Electrical drawings

Question 1

Control circuit diagram

Answer 1

A control circuit diagram (also known as a schematic diagram) shows the complete
operational sequence of a circuit.

Question 2

schematic diagram

Answer 2

shows the complete
operational sequence of a circuit.

Question 3

Single line and power system circuit

Answer 3

Single-line (or power system) diagrams use single lines to represent cables and circuits to make the overall layout of complicated installations simple and easy to read. Single line diagrams are used extensively in the electrical supply industry and switchboard
manufacturing industry.

Question 4

Wiring diagrams

Answer 4

Wiring diagrams, also known as connection diagrams, are “point-to-point” diagrams showing
details of the complete wiring layout.

Question 5

Location diagram/plans

Answer 5

A location diagram shows the position of electrical equipment such as motors, switchboards,
power outlets, telephone/data points and lighting, on an architectural plan of a building.

Question 6

Block diagrams

Answer 6

drawn in simple block form to describe the general principles of operation
of an electrical installation.

Question 7

Layout diagram/plans

Answer 7

A layout diagram shows the positions the components are to be mounted. Generally little or no wiring information is included in a layout drawing

Question 8

Site plan

Answer 8

The diagram below shows an example of a site plan with the positions of the main
switchboard and distribution switchboards shown. The approximate route for cables is
shown on the plan using a line with the required designation.