—Wiring and circuits
Labelling a distribution board
When something goes wrong, the first question is which switch to turn off. A labelled board answers it immediately.
Many boards carry faded, missing or wrong labels, especially after years of alterations. In an urgent situation — a burning smell, water leaking near a socket — guessing which switch to turn off wastes time. Clear labels also make every later job quicker.
Wiring guides explain how circuits are put together and changed, so a quotation or a recommendation is easier to follow.
Labelling involves tracing each circuit, recording what it supplies, and fixing a schedule to or near the board. After any alteration, the schedule should be updated. Good labels describe areas plainly — “ground floor kitchen sockets” rather than “circuit 4”.
01In short
The points that matter most
Saves time in urgent moments
You know exactly which switch to turn off.
Trace every circuit
Labels must match reality.
Keep it updated
Alterations change the schedule.
02Detail
How it is done
Circuit tracing
Switching off circuits and testing points.
Schedule
A written list kept at the board.
Durable labels
Labels that last in warm cupboards.
Several boards
Villas with sub-boards need each board labelled, and the main board should show which way feeds each sub-board.
Spare ways
Recording which ways are spare or unused helps plan any future circuit.
03Checklist
Good labels include
Location
Floor and room.
Type
Lights, sockets, AC, water heater.
Notes
Outdoor circuits or special equipment.
04Questions
Questions people ask
- Can I label the board myself?
- You can note what goes off when switching circuits off; verifying with testing makes the schedule reliable.
- Why are my labels wrong?
- Alterations often change circuits without updating labels.
- Should labels be inside the cover?
- A schedule inside the cover and clear labels on devices help.
- How often should labels be checked?
- Whenever circuits change, and as part of any electrical inspection.
05Related
Related guides
- Single-phase and three-phase suppliesMore on the circuits behind the same problem.
- Wiring for an extension, annex or garden roomMore on the circuits behind the same problem.
- Surface or concealed wiringA related choice for the same kind of work.
- MCB or RCBOA related choice for the same kind of work.
This guide sits under electrical wiring. All topics are on the guides page.
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