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 10 replies
  • Subscribers 32 subscribers
  • Views 574 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

Fridays rumination

Johno12345
I have been thinking (yes, smoke has been rising)


I'm not an electrician, but  am in charge of our facility and have a decent knowledge of how things work



Anyway, I want to have some distribution equipment replaced due to the age and condition of it.


I always specify Schneider Acti 9 boards or Powerpact 4 boards


These boards wont require anything bigger than 63a 3ph, so ill be ok with an Acti 9 board, but the total load is likely to be around 200 amps over an 18 way board. I was thinking that sounds a lot to put through a DB as a continuous load, but the website implies that its going to be fine. Is this right? I'm visualising a heating effect etc, so what point do you stop with a DB and go to a panelboard? Usually, if I need to supply something larger than 63a, I know ill need to have a panel board and can budget accordingly


Anyway, as I said, I'm just thinking out loud in preparation for budgeting
Parents
  • 0
    OMS:

    Well, in old skool terms, I would run a minimum of a 300A supply (and ideally a 400A supply) to a short busbar chamber and fit the 250A boards close coupled to it - and then design to limit the demand on each board to say 125A (eg 4Way Type B with 2 x 63A TP MCB's)


    That's still probably cheaper than a 400A rated MCCB panel with a lot of 63A outgoing ways - depends a bit on the capability of the "house" sparks though to assemble it properly


    Regards


    OMS




    that sounds pretty much like what I'm thinking, and would look pretty neat in the process. I have some decent contractors that are more suited to slightly more complex things like this. Also have some that don't like to stray beyond anything even slightly unconventional!


Reply
  • 0
    OMS:

    Well, in old skool terms, I would run a minimum of a 300A supply (and ideally a 400A supply) to a short busbar chamber and fit the 250A boards close coupled to it - and then design to limit the demand on each board to say 125A (eg 4Way Type B with 2 x 63A TP MCB's)


    That's still probably cheaper than a 400A rated MCCB panel with a lot of 63A outgoing ways - depends a bit on the capability of the "house" sparks though to assemble it properly


    Regards


    OMS




    that sounds pretty much like what I'm thinking, and would look pretty neat in the process. I have some decent contractors that are more suited to slightly more complex things like this. Also have some that don't like to stray beyond anything even slightly unconventional!


Children
No Data

Community Rules & Guidelines