Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 31 replies
  • Subscribers 32 subscribers
  • Views 3713 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Radial Voltage Drop Calculation?... By Load or MCB Rating?

Nano Brewery
I'm doing the calculation for total voltage drop.  I have 14 radials/ways going out.  As I understand it, that would equal a max allowance of 0.285% voltage drop per radial/way.  Or some sort of mixture throughout not exceeding the 4% drop allowance overall.  Firstly, is this correct? 


Secondly, should I be doing my calculations based on actual Load or the MCB ratings of the individual radials/ways? 


Thanks in advance!
Parents
  • 0
    Run around on tray.

    How are you attaching the cables to the tray? Bear in mind that supporting cables only using plastic devices (e.g. nylon cable ties) is no longer permitted.




    Cheers Andy.  Cables will be on top of horizontal tray, I understand that plastic cable ties are fine for attaching in this situation?  Is that correct?  Any vertical or horizontal cable runs without tray support will be clipped direct using metal wall cable clips.

    Re Cable choice - what options would you personally go for?

    Main cable runs to power sockets and/or isolators around perimeter on tray and clipped direct, all above 1m from ground - NYY?  SWA?

    Secondary cable runs from Isolator (1m above ground) to Element (30cm above ground) -  CY?  NYY?  SWA?


    Cheers!


Reply
  • 0
    Run around on tray.

    How are you attaching the cables to the tray? Bear in mind that supporting cables only using plastic devices (e.g. nylon cable ties) is no longer permitted.




    Cheers Andy.  Cables will be on top of horizontal tray, I understand that plastic cable ties are fine for attaching in this situation?  Is that correct?  Any vertical or horizontal cable runs without tray support will be clipped direct using metal wall cable clips.

    Re Cable choice - what options would you personally go for?

    Main cable runs to power sockets and/or isolators around perimeter on tray and clipped direct, all above 1m from ground - NYY?  SWA?

    Secondary cable runs from Isolator (1m above ground) to Element (30cm above ground) -  CY?  NYY?  SWA?


    Cheers!


Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines