For the 2005 Code, only editorial changes were made to 310.15(B)(6). If a single set of 3-wire, single-phase, service entrance conductors in raceway or cable supplies a onefamily, two-family, or multifamily dwelling, the reduced conductor size permitted by 310.15(B)(6) is applicable to the service-entrance conductors, service-lateral conductors, or any feeder conductors that supply the main power feeder to a dwelling unit.
Section 310.15(B)(6) permits the main feeder to a dwelling unit to be sized according to the conductor sizes in Table 310.15(B)(6) even if other loads, such as ac units and pool Exhibit 310.8 Another application of 310.15(B)(6). loads, are fed from the same service. The feeder conductors to a dwelling unit are not required to be larger than its service-entrance conductors.