dory, but one RCD would not trip on the test button so swapped them around, same deal,I then got random trips from unassociated circuits IE kitchen ring plug in kettle and the opposite RCD would trip disconnect incoming earth...
  2. MKspark

    Isolation Certificate

    Morning All this might seem like a strange question but we are re-wiring a lot of kitchens where the kitchens will be ripped out the day before we start works, but they would like us to isolate the Kitchen Ring and cooker circuit before its ripped out as some points are surface mounted on the...
  3. J

    Insulation resistance testing Lighting circuit

    Hi everyone. I'm looking for advise on how to test IR on commercial lighting. There's so many lights on 1 circuit , do I have to take out all the lamps in all the lights to perform the test or can I simply test between LN -E ? Even though I have spent lots of time testing domestic installs and...
  4. P

    Quote for replacing old storage heaters

    Not sure if this is the right forum but can anyone advise on this? I am replacing 2 storage heaters and have been quoted around £1,100 plus vat for removal/disposal of the old (non asbestos) ones and fitting of the new ones (Dimplex manual not Quantum). I could order these heaters myself for...
  5. S

    Disconnecting a power outlet from a 3 phase control box

    Good afternoon everyone, I'm hoping someone can give me some advice /guidance. My brother in law has a large saw bench with a 3 phase motor, he has sold the bench but we need to disconnect the cable for the motor from the metal electrical 3 phase control box. I'm a retired person but have done...
  6. S

    IR testing

    Hi guys, might make myself look stupid here when wanting to carry out an IR test on a lighting circuit and you have sensitive equipment that you can't disconnect,if you do an IR test linking L-N to Earth is this basically the same as testing L-N. the reason I'm asking is because I have an issue...
  7. B

    Disconnect Reconnect and Isolaters

    I'm just interested in what you guys do when you have a consumer unit swap, 1.get the electric board to fit an isolator for you? 2.get the electric board to do a disconnect reconnect? 3.pull the main bullet yourself? 4.whip the tails out live? Everytime I change a consumer unit I get power to...
  8. J

    Measuring Zs with RCBO

    Hi everyone, I've read that when carrying out earth fault loop impedance test we have to disconnect the functional earth of the RCBO (in case there's one) from the earth bar to avoid misleading result. Is that correct and is there anything else we have to disconnect? I know about carrying out...
  9. J

    Insulation Resistance Test with RCBO

    Hi guys, I was going to carry out a IR test on a CU with a few RCBOs, but I wasn't quite sure how to proceed. Which neutral do I use - the one on the N-bar or the one going to the RCBO? Because if I use the one from the N bar I will actually test just that short piece of cable and through the...
  10. S

    Disconnect times for adiabatic

    Am I right In assuming that as long as you have worked out the fault current from a zr that meets regs for the breaker you can just use the disconnection time of 0.4 etc instead of using the graphs which I can never seem to understand
  11. keniff

    Texecom alarm

    Hi guys I have a texecom veritas alarm I installed about a year ago, I'm wanting to move the bell box outside to a different wall but Im not sure how to bypass the tamper on the bell box so it doesn't bell up when I take the lid off, any ideas or help would be great!
  12. B

    MCS/Domestic RHI disconnect

    I think I have bumped into a small disconnect between the two schemes. Architect designed new-build / self-build. I install and commission ASHP and solar thermal. Client moves in a few days later. Client applies for domestic RHI a few days after that. Solar thermal application going through...
  13. M

    removing alarm sensor

    Hi guys. Just a quick one. Doing the electrical work on an extension and they used to have a garden shed with an alarm sensor in it. I want to remove the sensor from the system but wondering what's the correct way to do it. The sensor has a +,-, tamper and N.C in it. So do I just bridge out that...
  14. G

    unidentified circuit

    did a cu upgrade on a house the other day but could not identify 1 16a radial circuit. The old board was not labelled and the owners were no help. I searched high and low for it and the house was also full of junk which didn't help. What do others do in this situation ?
  15. D

    rcd meter tails

    hi i tested a domestic property earlier,and someone has sunk the meter tails,the fb is a 17th edition,my question what size external rcd is required for the meter tails,its a pme system,many thanks
  16. D

    ADT Alarm (won't let me post in Alarm)

    Hi Guys, I need to disconnect a phone line from an ADT alarm system. Contract is up and customer just wants a bells only system. I imagine once disconnecting a fault will throw up....can this be removed in user functions? Am not keen on crashing and re-programming the whole alarm. At this...
  17. A

    TT System testing and results

    Hi Guys, I have been testing for about a year and have come across my first tt system yesterday. I disconnected the earth and tested for Ze and got 8.67 ohms which I believe to be a great reading as osg allows up to 200 ohms. I couldn't do a Ra reading as the rod is under the house and...
  18. B

    Remotely monitor and disconnect off grid PV/Hybrid system - is this possible?

    I am doing a a research project (and I'm a newbie!) and I need to know if its feasible somehow to disconnect a PV array (and possibly a wind turbine) from the batteries storage should that need needed for safety reasons, to prevent any possibility of damaging the batteries. Firstly I'd imagine a...
  19. G

    Arching from neutral on stud work

    Hi all, took s load of sockets off on a job and plasterers have been in to take the plaster board off , builder rang me and he says its arching on the stud work from the neutral, going down tomorrow to have a look, lives are out of the RCBO's but earths and neutrals still connected. you guys...
  20. S

    ZE Testing

    Hi Gents. What a lovely day - 27c in my living room!! Will need the fan tonight. When ZE testing do you take the main earth out from the CU or the MET? If you take it out of the CU would I get bad readings due as the earthing to the gas and water services? Thanks

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