I need you help.
I am designing a system where I want to use a cable tray outdoor. I would like to drop my cable ( 2500A ) on top of an outdoor bussed section.
Do you know any vendor of watertight seal I can use to drop my cables to an outdoor switchboard? I have been asking assistance from...
I am new to the forum but I have learned quite a lot by just reading through different threads. I need your input on the intent of 517.30(B)(4) on this scenario.
If I have an essential load consisting of 50KVA Life Safety branch, 100KVA critical circuit branch, and 150KVA non delay equipment...
Can anyone pls tell me how the following formula for assymetric current (rms) and (peak)from a power system manual has been obtained.
I asym (RMS) = I"k * sqroot (1+2e^[-4(3.14)(R/X)C]
I asym (peak) = I"k * sqroot(2) * (1+e^[-2(3.14)(R/X)C]
where C = cycle
I"k - initial symmetrical fault...
