can anyone explain the hazards of running a 4wire subfeed 120/240 AND puting in ground rods. Other than the fact that you shouldn't i'd like to brush up on the theory behind it.

I have worked as an apprentice and on to a journeyman in a general construction company. 90% of what I do is residential. I have an associats degree in electrical technology. I have started my own buisness this year and am with out the help of other electricians. this is why i find this site so helpful.