Domakihub How to Wire an Outdoor Floodlight Safely
What every homeowner should know before the electrician arrives — and how to prepare the job right.
Reviewed by Domakihub home & decor pros · 2026-06-23 · 5 min read
Outdoor floodlights are one of the most practical upgrades you can make to a home, villa, or rental property in Greece — they deter intruders, guide guests safely after dark, and extend usable outdoor time on terraces and driveways. The video above walks through the physical installation clearly; this guide adds the planning context, the legal framework in Greece, and the step-by-step sequence so you arrive at the job fully prepared. Because this work involves tapping into mains wiring, Greek law (Presidential Decree 108/2013) requires the final connection to be made or signed off by a licensed electrician (ilektrologos).
Why outdoor electrical work needs a licensed electrician in Greece
In Greece, any new connection to a property's main electrical installation — including running a new circuit or tapping into an existing outdoor circuit for a floodlight — must be carried out or supervised by a licensed electrician holding a valid professional licence (adeia askolisis). The electrician issues a Responsible Electrical Declaration (Ypeuthini Dilosi Ilektrologou), which is required by DEDDIE (the distribution network operator) and for your home insurance to remain valid.
This does not mean you cannot prepare the job yourself. Choosing the fixture, positioning the mounting bracket, routing conduit through walls, and confirming the switching arrangement are all tasks a prepared homeowner can handle before the licensed professional arrives — saving both time and labour cost.
Choosing the right floodlight for the Greek climate
Greece's combination of intense summer sun, salt air near the coast, and occasional heavy winter rain means outdoor fittings need a minimum IP65 rating (dust-tight and jet-water resistant). For areas within 200 m of the sea, look for marine-grade or powder-coated aluminium housings rather than cheap painted steel, which rusts within one season.
LED floodlights in the 20–50 W range are the practical choice for driveways and terraces: they draw a fraction of the power of older halogen units, handle the heat well, and most include a built-in PIR (passive infrared) motion sensor. Colour temperature of 4000 K (neutral white) gives the best visibility without the harsh blue cast of 6500 K fixtures.
How to wire an outdoor floodlight: the full sequence
- 1
Kill the power and confirm it is dead
Switch off the relevant circuit breaker in your distribution board (pinakas) and lock or tape it off. Use a non-contact voltage tester on every conductor at the point where the new cable will be connected — never rely on the breaker label alone. In older Greek properties the labelling is often incomplete or wrong. Only proceed once the tester confirms zero voltage.
- 2
Plan the cable route and select the right cable
Trace the shortest watertight route from the power source (an existing outdoor socket, an outdoor junction box, or a spur from an indoor circuit) to the mounting position. For runs inside the wall use 1.5 mm2 NYM-J (3-core: live, neutral, earth) in a grey PVC conduit. For exposed runs outside the wall use a minimum H07RN-F rubber-sheathed cable, which tolerates UV and mechanical contact. Avoid burying unprotected cable in render — route through dedicated conduit so the cable can be replaced without drilling.
- 3
Mount the back box or bracket and route the cable
Drill the wall plate and fit the weatherproof back box (rated IP65 or better) so its entry gland faces downward or sideways — never upward, where water pools. Feed the cable through the gland and tighten it finger-tight so the rubber seal grips the outer sheath. Leave 150 mm of cable protruding for connection. Apply silicone sealant around the conduit entry point where it penetrates the wall.
- 4
Make the connections (or hand over to your electrician)
Strip 8 mm of insulation from each conductor. Connect brown (live) to the L terminal, blue (neutral) to N, and the bare copper or green/yellow earth to the earth terminal or screw. If the fixture has a PIR sensor it will have a red switched-live wire in addition — consult the wiring diagram on the fixture. Tighten all terminals to the torque specified in the fixture manual (typically 0.5–0.8 Nm for 1.5 mm2 terminals). In Greece, the final live connection at the circuit source must be made by your licensed electrician, who will also confirm correct RCD (RCCB) protection on the circuit.
- 5
Test, seal, and adjust the PIR sensor
Once your electrician restores power, test the fixture with the motion sensor temporarily set to maximum sensitivity. Walk through the detection zone to confirm full coverage. Then set the lux threshold (the small LUX dial) so the light only activates in darkness rather than triggering at dusk. Apply a second bead of UV-stable silicone between the fixture body and the wall surface to block capillary water ingress. Write the circuit details on a sticky label inside the distribution board.
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FAQ
- Can I wire an outdoor floodlight myself in Greece without an electrician?
- You can prepare everything — mount the bracket, route and terminate the cable at the fixture end, and select the right components — but connecting the new wiring to your property's mains supply legally requires a licensed Greek electrician (ilektrologos). They must issue a signed Responsible Electrical Declaration (Ypeuthini Dilosi) for the work. Skipping this step can void your home insurance and create liability if a fault causes fire or injury.
- What IP rating does an outdoor floodlight need in Greece?
- A minimum of IP65 for any fixture mounted outdoors, including covered patios and car ports where splash water can reach. IP65 means the fitting is fully dust-tight and withstands water jets from any direction. For coastal locations within 200 m of the sea, prioritise fittings with an aluminium or stainless-steel housing rather than painted iron, as salt air corrodes cheaper metals within one or two winters.
- My rental villa already has an outdoor socket near where I want the floodlight — can I just plug it in?
- A plug-in floodlight is a practical temporary solution and requires no licensed installation. However, a permanently wired flush-mounted fixture looks far more professional for guests, cannot be accidentally unplugged or stolen, and carries no trailing cable hazard around a pool or terrace. If you do use a plug-in unit, confirm the outdoor socket is GFCI/RCD protected — in Greece this is mandatory for all socket outlets in wet or outdoor locations under ELOT HD 384.