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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
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  • Former Community Member
    0 Former Community Member
    Johno12345:

    if we all think they will run fine all day at the incomer rating, then all should be ok, and I'm just over thinking things a bit 


    I think you said maximum load sustained was 200A through a 250A rated DB - that should be fine


    250A sustained through a 250A rated board is a different proposition  - it will get hot, and then it depends on the quality of manufacture - sadly, many DB's won't survive full load for extended periods


    Regards


    OMS


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  • Former Community Member
    0 Former Community Member
    Johno12345:

    if we all think they will run fine all day at the incomer rating, then all should be ok, and I'm just over thinking things a bit 


    I think you said maximum load sustained was 200A through a 250A rated DB - that should be fine


    250A sustained through a 250A rated board is a different proposition  - it will get hot, and then it depends on the quality of manufacture - sadly, many DB's won't survive full load for extended periods


    Regards


    OMS


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