If you’re after a bitesize guide to bathroom lighting zones and need-to-know regulations, you’ve come to the right place. A bathroom, also known as a wet room, is a designated space where water can be used, splashed and sloshed freely. But, since modern bathrooms also incorporate electric lighting, you must be mindful of your fitting – since water and electricity should never come into contact.
This is the area inside a bath, shower or sink. Fittings in Zone 0, also known as The Zone, require a low voltage lumen, rated IPx7 or above.
This is the area around a bath or shower. It extends up to 2250mm from the floor and has a radius of 1200mm from the water outlet. Fittings in Zone 1 require a minimum rating of IPx4, while lighting inside shower cubicles must be rated IPx5 or more. If a 240v fitting has been used, a 30ma residual current device (RCD) will protect the circuit.
This area lies 600mm outside the perimeter of a bath, shower or washbasin, and extends up to 2250mm from the floor. Fittings in Zone 2 require a minimum rating of IPx4.
Zero protection against any liquid.
Some protection against vertically falling drops of water, i.e. condensation.
Some protection against direct sprays of water, up to 15° from vertical.
Some protection against direct sprays of water, up to 60° from vertical.
Protection against water sprayed from all directions – limited ingress permitted.
Protection against low-pressure jets of water from all directions – limited ingress permitted.
Protection against high-pressure jets of water (for use on a ship deck) – limited ingress permitted.
Protection against the effects of immersion, from 15cm-1m.
Protection against long periods of pressurised immersion.
For more information about bathroom lighting zones, please read the IEE wiring regulations (17th edition) or contact your local, qualified electrician.
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