Search results

  1. D

    How to test my mains supply is earthed properly

    Thanks for your input. Amp / guitar humming dropped by about 50% when I plugged it into a different ring. I also noticed that if I have my laptop next to me when I am holding the guitar, my body channels noise into it and (as I read somewhere) when I touch an earthed part of the guitar it...
  2. D

    How to test my mains supply is earthed properly

    I want to see how effective my earthing is, but preferably not using myself as a conducter. :) I have a steel bath and nearby are copper pipes running into the boiler closet that are bonded - that is what I would like to ensure is properly earthed.
  3. D

    How to test my mains supply is earthed properly

    Thanks for the advice- I have spent sometime researching it this morning :) I have a strat with a single coil pickup so some humming is to be expected but my home electrics are a bit dodgy so it is one possiblity. I still want to test how effective my earthing is - even if it is just to...
  4. D

    How to test my mains supply is earthed properly

    Thanks Ban. :) I live in london in a terrace so I imagine it's TN-S or TN-C-S (I'll check later). What would the Ze value tell me? Will it tell me that my home electrics are connected to the electric supply companys earth? Is there a specific measurement I could do, say at the point my...
  5. D

    How to test my mains supply is earthed properly

    Hi - This might be a stooopid question, but... I want to check that my house electrics are properly grounded. When wiring up my boiler, an electrician extended an existing ground wire (previously used for an immersion that has now been removed) and bonded all the pipes. However, I would like to...
  6. D

    Mystery Circuit Overload

    breezer - just checked out your useful reference post again and it makes much more sense now. If I want to isolate and check each stretch of cable between power sockets on my ring circuit, what is the usual approach?
  7. D

    Mystery Circuit Overload

    Thing is, the whole cable either runs under a concrete floor or through a series of partition walls, some of which has been replastered a month ago. If there are say 5 power sockets around the room, would you therefore have to run new cable to all 5? I was hoping I might be able to replace...
  8. D

    MCB and wires

    erm.. it's an rcd
  9. D

    Mystery Circuit Overload

    The originally faulty circuit had a cable problem. A circuit tester on live-earth and neutral-earth showed they were all connected. Plus I have learned by taking the fuse box apart that each circuit isn't entirely isolated as they all share the neutral and earth blocks - news to me but...
  10. D

    MCB and wires

    i'm no expert :) but i think there is a difference in the units used to measure them - i think imperial and Renard where for eg imperial is 15A and Renard is 16A...
  11. D

    Mystery Circuit Overload

    Each of the two MCBs trip even if the other MCB is off. :( Might have to get an expert in... Anyone know of any sites that have info re: troubleshooting consumer units / potential CU problems? Thanks again Dave
  12. D

    Mystery Circuit Overload

    Thanks for you comments. I intended to come home and cut the plasterboard back to investigate but i think a rogue nail might be a long shot...What are the chances of piercing wires from two circuits? I take it that the very purpose of the separate circuits is that they are isolated. Can a dodgy...
  13. D

    Mystery Circuit Overload

    hmm.. now both circuits are tripping their respective MCBs even with no load... i had a brain wave last night :idea: well actually it's pretty obvious maybe.. i nailed some skirting board to a partition wall that is inbetween my CU and the boiler - not that the CU and boiler are actually on...
  14. D

    Mystery Circuit Overload

    Hi all I have a combi-boiler recently wired up to a circuit that keeps tripping the MCB but I can't understand what it can be... The only appliances on the circuit that I am aware of are the boiler and an extractor fan (small bathroom type). The boiler has a fused switch with the...
Back
Top