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 4 replies
  • Subscribers 36 subscribers
  • Views 1083 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Diversity for a new install

05ballard

Hello all im wondering if you can help me I’ve been asking to quote to completely rewire a holiday home park with fill electrical cabins from start to each cabin but im having issues working out the size of cable I’m going to need to bury in the ground the customer wants 63a or there about at about 200 of these cabins the incoming supply is 800a per each phase but I want to allow for diversity but im struggling getting the answer I need can someone either help or point me in the right direction  

Parents
  • 0

    Well you won't get much help on this from the diversity calculations in the OSG.  To a larger extent it will depend how well insulated these places are - things like caravan parks can be very variable, and if it is not warm then folk use the oven to warm  the place etc.. That said you can take comfort from the way the DNOs calculate loads for streets - a  500KVA substation may feed 50-70 houses per phase single phase and the odd parade of shops with 3 phase, and the fuses rarely fail unless there is a real fault.

    To facilitate maintainence you probably want to lay it out as a few tree and branch radials with a box or pillar by each chalet that also means that if there is a problem, zones can be isolated and then power brought in for another zone if required,

    How will site loads (street lighting etc) be handled?

    This link is to a document by SP - pages 18-20 show how they estimate the demand for houses with substation load, but sadly not for chalets and caravans, other DNOS publish very similar information.

    Mike.

Reply
  • 0

    Well you won't get much help on this from the diversity calculations in the OSG.  To a larger extent it will depend how well insulated these places are - things like caravan parks can be very variable, and if it is not warm then folk use the oven to warm  the place etc.. That said you can take comfort from the way the DNOs calculate loads for streets - a  500KVA substation may feed 50-70 houses per phase single phase and the odd parade of shops with 3 phase, and the fuses rarely fail unless there is a real fault.

    To facilitate maintainence you probably want to lay it out as a few tree and branch radials with a box or pillar by each chalet that also means that if there is a problem, zones can be isolated and then power brought in for another zone if required,

    How will site loads (street lighting etc) be handled?

    This link is to a document by SP - pages 18-20 show how they estimate the demand for houses with substation load, but sadly not for chalets and caravans, other DNOS publish very similar information.

    Mike.

Children

Community Rules & Guidelines