Related illustrations

0555

Bond service box to ground

· p. 94

The illustration shows an open electrical service panel with a main breaker, branch circuit breakers, bus bars, neutral terminals, and a grounding terminal. Service conductors enter at the upper right, and a green conduc

0532

Service entrance (service box, main panel or service panel)

· p. 89

The illustration compares two residential electrical service equipment arrangements. Arrangement A shows a main circuit breaker integrated into the upper portion of a panel containing two columns of branch-circuit breake

0544

Neutral wire shouldn't bypass the service box

· p. 91

The illustration shows an open service box containing a two-pole disconnect and two 60-amp cartridge fuses, with conductors entering above and continuing below to a distribution panel. Red and black conductors connect th

0531

Determining service size by the main disconnect

· p. 89

The illustration shows two ways to determine electrical service size by checking the amperage rating of the main disconnect. On the left, a combination panel contains a main breaker above two columns of branch-circuit br

0574

Neutral and ground separated in subpanels

· p. 97

The illustration shows an electrical subpanel with its cover removed, exposing circuit breakers, bus bars, neutral terminals, and grounding terminals. Red and black feeder conductors from the main panel supply the bus ba

0557

Typical arrangement of panel wires in fuse box

· p. 94

The illustration shows the internal wire arrangement of a fuse-type electrical distribution panel supplied from a service box. Two hot supply conductors feed the panel, with an inset identifying the red, black, and neutr

0575

Neutral and ground separated in subpanels

· p. 97

The illustration shows an electrical subpanel with its cover removed, exposing circuit breakers, bus bars, neutral bars, and grounding terminals. Feeder conductors enter from the main panel, with the green ground wire bo

0556

Neutral and ground separated in subpanels

· p. 94

The illustration shows an open subpanel supplied by red and black hot conductors, a white neutral conductor, and a green grounding conductor from the main panel. Circuit breakers connect to the interior bus bars, with ne