This includes where special power sources are needed, how air handling units and HVAC equipment will be powered, how fire alarms and smoke detectors will receive power and so much more required for a complete, safe and comfortable dwelling. Designed by electrical engineers or pro electrical companies, these plans reveal everything from how the main source of power should enter the building, to the path wires should take throughout the structure, to the location of each and every light fixture, outlet, switch and piece of equipment.Įlectrical plans also reveal how electrical components will interact with other systems in the home. Of course, these plans won't do you much good if you don't know how to read them. While a good contractor might be able to puzzle out things like walls and floors, it's impossible to install a complete electrical system without a well-prepared set of plans. We have about ( files) royalty free vectors in ai, eps, cdr, svg vector illustration graphic art design format. ![]() It should be emphasized that drawings need to be supplemented with specifications in order to establish the details of the electrical systems. Note: Explanations for common household electrical items such as three-way switches and switched duplex plug outlets are below the figure. There are five commonly used symbols in Electrical Switch, Wire, Contactor, Motor, Transformer. 2 Symbols are a shorthand way of showing the loca- tions, types, and sizes or ratings of electrical wiring and equipment, and the interrelationships between these items. Trying to build a house without blueprints is like trying to build a giant puzzle without looking at the picture as a guide. The most commonly used electrical blueprint symbols including plug outlets, switches, lights and other special symbols such as door bells and smoke detectors are shown in the figure below.
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