Testing of radial circuit,which feed an ring final circuit

Discussion in 'Electrics UK' started by rockenroll, 20 May 2008.

  1. plugwash

    plugwash

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    I wonder why they used a TP+N switchfuse, seems like overkill maybe it was just what they had hanging arround.

    Testing it is pretty easy, just treat the two parts seperately.

    Recording the results is the tricky bit IMO, you could treat it as a seperate DB with it's own cert but that seems like overkill. Not sure if there are other acceptable options.
     
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  3. holmslaw

    holmslaw

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  4. rockenroll

    rockenroll

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    Hi fellas

    Circuit should be taked as two parts, one test for radial-record results,second test the ring-record results.For recording the values in schedule of test results record 1st radial(0.11) ohms, and for ring somebody sugest me that should be recorded the highest value for ring(wich was 9.3 ohms), for the ring connected on L1 of the 3P+N isolator, and other two phases L2,L3 unused recorded as spare, I am not sure if should be make some note on remark section for the highes value obtained for ring :?: , or just writing on observation and recommendation section non compliance of circuit with BS 7671-code 3 ;)
     
  5. JohnD

    JohnD

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  6. rockenroll

    rockenroll

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    Anyone know if is correct current discrimination between Type C 32Amps
    and downstream BS 88 (fuse) 32 Amps :?:

    Good weekend fellas:cool:
     
  7. rockenroll

    rockenroll

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    JohnD if u are fully conversant with BS 7671:2008 enlighten me with the answers to my questions :cool:, if not continue to correct people and somebody will hire u

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  8. holmslaw

    holmslaw

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