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 8 replies
  • Subscribers 17 subscribers
  • Views 1045 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

Exporting TN-C-S earth in TN-S

Former Community Member
Former Community Member
I know this sounds weird, but let me explain before.


I have two dwellings both connected to one substation. One classified TN-C-S (dwelling A) and the other TN-S (dwelling B).


I have to run a new line for providing electricity inside the new plant room that will be built inside the dwelling B. The new line will be taken from a DB installed inside the dwelling A.


The reason because I need to do in this way, it is because of in the dwelling B I have no in enough power and I'm not allowed to run a new line from the substation.


My question is: if I run a new cable form the dwelling A to dwelling B, should I also connect the earth system of the dwelling A to the plant room in the dwelling B? I have to suppose yes. Obviously, I have to keep separate the two earth system, have not I?
Parents
  • Former Community Member
    0 Former Community Member
    Next question, why will the DNO not provide an upgraded supply to the house? Because the house and the substation are far away from each other. After around there is a huge park, with a lot of restricted​
    You are taking the extra 100A from their existing transformer, so the capacity is already there, I suspect that you believe that the restaurant is not near their 600A limit, what if they are? Indeed the restaurant has a 250A free so we could use part of that. ​
    Do you know that you have 100A of spare capacity in the restaurant supply? yes
    How do you know that in a short time the restaurant will not be sold, and they will require all of the supply capacity, and then disconnect the house? No, because the house the park and the restaurant are part of the same company. They are going to do this kind of job for the renovation of the entire site.​
Reply
  • Former Community Member
    0 Former Community Member
    Next question, why will the DNO not provide an upgraded supply to the house? Because the house and the substation are far away from each other. After around there is a huge park, with a lot of restricted​
    You are taking the extra 100A from their existing transformer, so the capacity is already there, I suspect that you believe that the restaurant is not near their 600A limit, what if they are? Indeed the restaurant has a 250A free so we could use part of that. ​
    Do you know that you have 100A of spare capacity in the restaurant supply? yes
    How do you know that in a short time the restaurant will not be sold, and they will require all of the supply capacity, and then disconnect the house? No, because the house the park and the restaurant are part of the same company. They are going to do this kind of job for the renovation of the entire site.​
Children
No Data

Community Rules & Guidelines