I am refering to the 1996 NEC Handbook, on page 255 article 318-11 the book has a diagram 318-3 shows a one cable distance between each cable. I cannot find a code reference that says you shall maintain one cable width between each cable. What I have is MC cable with 4 5ookcmil conductors. Is there a mandatory spacing requirement, and if so what is the code reference. Thanks Joe