Read the route of power
A simplified single-line drawing helps you see electrical supply relationships before looking at detailed wiring.
In 30 seconds
- Start with sources, distribution points and loads.
- Mark the normal route and any alternate supply.
- A simplified teaching drawing omits details needed for real work.
Make it concrete
Draw one source feeding three loads. Add a separate backup path to just one load, then explain what stays available if the main source fails.
- 01Generation
- 02Distribution
- 03Consumers
Check your understanding
Does a teaching single-line diagram show every conductor and terminal?
- Start with sources, distribution points and loads.
- Mark the normal route and any alternate supply.
- A simplified teaching drawing omits details needed for real work.
Go to the source
Sources reviewed: 13.09.2026