2365 203 #3 - Electrical Install Drawings

What is the purpose of a block diagram?

• To show all wiring and terminations in detail

• To display simplified system structure using blocks

• To calculate volt drop

• To show cable ratings

Which type of drawing shows the physical routing of cables and accessories?

• Wiring diagram

• Block diagram

• Schematic diagram

• Site plan

What does a schematic diagram show?

• The physical locations of accessories

• A symbolic representation of how components are connected

• 3D models of circuits

• The customer’s design notes

What type of drawing would be used to plan conduit runs in a real building layout?

• Schematic

• Wiring

• Block

• Legend sheet

Why are different types of diagrams used in electrical installation?

• To fill paperwork

• Because clients request them

• To communicate specific information clearly at different project stages

• Because BS7671 requires it

What does a circuit diagram typically include?

• Installation routes

• Electrical symbols showing how a circuit operates

• Scaffold drawings

• Energy-saving info

Which drawing gives a general overview of a system’s components?

• Block diagram

• Wiring diagram

• Circuit diagram

• Specification sheet

Why is interpreting diagrams correctly important?

• It saves paper

• It ensures safe and correct installation

• It impresses the client

• It prevents scratches on trunking

What drawing shows the layout of cables in walls or ceilings?

• Schematic

• Wiring diagram

• Block diagram

• Product sheet

Which diagram would an electrician use to understand how switches and lights are interconnected logically?

• Schematic diagram

• Block diagram

• Route layout

• Symbols list