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isolated

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  1. A

    RCD Trip on isolated circuit

    Hi, I am fairly new to this having only just completed and passing my Part P qualification so please bear with me. I decided to tidy up some wiring carried out in my house by a "professional" bathroom installer. The circuit in question is a 16amp radial with only one outlet supplying an...
  2. bodders22

    Strange fault

    Hi All, I was called out yesterday to a customer that has been having trouble with the electric tripping on various circuits (16th edition mem2000 board) When I got there I had a quick look and couldn't find anything obvious anyway cut a long story short did a full eicr, all circuits good...
  3. B

    CU with no main switch - is it acceptable?

    Hi My sisters cu appears to have had the main switch removed to make room for more mcbs. Whoever did this just took it out and placed it on top of the casing. The cu has 2 rcds to the 17th. But is this acceptable to remove main switch?? Thanks in advance!
  4. B

    Insulation Testing Problems

    Been to a job last week, Rcd tripping when its raining. Global IR 0.042. Tested 250v (L&N) cpc to save taken out all the lamps. TV's on walls were isolated via fused spur. Problem located on External light therefore retested (L/N - CPC).. No test beetween (L&n was done) I have now been told...
  5. S

    shower

    hi can anyone give me any information on changing heater tank and thermo cut out on mira shower, does the water need to be isolated thanks
  6. B

    gENI CHANGE OVER SWITCH

    Hi all have been aprouched to install a small suit case Geni to a house with P.V. the suit case is to run lights and a boiler but my concerns are with the P.V supply back feeding through the geni.the customer said he will be turning of non essential circuits but I have heard than before. my...
  7. G

    RCD tripping randomly over the past few weeks

    Hi, First post so welcome all and here goes Over the last month the GE RCD has tripped randomly, the last time when we were asleep in bed and nothing more anoying to wake up late as alarm not gone off and all house sockets dead. When i try to reset the rcd it will not reset until i turn off...
  8. polo1

    Testing of an RFC linked to a UPS

    Hi all, bit of advice please - as the title, I have been asked to test a RFC which is served by a UPS. It's in an alarm receiving center. Any advice on what I need to watch out for, testing protocols etc? Not workred on this kind of set up before. Regards.
  9. P

    Pir in a garage!

    been asked to do a PIR test in a garage, been to the job and was wondering how to go about taken readings on equipmen(2 and 4 post ramps) that is isolated by a switch and with is isolated by another switch, there is no way of opening up the equipment, how can i take Zs of Insulation? Got me...
  10. J

    WARNING old Style Wylex Breakers (not Plug ins)

    Hi Guys Just a word of warning to you all. I have been working on an industrial site that has the old style wylex 3-phase DB's (nothing wrong with them). Whilst isolating circuits I have noticed that some MCBS are NOT disconnecting the supply when in the off position :eek:. Out of the 20...

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