Steckdose installieren
Eine Standard-230V-Steckdose an einer vorbereiteten Unterputzdose anschließen und befestigen.
Goal: Eine Steckdose korrekt verdrahten, sodass sie sicher mit der richtigen Polarität funktioniert.
Minimum practice time: 2 hours
Materials needed
- • Socket outlet faceplate
- • Back box (metal or plastic)
- • Cable (2.5 mm² twin and earth)
- • Cable detector
- • Screwdrivers
- • Wire strippers
- • Socket tester
- • Level
Safety first
- ! Carry out full safe isolation before any wiring work
- ! Use a cable detector before drilling or chasing any wall
- ! Check the socket has correct polarity before use with a socket tester
Steps9 total
- 1
Confirm safe isolation
Carry out the full safe isolation procedure before starting any wiring work.
Done when:The circuit is confirmed dead with a voltage indicator.
Why:Working on a live circuit risks electrocution.
- 2
Mark and prepare the wall
Mark the position of the socket on the wall. Mark the back box size with a pencil. Check for hidden pipes and cables with a cable detector.
Done when:The position is marked and confirmed free of hidden services.
Why:Drilling into hidden cables or pipes causes serious damage and injury.
- 3
Fix the back box
Cut or chase the wall recess. Fix the back box with screws and plugs. Check it is level.
Done when:The back box is secure, level and flush with the wall.
Why:A level and secure back box ensures the faceplate fits correctly.
- 4
Prepare the cable ends
Strip the outer sheath back 50 mm. Strip 10 mm of insulation from each conductor. Fit a green/yellow sleeve to the bare earth wire.
Done when:Each conductor is correctly stripped and the earth has a green/yellow sleeve.
Why:Correct stripping lengths ensure good connections and prevent shorts.
- 5
Connect the brown wire to L
Insert the brown (live) conductor into the L terminal on the socket. Tighten the terminal screw firmly.
Done when:The brown wire is secure in the L terminal with no bare copper visible outside the terminal.
Why:A loose live connection causes overheating and fire risk.
- 6
Connect the blue wire to N
Insert the blue (neutral) conductor into the N terminal. Tighten the terminal screw firmly.
Done when:The blue wire is secure in the N terminal.
Why:A loose neutral connection causes the socket to malfunction.
- 7
Connect the earth wire to E
Insert the green/yellow earth conductor into the E terminal. Tighten the terminal screw firmly.
Done when:The earth wire is secure in the E terminal.
Why:A secure earth connection is essential for safety if a fault occurs.
- 8
Fit the faceplate
Fold the cables neatly into the back box. Offer up the faceplate. Tighten the fixing screws evenly. Check the faceplate is flat against the wall.
Done when:The faceplate is secure, flat and level.
Why:A loose faceplate is a safety hazard and looks unprofessional.
- 9
Test for correct polarity and function
Restore power. Use a socket tester to check correct polarity. Check the socket works with a known appliance.
Done when:The socket tester shows correct wiring. The socket powers an appliance correctly.
Why:A polarity test confirms the wiring is correct and safe to use.
Common mistakes to avoid
- × Reversing live and neutral connections
- × Leaving too much bare copper conductor exposed outside the terminal
- × Not fitting an earth sleeve on the bare earth wire
- × Not checking for correct polarity with a socket tester after fitting
Supervisor checklist
Confirm each item is completed before signing off.
- Safe isolation confirmed before starting
- Cable checked with detector before drilling
- Back box is level and secure
- All conductors correctly connected to L, N and E
- No bare copper outside terminal
- Faceplate is flat and secure
- Polarity confirmed correct with socket tester
Evidence required
- • Photo of correct wiring before fitting faceplate
- • Socket tester result showing correct polarity
- • Supervisor sign-off on completed installation
Track this work card with a learner
Tick off steps, add evidence and register hours in Bloeiindex.