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—Checks and maintenance

Electrical checks after a renovation

After building work, the electrics should be checked before the walls and ceilings close — and the records kept.

Renovation work often adds or changes circuits, and the best time to check the electrics is before the walls and ceilings are finished, while any problem is still reachable. Once the plaster and paint go on, a fault behind them is far more expensive to find and fix.

Maintenance guides describe the checks that find problems while they are still small.

The check is partly visual and partly about records. New circuits should be documented, the board labels updated to match what was actually done, and any paperwork from the work kept. That way the finished room starts with its electrics in a known state.

01In short

The points that matter most

  • Before the walls close

    Faults are far cheaper to fix while the cables are still reachable.

  • Update the board labels

    The labels should match what was actually built, not what was there before.

  • Keep the records

    Drawings, test results and changes are the history the next visit starts from.

02Detail

What the check covers

  • New circuits

    That new circuits are correct, protected and documented.

  • The board

    That the labels and the protection match the finished installation.

  • The records

    Drawings, test results and a note of every change, kept together.

03Checklist

Before the room is finished

  • Walk the new work

    Look over the new sockets, switches and fittings before they are covered.

  • Check the board

    Whether the labels and protection match the work that was done.

  • Collect the paperwork

    Any drawings, test results and changes from the renovation.

—In practice

Putting it into practice

Check the new work before the walls and ceilings close, while any fault is still reachable. Update the board labels to match what was actually built, and keep drawings, test results and a note of every change. That way the finished room starts with its electrics in a known state.

Common mistakes

Checking after decorating
Once the room is closed and decorated, a fault behind the wall costs far more to find. Check before the walls close.
Leaving the labels as they were
Labels that do not match the finished installation send the next person to the wrong circuit.

04Questions

Questions people ask

When should the electrics be checked after a renovation?
Before the walls and ceilings are finished, while any fault is still reachable. Once the room is closed and decorated, a hidden fault costs far more to find.
What records should I keep?
Drawings showing where cables run, any test results, and a note of what was changed. They are the history the next visit and the next owner start from.
Why do the board labels matter?
Labels that do not match the finished installation send the next person to the wrong circuit. Updating them is part of finishing the work properly.

05Related

Related guides

This guide sits under maintenance. All topics are on the guides page.

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Finishing a renovation?

Tell us what was changed. We will check the new work before the walls close and update the records.

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