Posting a message to the forum will remove the above advertisement
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. angel While you're here, would you mind checking out our Electrician's Insurance section to see if we could save you a few quid? - Specifically our Van Insurance Deals and Public Liability Insurance Deals. Thanks for supporting the forum! angel

    5% Discount from for ALL members! - Click Here

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

Please make sure you checkout our forum sponsors, many do discounts for members and, they keep the forum free to use.
  1. mhar

    mhar Electrician's Arms

    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

    Risteard Electrician's Arms

    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

    Wilko Electrician's Arms

    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
Similar Threads - volt drop questions Forum Date
Volt drop.............................................. .... Electrical Forum Jun 30, 2018
GS38 Compliant voltage indicator recomendations. Electrical Tools and Products Monday at 12:12 PM

Share This Page

Electricians Directory Post a Domestic Job Post a Commercial Job