D domnic Senior Member Occupation Electrical Contractor Aug 17, 2013 #1 What code reference states i can use #4 cu for a 100 amp service ? ( in a dwelling )
infinity Moderator Staff member Location New Jersey Occupation Journeyman Electrician Aug 17, 2013 #2 It's moved around a bit, in the 2011 it's in Table 310.15(B)(7).