How To Read Electrical Blueprints

The title blocks first section lists the blueprints name number as well as the location site or vendor1 if the drawing is part of a series this information will also be listed. With rare exceptions schematics should be read left to right and top to bottom. Construction plans blueprints are scaled down representations of the final project at a ratio of the actual size.

how to read electrical blueprints

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How to read electrical blueprints.

How to read electrical blueprints.

Step 1 read the title block.
This section is largely step 2 read the revision block.
Step 1 read schematics in the pattern that you would read text.
The signal being generated or used by the circuit will flow in this direction.

There will be a variety of schematic symbols on the schematic that represent real world devices and wires.
For example 18 1 one eighth inch equals one foot.
Review the symbol legend.
Resistors act to impede the flow of the circuit to an extent determined by the resistance value used.

A zigzag shape stands for a resistor.
Electrical plans can include electrical outlets telephones communication devices and other items requiring electrical power.
They are used to scale and shape the signal.
When reading plans and blueprints the most common architectural plan view scales are 1 and 1.

Learn that capacitors are represented by two parallel lines.
When construction plans are scaled it helps to put the part into a print size drawing that is easily read by the crew.
Familiarize with the standardized electrical symbols.
The user can follow the same path that the signal uses to understand what the signal does or how it is being modified1step 2 understand the electronic language.

Electrical components are represented by various symbols and the symbol legend tells what each one means.
By reviewing these plans first you can get an idea of the layout and intent of the space which will help you understand the electrical drawings.
The specialized rulers used to work with building plans are also called scales and are either engineering scales or architectural scales.
If you are involved in any serious construction work you will want to make sure to read it all thoroughly.

In small projects these items can be shown together with the lighting.
An example of this type of drawing is illustrated in figure 14 18.
Any time changes to a buildingsystemcomponent are made.
These often appear at the beginning of any blueprints.