What types and sizes of circuits are generally required in a residence?
Wire sizes given are for copper conductors only. Aluminum conductors smaller than #4 are prohibited by ordinance. Non-metallic sheathed cable may be used in dwellings. The kitchen counter top area must have receptacle outlets supplied by at least two 20 ampere circuits (12 gauge wire). The receptacle outlets in the dining area must also be fed from a 20 ampere circuit which may extend from the kitchen circuits. The circuits listed in this paragraph shall supply no other receptacle outlets, and no lights. For further information, see National Electrical Code 02 ed. Sections 210.11(c)1, 210.52(b), & 220.16(a), and (c)1. If a dishwasher is to be installed, a separate circuit of proper amperage shall be provided for it. If a garbage grinder or compactor or both are to be installed, a separate circuit suitable for the load must be installed for them. See NEC Section 210.23 and 220.3(b)(1). A circuit suitable for the load (40 amperes) is required for a range of 8 3/4 kW or more, either free
