Were you trying to run 6/2 or 6/3 nm-b(romex type) through 3/4 pipe? First of all, that's not legit, and second it won't fit like that. It's legit if you strip off the insulation, separate the wires and than pull through. And only if the conduit is not running underground.What's up guy I figured it all out , new question tho . So 6 g for 50 amp is to big of a wire!!! For my 3/4 pipe ... So I was thinking what If I only wanted to run 4 600s at 110/120 (have ballast already) could I connect a 30amp and use a 10g .... 10 guage is all I can fit and loop/fish throught the emt