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Discuss volt drop questions 20 characters in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

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  1. mhar
    Offline

    mhar Electrician's Arms

    Location:
    devon
    A recent post made reference to the vd figures for a lightly loaded cable could be adjusted to reflect the fact that the cable was running nowhere near it's maximum ccc. Is there any basis for this in 7671? I think it may have been Ian 1981 who posted this in reply to a question.

    If it is known that only led lights are going to be used, is there any room for 'judgement' to be used on the 5% allowance
     
  2. Risteard
    Offline

    Risteard Electrician's Arms

    Location:
    Derry, Ireland
    Business Name:
    Walsh Electrical Services
    3% (lighting) and 5% (power) are not Regulations. They are suggested in an Informative appendix.
     
    • Like Like x 1
    • Agree Agree x 1
  3. Wilko
    Offline

    Wilko Electrician's Arms

    Location:
    Berkshire
    Business Name:
    Wilko Electrics
    IMHO you are ok to use your detailed knowledge of an installation loads to more accurately assess the likely voltage drops.
     
    • Agree Agree x 1
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