potential | Page 5

potential

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  1. M

    Mains bonding query

    Hi all I'm going through my training and am confusing myself in regard to mains bonding. Is it there to protect the instalation from a fault withing the building or a fault outside the building making the incoming water or gas supply pipes live. Sorry to sound stupid but I need to get this...
  2. the pict

    potential on earth & N

    I have a ( brief over view) 5 Db's served from main board by C50 OPD,s inadequate main earth 6mm self tappered to metal of CU's I can get a decent ZS/PFC/ DB if I clamp onto brass nut of SWA (and set my tester to a B50) but not on disconnected main earth, would this poor earth cause a potenial...
  3. C

    Any advice on a potential job offer?

    Just after some constructive advice or a 1 word answer will do... Am an Improver subbing, trying to fill my weeks and trying, along with every other Improver or latest DISQ Qualified to find a break with a company that is offering something permanent or at least heading that way. I have a...
  4. B

    IR TESTING - advantage of connecting L and N?

    GN3 states that it acceptable to connect L and N together and IR to earth in a situation where all wires cannot be disconnected from accessories i.e a row of fluo's But what is the advantage of doing this rather than just individually IR testing between first L and earth then between N and earth?
  5. La Poste

    TT Earth and Neutral voltage.

    Just out of interest if a TT system is installed with a decent earth rod what sort of voltages exist between the Neutral in respect to real earth potential of 0 Volts? What's the average Neutral to Earth voltage, does it fluctuate from time to time? Does it get dangerous??? Thanks.
  6. F

    Why does a volt-meter not show a reading when connected to the same phase?

    When a volt-meter is connected to the same phase. Why doesn't it show a voltage reading? Thanks in advance for any explanations.
  7. A

    Potential Transformer Testing

    Hi, Please advise me that how can i test 6.6kV PT because it is much older and i have reconeect at our system after checking it. Thanks Asif
  8. D

    Targeting potential employers

    Hoping to get some advice on contacting employers from those that've found some success from it! I've already started contacting a few, albeit via letter only. The companies I've wrote to are; Balfour Kilpatrick, Bailey Building Services, Rok, GS Hall and regional company called Gus Robinson...

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