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  1. yellowvanman

    Inverter on earth stake?

    Been asked to replace an old consumer unit, PV installed so bonding etc up to scratch. House supply is TNCS, however with the PV wiring the inverter (Fronius) is on its own earth stake! So that makes 2 earthing systems in close proximity! Why would they want to earth stake the inverter?
  2. F

    Submain Earth/Bonding question?

    Hi guys/girls Just some clarification needed. I have an house where there is sub board in the garage , and also a boiler in the garage. The water copper pipe that connects to the boiler is continuous from the house. I am aware of the exporting PME situation so plan to drop out the 3rd core of...
  3. G

    Kitchen cooker connected to fan

    Hi Guys Currently doing some work In a hotel who are looking to re-open their kitchen for meals, ima, installing a new cooker and someone fro, HSE has been out and said the cooker must be connected so that it will not work unless the extractor fan is on. The fan is vent-axia 450-14 fan with a...
  4. Stuart Houghton

    Export Limitation

    I received a call from a person who was not a customer of mine asking to connect up his 8 kW PV system. Its a new build and the modules were installed when the scaffolding was up, this was several months ago. System is 2 x ABB PVI 3.6-TL-OUTD inverters connected to 32 x 250 watt modules. The...
  5. N

    Insulation Resistance test with 12v transformers

    I am installing a C/U and the kitchen has some old Down lights installed with 10 x 12 volt transformers connected. I know I could disconnect all the transformers but I don't plan to do that as it will be a real pain due to how the plasterboard has been bodged. Some opinions suggest the IR...
  6. Leader

    Supplementary bonding question

    hi all, I know there are many questions on this topic but I'm unable to find my answer. Can I connect my 4mm supplementary bonding cable to the cpc in my shaver socket which then links directly back to the light (and via the cpc back to the CU)? Sorry if it's a basic question, I am still training
  7. terry1969

    low IR

    hi did a IR on a shed board L-N was 0.11Mohms so took out the radial circiut and light circuit did them separately and was fine 299Mohms so why low when they are connected to the shed board????? dont do much testing so help be nice cheers
  8. S

    Generator earth

    Hi all, first post for some time! Currently installing power and lighting into a small cabin. Supply will be from a permanently connected generator and using a rod for earthing purposes. Carrying out testing today and only getting 197v between live and rod. Guessing I may need another rod which...
  9. A

    13A Oven Install Query

    Hi, I have just purchased a new oven which is 13A. The old oven was connected to a MK 45A DP Cooker Control Unit with Neon. Can I just connect the 13A to teh same socket? The previous oven was a Bosch which was rated at 16A. Thank you.
  10. P

    Ring main tripped struggling to find cause

    32amp ring main tripped mcb and rcd overnight. Rcd will reset but not all the time, mcb will not reset. Unplugged everything in house and mcb still trips, but rcd ok now. 32amp ring main covers whole house and struggling to locate fault. I'm newly qualified and probably missing something obvious...
  11. akwoody2

    EICR question

    Hi chaps, This may have been asked before but i cant seem to find it when searching so im sorry if someone easily finds it. Im currently carrying out a EICR at a commercial premises and the water is bonded from a sub DB and not the MET, its something that i understand needs to be noted but is...
  12. W

    3 lights off one lighting spur? any issues

    have this arrangement in loft: 3 lights going to a 3 gang switch, each live going to each L1 terminal, neutrals connected together in wago block, each com terminal linked with small link cable. supply comes from junction box which is spurred off lighting circuit, live from supply goes to com...
  13. K

    Moving switch.

    Hi. Hope someone can advise. Moving a light switch from an outside shed, through the wall and into my utility room. Have drilled through and re-connected switch but now have no lights in shed but do have in the utility room. Is all connected up exactly the same. Seems to be where we position it...
  14. T

    Star Delta motor into DOL starter?

    Hello everyone. I have a new star delta pump (7 core flying lead) that has to be made off into a DOL single contactor starter. Is this possible and does anyone know how?
  15. T

    Shower tripping sockets rcbo

    On call and the socket rcbo is tripping when the shower gets turned on.i have traced the shower cable and it goes from db to switch to shower.there is nothing connected into the sockets it is on a 40 a rcbo the sockets are 32a The socket rcbo trips but the shower one doesnt. Any thoughts?
  16. mrloy99

    Insulation test

    Hi All.Bracing myself here for torrents of abuse. Is there any reason why an I.R. test can't be done at a socket rather than at consumer unit.
  17. westward10

    Clipsal rcbo.

    Tested a Crabtree Polestar board today full of Sector rcbos, tested many of these boards and never seen this. The only Crabtree devices were two mcbs but the Sector devices are identical to Crabtree devices. Out of the nineteen four failed which is something you don't get with Crabtree rcbos...
  18. N

    Alba car radio

    A very strange problem..replaced my stolen car radio with a new Alba car radio , connected the universal ISO connectors with no problem. Engine OFF radio works perfectly, however Volume control does not work when the engine is RUNNING...(obviously voltage exceeding the 12 volts with the...
  19. V

    Dangerous Work Exposed!

    Hi Guys, Have i been to a hum dinger of an installation today! Are we sitting comfortably then i'll begin. An electrician i was talking to in the wholesalers mentioned that he was having trouble tracing a fault where there was 60 volts on the pipework and he was having trouble tracing it.I...
  20. captaincaveman

    Ring Main Tripping Rcd And Connected With Main Earth

    Hi you beautiful people. Just been looking at a rather confusing and disgusting job in a two floor ex-council house and wondering if anyone could give me any ideas (apart from walking away from it). The ring has been tripping the RCD (main switch) Live and Neutral have both failed IR test to...
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