Electrical shop drawings are a detailed documentation of the electrical systems in a building. The drawings provide a blueprint for the electrical contractor to follow when installing the electrical systems. The drawings include schematic diagrams of the electrical systems, as well as wiring diagrams and other details. The electrical contractor uses the shop drawings to price the electrical work and to order the necessary materials. The contractor also uses the drawings to ensure that the electrical systems are installed correctly and safely. It is important to have accurate and complete electrical shop drawings for a building. The drawings help to ensure that the electrical systems are installed correctly and that the building is safe.