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Elektrotechnik von A - Z

Correctly connecting electrical outlets

Guide to Installing and Connecting an Electrical Outlet


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Please observe all safety regulations throughout the entire process:

Step 1: Preparation
Make sure the circuit you're working on is turned off. Verify this by switching off the corresponding circuit breaker or removing the fuse.
Use appropriate protective equipment, such as gloves and safety goggles, to avoid injuries.
Check the tools you'll need to perform the task, typically including a screwdriver, voltage tester, utility knife, and wire cutters.

Step 2: Removing the old outlet (if applicable)
Remove the cover plate of the existing outlet by loosening the screws at the corners.
Unscrew the screws holding the outlet to the wall.
Carefully pull the outlet out of the wall and disconnect the terminal screws to expose the wires.

Step 3: Preparing the wiring
Check the condition of the existing wires. If they are damaged or worn out, they need to be replaced.
Gently strip about 1.5 cm of insulation from the ends of the wires to expose the copper wires.
Verify the wire gauge and ensure it meets the requirements. Typically, the wire gauge for outlets is 1.5 mm² or 2.5 mm².

Step 4: Connecting the new outlet
Examine the new outlet and identify the terminals: L (Phase), N (Neutral), and PE (Protective Earth).
Connect the wire labeled L (Phase) to the corresponding terminal on the outlet. This is usually done using a screw terminal. Tighten the screw to establish a secure contact.

Connect the wire labeled N (Neutral) to the corresponding terminal on the outlet.
Connect the wire labeled PE (Protective Earth) to the corresponding terminal on the outlet. This wire is typically green-yellow striped.
Ensure that all connections are tight and secure by pulling on the wires.

Step 5: Mounting the outlet
Position the outlet on the wall and carefully insert the wires into the designated openings at the back of the outlet.
Secure the outlet to the wall by tightening the screws at the corners.
Reattach the cover plate and tighten the screws.

Step 6: Finishing touches
Turn the circuit back on by switching on the fuse or resetting the corresponding switch position on the circuit breaker.
Use a voltage tester to verify that the outlet is properly connected and carrying voltage.
Test the outlet by connecting an electrical device and checking if it works.


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Left (N)           Middle (PE)           Right (L)


Please note that this is a general guide. The specific steps may vary depending on local regulations and electrical standards. It is strongly recommended to consult a qualified electrician if you are unsure or have no experience with electrical installations. Your safety is of the utmost importance.


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