ISOMETRIC WIRING DIAGRAMS

The isometric wiring diagram is not used very often in electrical work. When used, it shows the electrical relationship in multilevel buildings, between floors, or the total electrical system. In the isometric diagram, the cable and fixtures are shown only in their general location. Their exact locations are given in the electrical prints. (See fig. 4-4.)

Figure 4-5.-Block diagram.

A block diagram is a simple drawing showing the relationship of major parts of a system. Figure 4-5 shows a block diagram of a motor control system. You can easily see why it is called a block diagram. The parts or components in any block diagram will be shown just as they appear in this drawing, as blocks. They are then connected by a line or lines that show the relationship of the parts. The internal connections of the components are not shown in these drawings. The blocks are simply labeled to show what each represents. These drawings would be of little help for troubleshooting.

WIRING DIAGRAMS

The wiring diagram, which is like a picture ^{drawing, shows the wiring between components} and the relative position of the components.

Figure 4-4.-Schematic wiring diagram of side-by-side _{refrigerator with automatic ice maker.}

Figure 4-6 is a wiring diagram of the same motor control system shown by the block diagram. You can see that instead of blocks being used to show components, a picture of the component is used. You can also see that the lines used to show the wiring are marked with numbers or letter-number combinations. Lines L1, L2, and L3 are incoming power leads, and the diagram shows the terminals in the starter to which they are connected,

Wiring diagrams are often used along with a list of repair parts and are helpful in troubleshooting problems.

[ Back ] [ Home ] [ Up ] [ Next ]

Privacy Statement - Press Release - Copyright Information. - Contact Us - Support Integrated Publishing