Most of the electrical symbols used on blueprints have become standard some architects or designers may use slightly different symbols always check with the key on your blueprints a few points of explanation youll notice that some of the symbols have a subscript that small writing at the bottom of the symbol that helps explain what the outlet is for you might some across a symbol . Construction drawings in this publication the term electrical is used to include electrical electronic and communications systems covered by the national electrical code nfpa 70 this publication also summarizes recommended drawing practices for electrical construction drawings 11 symbols included. Basic electrical symbols contain earth electrode cell battery resistor etc whether you are a novice or a professional engineer these basic symbols can help create accurate electrical and circuit diagrams in minutes you can depict a complex electrical circuit with the standard and simplified electrical symbols. Summary identification of outlet symbols used in electrical construction for understanding blueprints and electrical drawings outlet symbols for home electrical wiring this list of outlet symbols will help you to identify these devices on the electrical blueprint or wiring diagram layout when performing any electrical wiring for any of these outlets devices you will be able to identify