Clear wiring diagram for residential electric meter box, showing connections, safety components, and layout for accurate installation and maintenance. The box on the left cannot be recessed more than ¼ inch. Code Change Summary: Changes were made to provide clarity for flush-mounted box. Article 230 covers the installation requirements for service conductors and service equipment. A service consists of the conductors and equipment connecting the serving electric utility to the premises wiring system. Figure 01 There are many possible combinations of what is considered one. A modern residential overhead service entrance comprises three cables — two hot and one neutral — that run from the utility lines to a point of attachment at the weather head, and then down an entrance cable or conduit to the meter socket. It usually contains the main disconnect. You can find electric panels inside cabinets, behind refrigerators, or inside clothes closets in older homes.
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