i have completed all the basic electrical drawings- electrical drawing plans and also passed the assessment exam but, the topics are still red not green. Can someone please verify the problem with this course.
Hello website admin, i keep getting this message in this topic :"ERROR: Could not load the file 'story_content/data.swf' ". Can you please be kind and fix it, i can not pass the course without completing all topics. Thanks
Electrical Drawings and Plans
A. Scale Drawings:
Electrical drawing components are so large that it would be impossible to draw them actual size. For this reason, drawings are made to some reduced scale; i.e., all the distances are drawn smaller than the actual dimensions of the object itself, with all dimensions being reduced in the same proportion.
Electrical Drawings and Plans
Example of a Scale Drawing
B. Power Plans:
The electrical power plan shows the complete floor plan of the building with all interior partitions drawn to scale. Sometimes, the physical locations of all the wiring and outlets -- outlets for lighting, power, signal and communications, special electrical systems and related equipment -- are shown on the same plan.
A power plan includes the following:
1. Key plan
2. Symbol list
3. Floor plan
4. Branch circuit layout for power
C. Lighting Floor Plans:
A lighting floor plan shows the outlet symbols found on the drawing for the building, representing both incandescent and fluorescent types.
A circle on most electrical drawings represents an incandescent fixture, and a rectangle represents a fluorescent one.
D. Electrical Details and Diagrams:
Electrical diagrams are drawings that are intended to show electrical components and their related connections.
They show the electrical association of the different components, but are rarely drawn to scale.
E. Written Specifications:
The written specifications for a building or project are the written descriptions of work and duties required of the owner, the architect, and the consulting engineer.
Along with the working drawings, these specifications form the basis of the contract requirements for the construction of the building.
F. Architectural Drawings:
Working drawings consist of plans, elevations, details, and other information necessary for the construction of a building.
An architectural drawing usually includes:
1. A site (plot) plan indicating the location of the building on the property.
2. Floor plans showing the walls and partitions for each floor or level.
3. Elevations of all the exterior faces of the building.
4. Several vertical cross sections to indicate clearly the various floor levels and details of the footings, foundations, walls, floors, ceilings, and roof construction.
5. Large-scale detail drawings showing such construction details as may be required.
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