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Bathroom: what are the lighting standards to be respected?

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Lighting and electricity have important standards to respect in the house, and especially in the bathroom! Our expert advice to avoid unpleasant surprises ...

In a bathroom, following the lighting instructions exactly is a matter of safety. The electrical regulations divide this piece into four volumes (from 0 to 3). To each corresponds a specific norm. In concrete terms, luminaires are characterized by their class of use (from I to III) and their protection class (the IP code), which can be found on product labels.

Accepted: for volume 0 (the bathtub and the shower tray) which does not allow any electrical appliance, luminaires III + IP 27; for volume 1 (up to 2.25 m high above bath or shower tray), III + IP 24 luminaires; for volume 2 (up to a height of 2.25 m and a distance of 60 cm from the bathtub or shower tray), the II + IP 23 luminaires. For each of these three volumes, the power supply must be be done at very low voltage (less than 12 volts) and the transformer must be installed in volume 3, that is to say in the rest of the bathroom. Finally, for volume 3 itself, ie the rest of the bathroom, luminaires I, II or III + IP 21 are allowed.

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