Recent content by Daniel Owens

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    Max zs values

    Leaning on what? I dont have the full regs just onsite guide Are you able to answer my question?
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    Max zs values

    Sorry i dont understand
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    Max zs values

    Hey all im just trying to learn max zs values from a NICEIC chart i have, now learning these values isnt a problem but the sections reffering to bs3036 fuses and type D mcbs both have two lists of readings - one each for 0.4s and 5s trip times - where as the sections for type B and C only have...
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    Hypothetical situation

    Hi guys Hypothetical question here What are the symptoms (if any) of a ring within a ring main? Is there anything to look out for physically or symptomatically or are they just sonething you stumble across? Thanks D
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    Resistivity maths problem

    And to everyone else who posted a reply D
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    Resistivity maths problem

    Ok thats working now, thanks for your help D
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    Resistivity maths problem

    Actually sorry to be a pain but ive put that in my calculator and squaring 1x10 to -3 still yields 1 x10 to -9 Am i misunderstanding something? When you square numbers youre multiplying them by themselves yes?
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    Resistivity maths problem

    Ok i get it now appreciate the quick response
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    Resistivity maths problem

    Hey all im just a bit confused with the formula for resistivity, i understand it until the text book gives an example whereupon the csa of cable goes from being 1.5mmsq (which i take to be 1.5 x 10 to -3M sq) to 1.5 x 10 to -6M sq which would make a csa of 1.5micrometeres would it not? Ive...
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    PAT testing question

    Hey all So my boss has got me PAT testing for the firm now but ive a quick question - A few times when conducting tests on class one equipment ive noticed some slight arcing occur - does anyone else experience this and what is it as it shouldnt happen surely? Thanks D

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