Domakihub How to Replace a Light Switch Safely and Correctly
A clear, step-by-step guide for swapping out a faulty or outdated switch in any home, rental, or hotel room.
Reviewed by Domakihub home & decor pros · 2026-06-23 · 5 min read
A flickering, stiff, or cracked light switch is a small problem that can quietly become a safety hazard — especially in a holiday rental or hotel where guests interact with it daily. The video above walks through the physical task in real time; this guide adds the context, Greek electrical conventions, and safety checks you need before you pick up a screwdriver. Whether you are maintaining a city apartment in Athens, a villa in Crete, or an office suite, replacing a standard single-pole switch takes under thirty minutes and no specialist knowledge.
Why light switches fail and when to act
Light switches contain a small spring mechanism that opens and closes a circuit thousands of times over their lifespan. Over time the spring weakens, the plastic housing cracks from heat or UV exposure, or internal contacts corrode — particularly in coastal Greek properties where salt air accelerates oxidation. A switch that sparks visibly, feels warm to the touch, makes a buzzing sound, or simply does not click cleanly anymore should be replaced promptly rather than left for the next guest or tenant to deal with.
Cosmetic replacement is equally valid. Older Greek properties often still have beige rocker switches from the 1990s. Swapping them for modern white or graphite units is a low-cost upgrade that visibly improves how a property presents in listing photos.
What you need to know about Greek wiring
Greek residential wiring follows European standard EN 50088 and uses the same live (brown or red), neutral (blue or black), and earth (green/yellow) color scheme as the rest of the EU. Single-pole switches interrupt only the live wire; the neutral passes through to the fitting. Most flush-mounted boxes in Greece are standard 60 mm Schuko-style back boxes, and replacement switches from brands such as Schneider, Legrand, or ABB fit them directly.
Always confirm the amperage rating of the new switch matches or exceeds the old one. For a standard lighting circuit in Greece this is typically 10 A, which is the most common rating sold at any hardware or electrical supply store (known locally as a katastima ilektrologikou ullikou).
How to replace a light switch: step by step
- 1
Cut the power at the circuit breaker
Go to your distribution board (pinakidio) and switch off the breaker that controls the lighting circuit for the room. If the breakers are not labeled, use a non-contact voltage tester on the switch terminals after removing the faceplate to confirm power is dead before touching any wire. Never rely on just switching the light off at the wall — the breaker must be off.
- 2
Remove the old switch faceplate and unscrew the switch body
Use a flat-head or cross-head screwdriver (most Greek faceplates use cross-head M3 screws) to remove the cover. Once the faceplate is off, you will see the switch body mounted to the back box with two screws — remove these and gently pull the switch forward to expose the wiring. Take a phone photo of the wiring before you touch anything; this is your reference if you need to backtrack.
- 3
Disconnect the wires from the old switch
Note which wire connects to which terminal. A standard single-pole switch has two terminals: the incoming live and the switched live going to the fitting. Loosen the terminal screws and pull each wire free. If the wires are short or brittle, straighten them gently but do not tug. Inspect the insulation for any cracking or scorch marks; if you see either, consult a licensed electrician before proceeding.
- 4
Connect the wires to the new switch
Attach the wires to the matching terminals on the new switch — most modern switches label them with L (line/live in) and L1 (switched live out), or simply show two identical terminals for a non-polarized single-pole switch. Tighten each terminal screw firmly so there is no play in the wire. Strip an extra 8–10 mm of insulation only if the existing stripped length is too short to seat securely in the terminal.
- 5
Fit the new switch and restore power
Push the switch body into the back box, aligning the mounting holes, and tighten the two fixing screws evenly so the unit sits flush. Clip or screw the new faceplate into place. Return to the distribution board, switch the breaker back on, and test the switch. If the light does not respond or the breaker trips immediately, switch off again and recheck that no bare conductors are touching the metal box or each other.
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FAQ
- Do I need an electrician to replace a light switch in Greece?
- Greek law (Presidential Decree 108/2013) does not require a licensed electrician for simple like-for-like switch replacements in private residential properties, provided the work is carried out safely. However, if you are managing a licensed tourist accommodation (hotel, Airbnb with short-term rental registration), local authorities may expect all electrical work to be documented by a qualified technician. When in doubt, a brief visit from a local electrician costs little and provides peace of mind.
- What is the difference between a single-pole and a two-way switch?
- A single-pole switch controls a light from one location only and has two terminals. A two-way switch (dipolo in Greek) allows the same light to be controlled from two points — common in hallways and staircases — and has three terminals (COM, L1, L2). The replacement steps are similar, but you must connect all three wires to the correct terminals; your phone photo taken in step 2 is essential here. Two-way switches are not interchangeable with single-pole switches.
- Can I replace a standard switch with a dimmer or smart switch?
- Yes, with two caveats. First, the light fitting must be dimmable (LED bulbs must carry the 'dimmable' label; most standard LEDs are not). Second, many smart switches require a neutral wire at the switch box, which older Greek wiring omits — only the switched live may be present. Check your back box before purchasing. If a neutral is absent, look for smart switches marketed as 'no neutral' or '2-wire' compatible, or run the replacement past an electrician.