Available fault current

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ggunn

PE (Electrical), NABCEP certified
Location
Austin, TX, USA
Occupation
Consulting Electrical Engineer - Photovoltaic Systems
I need to understand how available fault current (AFC) is determined for different points in an electrical system. I found several YouTube videos that talk about it, and they show how to calculate the AFC at the transformer (I know how to do that), but when they get to the part where they talk about AFC at other points, every one of them has said something like "you could do this calculation yourself but it's easier to just use this on line app". Yeah, OK, but I want to understand what is going on behind the curtain. I want to understand the calculation, not just punch numbers into a calculator and blindly accept what it gives me for an answer. Can anyone point me to a tutorial that actually runs the calculations?

Yes, I am an engineer. :D
 
I would try to find pdf of MVA method of fault analysis by Lee Meng. For some folks, the MVA method makes perfect sense and allows you to solve at various places similar to circuit analysis.
 
dkarst said:
I would try to find pdf of MVA method of fault analysis by Lee Meng. For some folks, the MVA method makes perfect sense and allows you to solve at various places similar to circuit analysis.
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Found it; thanks.
 
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