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 24 replies
  • Subscribers 32 subscribers
  • Views 2915 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

Old incomer connected to four 3 phase cutouts help

Simon M
Hi all,


I have a very old incomer entering the building that then feeds to 4 x 3ph cutouts. You can see two of the 3ph cutouts in the pic.
9f8642aebed8db60e40f7a2578ffd3a3-original-02.jpg


The incomer says on it  - BI Callender's - 4E 150 x 3. I assume this means 3 x 150 Amps? Please do correct me if I am wrong.


1. What is the maximum power I can draw from this system?


2. If each of the 4 Three phase cutouts were loaded with 100 Amp fuses and I was to pull close to that from each fuse. what would happen to the incomer as this would equate to 1200 Amps!


3. Is connecting 4 3ph cutouts to this old beast a reasonable thing to do? Or is it ridiculous?


Many thanks

Simon
Parents
  • 0
    Simon M:

    Thank you for the replies very useful.


    The property is a listed 200 year old foundry converted to offices in the 60s/70s.


    The intended use is education, arts spaces, maker spaces, small studios etc. So no dwellings.


    Originally heated by storage heaters which have now been removed, we are at the strip out stage but plan to have panel heaters in the rooms (number to be decided).


    As the storage heaters were huge old things I am presuming they would have used a lot more juice than a modern panel heater. Albeit on economy 7. 


    I just have to do the calcs.


    Many thanks as this puts my mind a bit more at rest regarding the power we have available.

    I do have the DNO coming out in an attempt to try and get them to upgrade the incomer but I'm not holding my breath.


    Regards

    Simon.


    Change the usage to a gym, then they will not need any heating.


    Z.


Reply
  • 0
    Simon M:

    Thank you for the replies very useful.


    The property is a listed 200 year old foundry converted to offices in the 60s/70s.


    The intended use is education, arts spaces, maker spaces, small studios etc. So no dwellings.


    Originally heated by storage heaters which have now been removed, we are at the strip out stage but plan to have panel heaters in the rooms (number to be decided).


    As the storage heaters were huge old things I am presuming they would have used a lot more juice than a modern panel heater. Albeit on economy 7. 


    I just have to do the calcs.


    Many thanks as this puts my mind a bit more at rest regarding the power we have available.

    I do have the DNO coming out in an attempt to try and get them to upgrade the incomer but I'm not holding my breath.


    Regards

    Simon.


    Change the usage to a gym, then they will not need any heating.


    Z.


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