Brushing up on old knowledge.

[Dave Rudderham]

I'm completing my final but one L3 assignment for my college course. I'm just trying to remember the theory stuff I've forgotten from the late 1990s when I was last at college.
In order to find Fault current for a 3 phase install, I seem to recall it was single phase voltage (Uo) over Zs then multiply by 2.

Am I right? Or have I mixed it up with something else.

Thanks

 

[telectrix]

it's actually x 1.732 (root 3) but x 2 is taken as a ball park figure.

 

[Dave Rudderham]

it's actually x 1.732 (root 3) but x 2 is taken as a ball park figure.

Thanks, I'm trying to get my rusty head round the adiabatic equation again lol. Gone through two cans of WD40 already.